Strange Maritime Phenomenon and Anomalies

In this video we discuss the often strange phenomenon and anomalies that happen at sea. Unfortunately I don't have a lot of video to show you, so we have to conceptionally describe how and why these things happen.

[@forrestharrell6710]

Interesting, I am a scuba diver, in Charleston SC I was diving the Cooper River, a working river. The dive master gave me a hammer and steel rebar told me if I hear a large ship coming up or down the channel to conserve air, get on bottom,drive rebar into river bottom and tie myself down. Well guess what a large barge came. I was in around 20ft maybe less of water. I felt the suction. I always thought it was the propellers but The suction well before, I think now it wAs the Venturi effect on the bottom. Also it was black water so no visibility. Thanks for video, always wander what happened, it did scare me, have not dive the Cooper since.

[@TimBatSea]

Wow! Now that is a great story!! Thank you for watching Forrest and thank you for sharing that with us. Please consider subscribing as I try to post new content every Tuesday. PS It may have been me. I ran scrap up the Cooper River to Nucor steal for years back in the day. CUOTO

[@bostonpaul7065]

We made firehouse chili on my barge a few years ago. 4 hours later I set off the carbon monoxide alarm in the office. I was sleeping in the bunkroom at the time. I'm not sure if I'm more proud or ashamed.

[@douglasscott3541]

Take pride mate! And i would love to read the Risk Assessment and safe work method paper work for that one!

[@TimBatSea]

LOL! You are my hero Paul!!!

[@TimBatSea]

@Big AL 🤣🤣🤣🤣🤣

[@mustangcircut]

Paul you set off 🚨 that's a good thing🤣

[@rickowens4397]

Hmmmm... sure that wasn't the "Bullsh't Alarm" that went off!? 😉 '

[@pwillieb]

There is so much more to maritime work than I ever realized. I always learn something on your channel!

[@TimBatSea]

That is so great! Thank you for watching and for making my morning! I love this line of work and love sharing what I know with others. It makes me feel validated when I get a comment like yours. I am always in a constant state of worry that at any moment, my employer could shut down my ability to shoot most of the content that people seem to like. But if that day comes, it will be comments like yours that give me a leg to argue my case. Thank you again!

[@nickt778]

Something I learned while inspecting vessels in New Haven, USCG Captain of the Port. Certain types of manure used to be transported (as everything was back then) by ship … well in dry form it weighs a lot less, but once water (at sea) hit it, it not only became heavier, but the process of fermentation began again, and one of the by products is methane gas . . . and as the stuff was stored below decks in bundles you can see what could (and did) happen, methane began to build up below decks and the first time someone came below at night with a lantern . . . BOOOOM! Several ships were destroyed in this manner before it was discovered what was happening. After that the bundles of manure where always stamped with the term S.H.I.T on them which meant to the sailors to “Ship High In Transit”. In other words high enough off the lower decks so that any water that came into the hold would not touch this volatile cargo and start the production of methane.

[@TimBatSea]

Wow. Very cool. I had heard a story line that before but didn't put much stock in it. But now, coming from you, this changes "shit"!! Cheers

[@TimBatSea]

Wow. Very cool. I had heard a story line that before but didn't put much stock in it. But now, coming from you, this changes "shit"!! Cheers

[@kapplerphoto]

Another great one! For the ballasting issue - RoRo Cougar Ace was reballasting to flush tanks while approaching US NW coast in 2006. Something got screwed up and she ended up with a 60 degree list and couldn't recover. Another fun fact, the ocean eats a car carrier about every two years or so.

[@TimBatSea]

Thank you for watching David. LOL You always have the best "Fun Facts"

[@dickdaley9059]

We have the Golden Ray laying on the bottom port side down in Brunswick, GA since last Sept. It lost stability coming out of port with 4200 vehicles aboard and a harbor pilot in command. He decided to beach the vessel to get it out of the channel when the port list was beyond recovery. The public is trying to understand how this could happen. Maybe it was a reballasting failure as you described...?

[@TimBatSea]

@@dickdaley9059 I do not know. I am aware of the incident and I have friends who are involved with the removal (although recently halted due to covid), but never looked into the cause.

[@bubbafisher8783]

A phenomenon I hear about in the navy is when you come home from a 9 month underway and your wife/girlfriend is 3 months pregnant. It’s crazy

[@TimBatSea]

LOL!!!!! Best comment ever!!! (I wish I didn't understand, but unfortunately I've kind of been there) Thank you for watching and please consider subscribing. I try to post new content every every Tuesday. #CUOTO

[@wolfkremen]

There are new policies in place that would tell you that's a case of parthenogenesis. :-)

[@onrr1726]

Or 100 men go down in a sub and 50 couples come back.

[@TimBatSea]

@@onrr1726 lol

[@sethbarnes7608]

​@@onrr1726😂 just cause you've had 50 guys on your poop deck doesn't mean you were in the Navy! 😂😂

[@TimCummings-hf4ee]

Great video, Tim. Wood...I recall hearing how some of the first divers on USS Arizona would come up into compartments with air pockets and would remove their breathing apparatus only to die. The paper remaining in the dry part of the compartment robbed the O2.

[@TimBatSea]

Thank you for watching and welcome to the channel Tim. I know rust will do that, but didn't know about paper. CUOTO

[@LeeB48]

Great topics. On the waterway I used to work at we would refer to channel suction as "bank" suction. There was always the chance if you were not near the center of the channel in the more narrow spots the vessel could be drawn into the bank if you had a little too much way on. A good friend of mine who was a pilot, would love to do a little showboating and maneuver through a rather tight turn to port by using starboard rudder. What he would do his hug the starboard side of the channel going into the turn at around 10 knots, as the vessel entered the turn he would wait for the bank suction to start to pull the stern towards the bank. As the stern moved towards the bank he would check it with starboard rudder, just using enough starboard rudder to allow the bow to swing to the port, thereby making the turn to port using starboard rudder. He would always make sure that the quartermaster understood his order very clearly before he attempted the turn. All the while really enjoying the stir it would create with some of the bridge staff.

[@TimBatSea]

Thank you for watching Lee. That sounds crazy, but totally believable. As the airline pilots on here say, "there are bold pilots and old pilots. But there are no bold old pilots". Lol

[@LeeB48]

@@TimBatSea LOL, he retired... I guess before he got too old

[@debbieknowlton9794]

Fascinating phenomena, Tim! I've known about the science, but had never really thought about how boats/ships might be uniquely affected, except, as a sailor, I knew about St Elmo's Fire. You asked about other experiences - A similar phenomenon I've experienced on land is ball lightning. It , too, is a form of lightning caused by heavily ionized air, but usually during a bad thunderstorm. My family was in a lakeside cottage years ago, and the storm was bad enough that I could feel the electricity on my scalp & in my hair. The telephone kept "dinging", and crackling, blue electric streamers were coming off wall switches (until they melted). Our electric oven door blew open at one point, when suddenly a 3-foot ball of electricity came out of the fireplace into the main room to add to the scary experience. It appeared almost alive, the air currents moving it a short distance into the room. It looked like a miniature 4th of July firework piece with tiny bits lighting up and going out. I don't remember how it left, but I think it just fizzled out. Most of what I remember are snatches of pictures, sounds, and emotions from that thoroughly unnerving evening's experience many years ago.

[@TimBatSea]

Thank you for watching Debbie. WOW what an amazing story! Thank God you made it through unscathed! CUOTO

[@randyflood8209]

This "Captain Flood" you speak of at the beginning of the video sounds like an Extremely Skilled Ship Handler. And from your story, you can tell he must be a very good looking man as well!!!!

[@TimBatSea]

LOL Very true Cap! Thank you for watching! And Thank you for schooling me back in the beginning. See you on the one.

[@larsvihlen2185]

@timbatsea as a airline pilot we regularly encounter saint elmos fire probably once a month or so. It will light up our entire windscreen when we are flying through weather it will generally stay on the window for a good ten minutes or so. It’s pretty impressive. I’ve also thought that squatting was also associated with the vessel sinking into the trough of its bow wave? I’ve noticed the the draft of my 38’ sailboat probably increases about a foot when I approach hull speed.

[@TimBatSea]

Thank you for watching Lars. Very cool! I wish I had video of that!

[@larsvihlen2185]

TimBatSea I’d have to imagine that some one could survive In a atmosphere of less than 19.5% O2 at sea level. I’ve attended a FAA sponsored mobile high altitude simulator where they displace the oxygen with nitrogen to equal the partial pressure of oxygen at 25,000 ft. The simulator is held at sealevel the oxygen concentration gets down to 7.8%. Now we only had about 3-5 min time of useful conscious. Interesting thing is once you go on 100% O2 with the quick don mask in about one breath you immediately regain all color vision, regain full field of view and get back to thinking. The cabin pressure in airliners is typically 8000’ and below which is equivalent of 15.75% oxygen at sealevel. It’s allowed to be upwards of 10000’ which is equivalent to 14.6% oxygen at sealevel. Unpressurized airplanes are allowed to cruise at 12,500’ for unlimited periods of time and up to 14,000’ for less than 30 min 12.8% and 11.4% oxygen at sealevel respectively.

[@johnbee7729]

Great explanation - thank you. I am a retired Engineer who is learning to sail. Your explanation works very well for me.

[@TimBatSea]

Thank you for watching and welcome to the channel John! You might want to check out my other channel, SV Paquita, where I too am learning to sail. CUOTO

[@dan5641]

Thanks Tim! I'm learning something new everyday. Now I know that when I wake up with a headache in the morning while at anchor, it's not from the Captain Morgan, it's actually from the keel bolts that are robbing the oxygen from my cabin.... Keep it up!

[@TimBatSea]

Thank you for watching! No! Never blame the Captain Morgan for anything but a broken heart!

[@jonathanleonard1152]

Your drawings and conceptual talk are very good for the use here. Regarding invasive species, when I was young, I was always inspected and had to show a clean bottom every time I exited the head. Regular lightning can have two parts. The negative change comes from clouds (or cloud to cloud). There can be a positive part that can be seen as lightning in super slow motion videography, this comes up from the ground or a tree or ships mast.

[@TimBatSea]

Thank you for watching Jonathan. Lighting is strange stuff! CUOTO

[@terrydepew1252]

Great insight to the mariners trade. Not boring, not to long, in fact i wish you had more "sea stories" to relate. imagine being a "stoker" on an early steam ship. But then i have always been fascinated with the old sailing ship stories. Read every book on the subject i could find. When ships were made of wood and men of steel. i always thought "rounding the Horn" on a square rigger was something i would have liked to do. i mean actually working the ship. Climbing the rigging to bring in or add sail and all the daily mundane tasks they had to do. Tho i would want modern clothing & gear. They did that stuff barefoot in the winter, wet and freezing. i am to old and soft now for that. Just like 40 some years ago i drove trucks without power steering and no A/C and thought nothing of it. Actually had a ball. Now, no way, no A/C, no go. and i can't remember the last time i drove a truck with no power steering.

[@TimBatSea]

Thank you very much for watching Terry. Have you read "The Grey Seas Under"?

[@terrydepew1252]

@@TimBatSeaNo i have not. i'll have to check it out. The story looks interesting as it's an older salvage tug. Possibly steam powered?

[@TimBatSea]

@@terrydepew1252 yes. 1500 how triple expansion. You will be hard pressed to not love. Farley Mowat is one of my favorite authors.

[@toddgilmore8412]

Very Informative Tim, The section on Confined Spaces is paramount to Marine Safety. Your chain locker example was very chilling! Explains the concept of never entering a confined space to assist a man down without the proper safety preparations and equipment. Entering confined spaces in today's marine industry is very strict and controlled. Precautions include: risk assessments, testing by Marine Chemists, Safe to Enter Permits, Work Permits, certified entry equipment, adequate training for all team members and a comprehensive Rescue Plan.

[@TimBatSea]

Thank you for watching Todd. Yes. All true. If you are new to the channel, welcome. Please consider Subscribing as I try to post new content every Tuesday. CUOTO

[@deanraf]

On the Great Lakes there is an atmospheric phenomena called Fata Morgana. It is a mirage that seem to happen when the water is cold and the air is hot. I mainly notice it with the large bulk freighters that run north and south on lake Michigan. I grew up with it so don't pay too much attention but it can on occasion confuse right of way situations, never a good thing with a fast ship coming toward you. I have not seen it much since being on the eastern shore. Thanks as usual for an informative post.

[@TimBatSea]

Thank you for watching Dean. Very cool story. I didn't know about that. Thank you!

[@christhomas83]

Love you're videos. Keep 'em commin. Bernoulli's principle of lift. I was a pilot and an old-time New England sailor. It’s easy. Your explanations are good however, when siding up to a solid wall, like on the East River, it’s properly called “bank suction." And the bigger the screw, the worse the phenomenon. Here’s something that you can help me out with. I forgot the name of the phenomenon when a vessel gets dragged along in another’s prop wash. I’d demonstrated both bank suction and this other phenomenon to my, then girlfriend and now, wife. I was crossing Long Island Sound from Norwalk to Huntington. There was an eastbound tug whose wake I crossed at about 80 yards astern of. I was sailing my Catalina 320 MK IV, shoal draft winged keel. As I crossed the tugs wake, my vessel immediately heeled 15°+ to starboard. It scared the crap outta’ my lady. I just cannot for the like of me remember what they call it.

[@TimBatSea]

Thank you for watching Chris. I wish I could help you, but that one has me stumped. CUOTO

[@0dbm]

Words can not describe what you will see on this channel You are truly King in comparison Nguyen che Linux channel Love your time lapse , keep the coming

[@TimBatSea]

Thank you for watching and for your kind words. CUOTO

[@mikewillis7985]

The Draft Suction you talked about is called the Bernoulli Effect, or Bernoulli Principle. The water between the two ships speeds up as they get close to each other. Making the water pressure drop between the hulls. the faster water moves in a confined space the lower the pressure becomes. The water pressure on the outboard side of the ships remains the same. The outside pressure is higher so it pushes the ships together

[@TimBatSea]

Thank you for watching Mike. CUOTO

[@geobrower3069]

I've had St Elmo's fire visit me several times over the years while flying a Cessna 206! Free surface effect, a new one for me, will watch for it next time I come alongside my friend's 60 SV. Always an interesting video, thanks Tim.

[@TimBatSea]

Thank you very much for watching. CUOTO

[@resdupbug]

OOORRGH OOORGH you hit that sooo hard OOOORGHHH! That is hilarious Tim, I remember hearing it awhile ago when I first watched this video, but could not find it again. Thanks for the smiles man!

[@TimBatSea]

Thank you for watching again! CUOTO

[@williamsestrom6355]

Fascinating tales! Thank you, Tim!

[@TimBatSea]

Thank you for watching William. If you are new to the channel, please consider subscribing. I try to post new content every Tuesday.

[@mayhemsmaster5050]

As a retired paramedic/flight medic, with extensive training in confined space, as well as technical rescue, I am extremely surprised to learn of the hypoxic deaths in the industry. I can understand going back into the 70s and before of the danger. But going forward I would have expected that the training of crews and the ability to not only react but provide emergent care for them until rescue/coasties arrive and take over care. I am the FNG here who stumbled across both of you channels and enjoy them very, very much... and have a million questions that I will ask in time to come. But thank you for such informative, and for me relaxing channel with wonderful content that is truly wonderful, please keep up the amazing content. Please be safe in your adventures. Much love n prayers from upstate NY.🙏💜

[@TimBatSea]

Thank you for watching and welcome to the channel Brian. CUOTO

[@senecapirate1254]

Another fine job Tim. Thanks

[@TimBatSea]

Thank you for watching. CUOTO

[@bladewiper]

I had confined space training several times over my career, and part of the training information was that on average there would be one victim and two supposed rescuers pasted out in the space, before someone clued in not to go in to rescue those people. Also heavier than air gases can displace the air/oxygen in the spaces causing the same issues. Loved this video.

[@TimBatSea]

Thank you for watching. CUOTO

[@ranger2316]

I was a hospital corpsman on a nuclear sub ... we're all about atmospheric control. One of my collateral duties was as atmospheric control officer. We monitored air constantly, but I sampled about 10 different trace contaminants with a Draeger air monitor every week. We also had a lot of void spaces the engineering folks had to periodically enter ... we always monitored the air before going in.. and ventilated when we could before entering. There was also a safety line and tender monitoring the sailor in the void space. Ships at sea are a floating industrial accident waiting to happen! Thanks so much for your discussion. It was so on point!!

[@TimBatSea]

Thank you very much for watching and your kind words as always. You are the man! CUOTO

[@waynebauer2770]

Another great one. Thanks Tim!!!

[@TimBatSea]

Thank you for watching Wayne!

[@alwaysbearded1]

Thanks Tim. I knew a little about all of these but learned so much more. Speaking of St. Elmo's Fire. That was the name of an all female chantey group I heard live once. I still have a cassette tape. Tells you how long ago that was! We lost some people in a plating works in our town but I don't think it was just lack of oxygen. I think some chemicals were at play too. A nasty industry. Similar to the story you related one man went into a tank to rescue his buddy. The extra exertion cost him his life while his friend having passed out and not exerting anymore lived, barely.

[@TimBatSea]

Thank you for watching Chris. Yes. All to real and seriously bad. CUOTO

[@gcw5352]

Have thought about this stuff for years thank you for enlightening me

[@TimBatSea]

Thank you very much for watching and welcome to the channel. CUOTO

[@jamespatterson1433]

I found your channel a few weeks ago while doing research about Tugboats. I'm a artist who was comitioned to paint a boat like yours for another captain. A present from his older sister. Being from Wyoming I know nothing about the sea, let alone ships and tugs. I so enjoying your channel introducing me into this world of yours. I did live on the Great Lakes, my big brothers sailed of ore carriers. So I was intrigued with their stories. Thank you for what you do, its so interesting. James Patrick Patterson Now in Virginia

[@TimBatSea]

Thank you for watching and welcome to the channel James. Please consider subscribing. I try to post new content every Tuesday. CUOTO

[@ronaldjoyce7374]

What a great segment, all very interesting!

[@TimBatSea]

Thank you for watching Ronald. CUOTO

[@BigBob473]

Ive seen several vids on KZbin showing examples of tugs being sucked under next to ships. Its scary stuff.Stay safe out there Tim!

[@TimBatSea]

Thank you for watching Bob. Many of those videos I believe were tripping videos, although suction I'm sure played into them as well.

[@nm8834]

Hi Tim, enjoy your channel. Going back and watching some older ones... This is one of my favorites! 💙⛴🩵 So interesting. RIP those poor people just doing their job, had no idea what they were walking into. 😔🙏🏻💐

[@TimBatSea]

Thank you for watching. Yes, It's very tragic. CUOTO

[@troyhoover9896]

Loved the video Tim. Very informative. Thank you

[@TimBatSea]

Thank you for watching Troy. If you are new to the channel, welcome. Please consider Subscribing as I try to post new content every Tuesday. #CUOTO

[@donaldkearney3932]

Re draft suction: Since air, like water, is a fluid, this concept is a common problem for people hauling travel trailers at highway speeds. A passing trailer truck first pushes you away from it because of the "bow wave" of air pressure when the truck approaches your trailer. You have to steer slightly to the left to counteract this force. When the truck's trailer has caught up to your's, the pressure turns into a strong suction force and you have to steer right (sometimes forcefully) to maintain control of your trailer and prevent it from being sucked into the side of the truck's trailer or create violent swaying which could lead to an accident. Stock car racers use this concept strategically by pulling up to the rear bumper of another race car (hopefully a team-mate's) and locking onto the suction from the airflow of the car ahead. This is called "drafting" and can save huge amounts of fuel in a long race -- maybe enough to avoid a last-lap pit stop.

[@TimBatSea]

Thank you for watching Donald. Many of those that have ridden motorcycles will attest to what you are saying. They feel it as it is happening, also at time either dire effects.

[@Dan_C604]

Great episode! Thank you 😊

[@TimBatSea]

Thank you for watching Dan.

[@martinbose7163]

I spent ten years at a medium size shipyard in San Francisco Bay; lots of tugs, ferries, barges, yachts, LST's, up to a 378' Coast Guard cutter. Anytime a "foreign" vessel (out of the area) came to us we had to pump out the bilges and dispose of the bilge water to a treatment facility. Also, without fail every open confined space had to be certified by a chemist every morning before anyone could go in. Finally, the welders had a hard and fast rule they had to follow. If they were using an acetylene torch in a confined space, at the end of his shift he had to shut off the supply lines at the manifolds on deck, then remove his torch from the hoses, then he had to pull the hoses all the way up to the deck and coil them up. Twice in the ten years welders forgot, and the Chemists stopped them from entering the area due to the gas concentrations. Both of the welders were fired instantly. Towards the end they were phasing out gas torches in favor of plasma cutters, which only used electricity and pressurized air to work.

[@TimBatSea]

Thank you for watching Martin. Oh yes! I can see how that would be a life threatening problem. Thank you for sharing.

[@jimserhant7741]

Excellent video, Capt. I’m sorry for the loss of your 3 colleagues. Not being an airline pilot, I can only tell you what I’ve heard from pilot friends in the past. They’ve said “St. Elmo’s fire” would light up their windscreens with a purplish glow. Stay safe.

[@TimBatSea]

Thank you for watching Jim. CUOTO

[@gavinmarshall6348]

Thanks for the interesting talk. I was particularly interested in the parton the speed of water. In the early seventies there was an unfortunate event in the British Navy involving a minesweeper call HMS Fittleton which brought about "the Fittleton Effect" I am sure if you Google that you will be able toread all about it. Basically it involved refueling at sea. The minsweeper was being refueled by a frigate(much larger ship) The minsweeper got too far ahead and swung round into the path of the frigate. the out come was not good and there was considerable loss of life. Many lessons were learnt. I am sure you will find it intersting.

[@TimBatSea]

Thank you for watching Gavin. If you are new to the channel, Welcome. Please consider subscribing. I try to post new content every Tuesday. CUOTO

[@James-seafan]

excellent video thank you tim

[@TimBatSea]

Thank you for watching James. CUOTO

[@caseycarney7025]

A good way to describe that free surface effect as if you've ever pushed a hopper full of mud and water and ran around or went into reverse real quick and tried to stop and all the water runs to the front of the hopper and lunges you forward

[@TimBatSea]

Thank you for watching Casey. That certainly works too. CUOTO

[@chrisallen1965]

You learn something new every day.......Once again thanks, Very informative.

[@TimBatSea]

Thank you for watching Chris. I really appreciate it.

[@davidsauerwrx7460]

Thanks Tim, that was great and exciting. I have experienced squat in several boats. Most of what you talked about was new to me. Great video! Dave

[@TimBatSea]

Thank you for watching Dave. Please consider Subscribing if you haven't already. I try to post new content every Tuesday. CUOTO

[@rickymherbert2899]

Confined spaces the probably the biggest single killer of crews, we all know about it, yet still sadly it goes on. An inland port near to me had a tragic case that involved a wood pulp cargo which had taken the oxygen out of the hold access trunking killing one of the crew who had entered it to get a broom. I had a "reverse" stowaway case! Sailed from Dagenham which is on the River Thames in the early hours of the morning. Arrived up on the dredge area later that morning. Loading and we could hear noises coming from on top of the wheelhouse. Sent the deckhand up to investigate who found a young lad up there. Seems he had managed to get on board un-noticed whilst we were discharging. He had decided that London wasn't for him, he had actually been a refugee and wanted to get back to Europe. Well he didn't get too far as we were loading for Dagenham again but I certainly had to do a bit of explaining to our office when I called in that morning. Another good, informative video Tim, keep safe and keep afloat.

[@TimBatSea]

Thank you for watching Ricky. It is so sad and avoidable. Great story about your stowaway!

[@rickdunn3883]

@@TimBatSea Work Permits (safe for men) are a critical aspect for ships and tugs. Unfortunately, many mariners do not understand the hazards of not using their Companies Safety Management System Permits. Another problem is that many SMS's simple say that the company does not permit entry into confined spaces...so they have little to no training on the hazards and some have no Entry Permits in the SMS. The reality is that there is no tug or ship where people don't have to go into a void space or cofferdam at some point. Permits save lives!

[@waynecompton7612]

Good morning Tim, Thank you for another informative video!! Take care and stay safe 👍😎🇬🇧.

[@TimBatSea]

Good morning Wayne. Thank you for watching!

[@francmeister420]

i got sucked in toward a larger boat on a 17' skiff.. caught his wake and started surfing it and caught up real quick

[@TimBatSea]

Thank you for watching Daniel. I am sure you did, but probably for a different reason.

[@francmeister420]

TimBatSea the reason was entirely accidental.. 😁

[@robertdikes7722]

You do such a great job with your vids. Easy to listen to and watch. I am a Navy vet that never went to sea. I was a Hospital Corpsman an spent my enlistment working at Naval Hospital San Diego. Thank so again Tim for all you teach us non sailors!

[@TimBatSea]

First of all, Thank you for your service! And thank you for the kind words! It really means alot to me!

[@Mrsnichols1965]

The odd effect that happens with squat in a relatively small waterway is that it'll pull the water off the beach as a result. In Tolchester, before they dredged the channel years ago, if a ship with deep draught went through, just before it was directly abeam the water would start draining off the beach. Water level would drop by about a foot or two. The result was a bad sort of erosion, and they slowed the channel speed limit to try and mitigate the damage. As kids, we always thought it was pretty cool. Once the channel was dredged in the 80's (I think) that effect became lesser, as did the wakes, which smoothed out quite a bit once the depth could dissipate the energy. Neat stuff unless you are a land owner, lol

[@TimBatSea]

Thank you for watching. We experience the same thing. When a barge is pumping off in a tight channel, we try to let the tankermen know when I ship is approaching. They have been know to suck a barge off the dock enough to break the hose.

[@paulbearman4653]

Really enjoyed this vlog. We own a narrowboat on the UK canals and often experience the ground effects and the boat being attracted to another passing boat. I now have a new excuse when I ‘crash’ when mooring up. Thank you.

[@TimBatSea]

Thank you for watching Paul. If you are new to the channel, welcome. Please consider Subscribing if you haven't already. I try to post new content every Tuesday. I am a big fan a of "Cruising the Cut" and have grown to love the narrow boats.

[@chrisdawson5093]

Some great information!!!

[@TimBatSea]

Thank you for watching Chris!

[@flashcar60]

The free-surface effect is what finished off some of the ships in Pearl Harbor on Dec 7, 1941. Also: the Navy had a few mishaps caused by that "lifting" phenomenon described, when learning how to resupply aircraft carriers at sea, while maintaining steerage way. Military pilots have to be taught how to avoid this when learning to fly in formation.

[@TimBatSea]

Thank you for watching Sam. CUOTO

[@ThatSB]

I am off the barge and at home. But at 15:49 when that phone rang my anxiety went through the roof and my body tensed up. Took me a couple seconds to realize it was your video and not dispatch calling my boat to destroy my relaxation time with some dumb ass schedule change. It just occured to me from that that I have some form of PTSD from the sound of the Vane phone system LOL

[@TimBatSea]

Thank you for watching. We only have one rule on here and that is that we try very hard to directly mention by name Tugs, Companies or Customers.

[@peterheiberg566]

Your explanation of ‘squat’ makes a certain amount of sense especially with unpowered barges but I was under the impression that in a power vessel in shallow water squat was caused by the action of the screws pulling water from under the vessel. If you remember the ferry disaster in the English Channel (Spirit of Free Enterprise?.. or something like that) a crewman failed to close the bow doors after loading, the bridge crew accelerated hard, the bow squatted and scooped up half the North Sea and the free surface effect did the rest. But in that case I think the squat was caused by the screws pulling water from under the ferry. Bernoulli’s law relates to pressure dropping as a gas or liquid accelerates ( if memory serves).

[@TimBatSea]

Thank you for watching Peter. I am not thinking the bow dropping was an effect of ground induced squat, but I could be wrong.

[@desertbrewcrew1974]

This is a great video. So interesting. Good work Capt.

[@TimBatSea]

Thank you very much for watching!

[@mikegallegos7]

In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy. The principle is named after Daniel Bernoulli, a swiss mathemetician, who published it in 1738 in his book Hydrodynamics. Simplified, the water is pushed away from the space between two vessels or a vessel and a stationary vessel or land bank. Water gives way to solids; water rather is wishy-washy. 😆 Luv your vids!

[@TimBatSea]

Thank you very much Michael. CUOTO

[@bostonpaul7065]

Mud in ballast tanks is another one. The diatoms and bacteria in the mud consume oxygen, and under the surface of the mud, die, and then anaerobic bacteria consume that and make hydrogen sulfide. So we can test the air of a ballast tank, then when people walk on the bottom and displace the mud, the hydrogen sulfide presence increases dramatically. It was always annoying to have to be in a ballast tank and then turn around and run because someone forgot to stay in single file and set off an alarm.

[@TimBatSea]

Hey Paul! That is amazing and makes sense. I never thought of that. Thank you for watching.

[@kenprevatt1267]

Interesting

[@heathwellsNZ]

I don't work in the maritime industry but a person that I worked with once lost their life entering a septic tank being cleaned trying to rescue someone else who had collapsed.... confined spaces = very dangerous. When I started my career 30 years ago it was commonplace to enter a sewer or stormwater "manhole" and climb down the ladder to the bottom of the chamber to inspect the channel at the bottom or pipes coming in/out of the manhole chamber.... Nowadays it's full gas analysis devices, full harnesses and A-Frame gear on the top and support personnel....

[@TimBatSea]

Thank you for watching Heath. Someone on here had said in the comments that safety regs are written in the blood of those that died because of a lack of them. Very sad.

[@billmoran3812]

Great content Tim!

[@TimBatSea]

Thank you very much Bill!

[@robertdinicola9225]

I used to have a 20' shamrock. Single screw inboard. I could adjust the trim tabs to where the back of the boat was almost 2 1/2' under water level! Pulling knee boards was crazy, we didnt have the wakeboards yet. I broke 4 knee boards jumping the wake from thst boat. Years later my son was able to surf it.

[@TimBatSea]

Thank you for watching Robert. Please consider subscribing. I try to post new content every Tuesday.

[@robertdinicola9225]

@@TimBatSea i subscribed as soon as i found your channel!

[@TimBatSea]

@@robertdinicola9225 Thank you very much Robert!

[@normtyneships194]

Thanks Capt. The Venturi effect can be noticeable when I am out on my bicycle. Too many car drivers overtake too close and don't realise that the effect is noticeable on the bike. Thankfully most leave a large enough gap. Very informative about the 'closed spaces' too for an amateur like me.

[@TimBatSea]

Thank you for watching Norman! Love your channel, and for those who haven't seen it, you should check it out!

[@alwaysbearded1]

Norm, as I daily cyclist that's how I notice they are too close. Drivers forget we don't have rear view mirrors, air bags, tons of steel and glass.....

[@pascalsurlaroute]

@@alwaysbearded1 I have 3 road bikes and they are all equipped with rear view mirrors. Try it, you won't go without them ever after. The worst Venturi is from long lorries passing too close when the shoulder or cycle path is not very wide. They are definitely sucking cyclists into their rear axles. Scary at best. A rear view mirror is your friend in this situation and you rapidly become an expert at gauging the gap they leave before overtaking you. Ride safe.

[@alwaysbearded1]

@@pascalsurlaroute Thanks for the advice. Most of my riding involves slower traffic but getting too close is still not good. What type of mirrors do you prefer bar end or other types? Might help.

[@chrismackie6291]

I don't know if you would ever see it in your harbour but in the lakes where I live and in Bass Strait we occasionally get really bright green phosphorescence in our bow wave. Always looks magical, especially on a dark night.

[@TimBatSea]

Thank you for watching Chris. Towing up and down the coast, I've seen some pretty cool bioluminescent shows as well. Cheers!

[@onrr1726]

Christopher Columbus documented the same affects when he sailed into the caribbean sea.

[@TheByard]

Tim You've stirred my brain again and I like that, don't won't the grey matter going soft. My father was building a slaughter house for Wall's Pork Sausages in London and some Saturdays he would take me as a school boy into work with him. This Saturday he told me to stay clear of the truck park, driver training was taking place. Me being curious crept over to the fence and spoke with an instructor, he was training driver to handle Live Loads. The pig carcass was hung from rails in the roof of the truck and would swing when cornering and braking. Just like your tray of water. I spent most of my working life in an Enclosed Space and I'm trained in Tunnel Rescue. Tunnel Boring Machine's rust, ground types will consume oxygen, some construction methods will also consume oxygen and of course the danger of fire. Just to add a bit more excitement some tunnels were constructed using compressed air to keep ground water out. So we had a higher concentrate of oxygen. In the old days miners used canaries in cages, they would fall over at a lower concentrate to humans, so if the bird toppled the guys got out quick. The squat effect: Several years back a cruise ship was built somewhere in the Baltic and needed to use the Storbaelt Channel between the Danish island of Zeeland and Fyn, But a suspension bridge had been built. So the ship was equipped with a telescopic mast and maybe funnel top that would lower. Calculations were done on air draft, tide and bridge clearance that all would be OK But as to be on the safe side the captain ordered full throttle so the ship would squat and gain extra clearance. KZbin

[@TimBatSea]

Thank you for watching! Very interesting, but makes sense.

[@TheByard]

@@TimBatSea Tim an update on the Storbaelt bridge video. Check out Cruise Guy, Allure of the Sea, Limbos under Great Belt Bridge. My facts were a little off but I watched it a while back.

[@RobertBardos]

Brilliant. Thanks for the unique lesson. Ahoy!

[@TimBatSea]

Thank you very much for watching. If you are new to the channel, Welcome. Please consider subscribing. I try to post new content every Tuesday. CUOTO

[@RobertBardos]

@@TimBatSea talked me into it. Cheers from St.Cloud Minnesota 🇺🇸.

[@TimBatSea]

@@RobertBardos thank you very much! Welcome aboard

[@jeromemorris2700]

Cool story fishing with Capt. Kraus.

[@TimBatSea]

Thank you Jerome. #CUOTO

[@davida877]

Tim thank you again - St Elmos fire is interesting, must have been a wild experience, static electrical stuff is very powerful maybe we will harness it one day - When I was young and learning to sail dinghies the phenomenon I felt was - this is like trying to sail a Wet Bar of Soap in a bath tub - I thought I’d never get it and really felt uncomfortable - then one day it clicked and worked out the difference in forces and loved sailing since. Thanks again love every episode.

[@TimBatSea]

Thank you very much for watching David, and please consider subscribing. I try to post new content every Tuesday.

[@phillange166]

Another great Video, Captain. I would like to make a motion that you continue on with your most excellent way of explaining maritime phenomena! You are accurate and easy to listen to. re: St. Elmo's fire, ... ... in the 1960s I lived in northeast Brazil helping fishermen start up a cooperative.. Before landing there, I thought, "Must ask about St. Elmo's fire". On several nights the fishermen told me about the 'Fire Potato' (Batata de Fogo), a small blue fireball that at night flew slowly above the water , circling around at random, willy nilly, with a twitchy uncertain course over boats that were anchored far offshore, trolling, or fishing the reefs. If it passed over a vessel then someone on that sailboat would die within two weeks; they cited several cases. They never described this blue fireball attached to their sailboats, they all fished under sail... so mast, boom, one sail. The fireball was free and wandered slowly at will. I never saw it. (Happy to be a subscriber, I wouldn't miss an episode.)

[@TimBatSea]

Thank you for watching and subscribing Phil. In thinking about your story, the only thing that comes to mind is the observer's prospective. I am wondering if they were able to seeing thing from a higher altitude, if they would see the effect starting to ionize the air at the highest points of their boats. Or it could be that they are just sinners. LOL (Bad joke)

[@Chironex_Fleckeri]

Commenting before I watch or read comments. You ever hear active sonar through the hull? Looks like your channel is on the up and up! It's good outreach for an industry few know anything about. As a kid I'd watch barges go down the Mississippi up in Red Wing. For some reason, it seemed like a simple job. Just point it where you want it! Man, the void space incident... that's really scary. That makes sense in a sealed environment like that. I don't think I'll forget that lesson. I had no idea the oxidation reaction could consume that much oxygen. I suppose if it remains closed off for long enough.

[@TimBatSea]

Thank you for watching Bill. If you are new to the channel, welcome and please consider Subscribing. I try to post new content every Tuesday.

[@TimBatSea]

Oh, and yes. We hear a lot of weird things through the hull.

[@gilbertbey6407]

One of the most interesting video I have ever seen on the whole youtube

[@TimBatSea]

Thank you very much Gilbert. If you are new to the channel, welcome and please consider Subscribing as I try to post new content every Tuesday. #CUOTO

[@gilbertbey6407]

@@TimBatSea Done!

[@pbcanal1]

A lot of the You Tube narrow boaters in the UK will talk about going too fast and being sucked down to hit bottom. The effect can even be felt when being pulled at low speed by miles or horses. In the later 1800s, many engineers studied the effects of tractive resistance in canals, trying to convince the boaters to stop over loading their craft. As for confined spaces, I think any volunteer firefighter can tell you stories about stacks of dead people in grain silos as everyone rush in to save their buddies.

[@TimBatSea]

Oh man..... That comment didn't end on an up beat. Lol. I don't know if it was you, but one of you commenters got me to watch cruising the cut, and now I'm addicted. That guy is a true wordsmith! I am all in with his channel and I think spending a few weeks on a narrow boat is on my list of things that I need to do.

[@pbcanal1]

@@TimBatSea Foxes Afloat is also very good for the quality of the presentation. They even got a Amazon Prime series out of it!

[@gezac440]

I was a pilot most of my life, and we would get st elmos on the props. On time it was so much that the st elmos on the props made a ring. It would change shape and color as we change the pitch and RPM of the prop. It lasted for a good 20 minutes, so much that our radios were total static and Everyone in the back was scared shitless until I explained it to them.

[@TimBatSea]

Wow! That is cool. I've never heard of that happening like that before. Thank you for watching. CUOTO

[@johnmccaughan4195]

I have heard my Uncle Bob Mims talk about Saint Elmo's Fire on cattle horns from his trail driving days. He said it would have been beautiful if they hadn't been running and his horse was spooked by it.

[@TimBatSea]

WoW!!!!! That's Cool! And a new one for me!!!!! Thank you for watching and for sharing!!!!!!

[@seanwaite4755]

You can see the overflowing ballast scenario on Deadliest Catch where they keep the tanks constantly pumping and overflowing like you said to keep the tank pressed up to eliminate free surface and also continue a fresh supply of water to the crabs. Most all modern ships now utilize the exhaust system into their cargo tanks to inert them and bring the vapor of the cargo that they Carried below LEL (lower explosive limit) for safety

[@TimBatSea]

Thank you for watching Captain Sean! Yes! Good information! Thank you for being part of the discussion.

[@dannyj5688]

Very interesting and quite informative!!!

[@TimBatSea]

Thank you for watching and welcome to the channel Danny. Please consider subscribing. I try to post new content every Tuesday. CUOTO

[@dannyj5688]

@@TimBatSea I Am subscribed....enjoy contents...Never worked on a tug before, but I still enjoy your info...I am from south Louisiana, and I did have a 55ft. steel trawl boat....Lots different from what you do...Shrimping industry is a harsh one. I only lasted a couple of years, sold everything, and found another field of employment...

[@jabjab1010]

Thanks Captain. I thought you were gonna mention they Green Flash, and wondered if you would talk about prop walk (looking forward to your drawings!!). But I assume your barges are always dual props. Great video.

[@TimBatSea]

Thank you for watching John. Yes, our tugs are all twin screw. And yes, I should have talked about prop-walk because it seems to come up quite often. The green flash has been mentioned in comments below. I had said that I am not sold on it's validity, but after further consideration and watching what people are calling a green flash, then yes. I have seen that many times. It's just not (well at least in my experience) the Flash you see in movies and more of a dim fading afterglow that looses other colors before loosing it's green. Now I know that millions claim to have seen the Flash, but I have spent the better part of my life on the water and watched countless sunsets and I am not a believer although I want to be. (And perhaps I was hoping for something bigger than it was...... I think my wife said that)lol

[@bradhanson4803]

Very good tim. Thank s Brad from Woodstock ct

[@TimBatSea]

Thank you for watching Brad.

[@mustangcircut]

Hey Tim I remember when I was a kid the Qe 2 went aground off the vineyard like you mentioned. It was towed to Boston Harbor at Dry-dock that is right on the other side of black falcon pier where the cruise ships come in. It was placed in a berth for repairs. I have pics of her from when my parents took them coming home from a trip. That ship was massive. That area housed some pretty good size war ships for ww2. They also have 2 buildings where they made tanks during that era. It's all retail now. Rebook has rented a large portion of the area for sports equip testing. Oh btw the mug is shipped🙏 And hope this one comes in one piece😄 Stay safe Boston is getting the crap weather now.

[@TimBatSea]

Thank you very much for watching. I am glad someone (you) verified my old memory of the QE2. Wasn't completely sure if I hadn't confused it with another incident. Many cups have been shipped, and I have only heard of one that arrived broken and Teespring made good on it. Thank you for supporting the channel. Please email me a pic of you with when it arrives for future videos.

[@mustangcircut]

Absolutely. 👍

[@Christoffer83]

Thanks for the interesting video Tim. An idea come up to me when you talked about ballast. You could reach out to Chief Makoi and see how they do it on the ship he's working on. And maybe from the their point of view how they interact with tugboats.

[@TimBatSea]

Thank you for watching Christoffer. I have reached out to Chief Makoi a few times (I am a huge fan), but he is a busy guy and his channel (rightfully so) is massive! I'm sure he never sees or has time to respond to me. I have tried to contact him on other platforms as well, but have not been successful. If you get through to him, please let him know that I am want to contact him.

[@Christoffer83]

Chief Makoi has a great channel. Sometimes he has a livestream on his 2nd channel 'Pep talk with Chief Makoi' where he talks with the viewers. I've got a couple replays from him on the premiere of his videos in the livechat on his main channel. But now when he is out at sea it's difficult with internet access. Next time I'll mention you and your great channel.

[@TimBatSea]

@@Christoffer83 That would be awesome! I love that guy and his channel!

[@KutWrite]

Makoi's a doctor, not a... Ooops, wrong character.

[@TimBatSea]

@@KutWrite hahaha lol. Good one!

[@williamralph5442]

Fascinating stuff Tim. I experienced buzzing from a radio antenna while on a high peak. very creepy. I was wondering, do you ever have to bring a pilot onboard.to guide you in? tahnks

[@TimBatSea]

Thank you for watching William. Yes. There are some places we regularly take a pilot (Mississippi River) and we are required to do so for anywhere we don't have "Recentcy" or 12 trips in and out.

[@mikepennington978]

WOW I had no Idea, very interesting and all makes since. Quick question. I noticed 4 white wheels in the cabin over your head , what are they for.

[@TimBatSea]

Thank you for watching Mike. Those are the vertical and horizontal controls for our two lower search lights.

[@michaelrice500]

Free surface demonstration: Fill a wheelbarrow half full of water and then start maneuvering around. You'll feel the forces plainly. Crab boats have seawater tanks - the crab need to be alive to sell them, so they need new water (and oxygen) to survive - so sea water is pumped into them and they're kept pressed up at all times. When a pump fails, or a generator drops off line, or whatever, the tanks can get a bit of air on top, which is free surface. I can tell you that there have been dozens of crabbers lost in Alaska and elsewhere from losing transverse stability because of this (and ice, deck loading, etc.) There was even a seiner lost in bad weather when the big aluminum skiff which was tied on deck got some water in it and reduced the stability enough to capsize the boat. Free surface will be present in any tank or compartment if it isn't completely empty or completely full.

[@TimBatSea]

Thank you for watching Mark.

[@melwilson514]

Hi Captain Tim. Have you ever seen a water spout while out at sea. I did on a Caribbean cruise. It followed us for quite a while. I wish you smooth and safe sailing. Mel

[@TimBatSea]

Thank you for watching Mel. Oh yes. They are not as uncommon as you might think.

[@labrd41]

Interesting, thank you, but your best videos are when the boat is underway. That's what brought me here.

[@TimBatSea]

Thank you for watching. I have more of them coming. I just didn't want to bore people after putting up a bunch of split screen video. But I'll try to get one out for you right away.

[@wallylumorcas]

Hey Tim, I was once in a hail storm pelting the water all around the boat and there was a complete circular rainbow around the boat. Other phenomena was sailing in a race in the fog and as the daylight came up all the boats around us in the fog was upside down. I also worked on a TV transmitting tower and was working on a microwave dish a 100 ft level at night and in a snowstorm and watched the tower glow green and an arc flashed off. There was no big bang. but the bolt knocked the operator on his ass in the transmitting building. The Saint Enos light was used by Captain Ahab to convince his crew, in Moby Dick, to continue hunting the white whale.

[@TimBatSea]

Thank you for watching Wally. CUOTO

[@w.colonialboy9144]

Cheers sir, I enjoy your vid's - thank you

[@TimBatSea]

Thank you very much for watching and please consider subscribing. It helps out the channel alot.

[@simonpeters4525]

Thanks for talking about the problems with invasive species. Such a massive problem and I didn’t know there are regulations in place to prevent it or limit it!

[@TimBatSea]

Thank you for watching and please consider Subscribing if you haven't already. I try to post new content every Tuesday.

[@alwaysbearded1]

Similar regs are in place for trailer sailors. But much easier to clean the hull and bilge of a small boat. Imagine a mussel that can't walk suddenly getting transported hundreds of miles to a lake with nothing that eats it.

[@jefflong3200]

Tim really interesting! Is the free surface effect the same thing as a slack tank?

[@TimBatSea]

Thank you for watching Jeff. Shirt answer, no. Long answer, they are tow different things. A tank that is filled anywhere from %10 to %90 is a slack tank and and cause free surface effect. Below %10 is considered empty and above %90 is considered full or "pressed"

[@marconrustNL]

Great video again. Makes me regret more and more that I decided to not go to the maritime academy when I was still young ;)

[@TimBatSea]

Thank for watch Mark. Please consider Subscribing if you haven't already. I try to post new content every Tuesday.

[@marconrustNL]

TimBatSea Already did a couple of months ago 👍😄

[@mustralineabsorbine5082]

I think the free surface effect is seen in the size of tanks that are on transport vehicles. Water, in particular, is much heavier than other liquids, and so when one sees a relatively smaller tank trailer, it probably is carrying water. Larger tank trailers, such as gasoline haulers, are relatively much larger than those tank trailers which carry water. The free surface effect would make carrying water in a volume equal to a gasoline tanker very dangerous, as the water moving sideways in a turn would probably tip the trailer over.

[@TimBatSea]

Thank you for watching and please consider subscribing. I try to post new content every Tuesday. Free surface effect can happen with almost any liquid. Thankfully tanker trucks and trailers are baffled very well for that very reason. You are correct in thinking that weight can play a roll in the affect, but viscosity can too.

[@view05nys]

A small tanker split in the middle as it was pulling away from the dock in Port Jefferson harbor in 1972. The ship was only 9 months old and had gone through a couple of storms at sea. Fortunately it had unloaded its fuel load at the depot. It ended up in a "V", with stern and the bow on the bottom in 32 feet of water. I think usually things like this happen if not carefully balancing the loading/unloading of cargo. This ship was empty. One of my favorite quotes "There is always the unexpected" (Movie Bridge on the River Kwai}

[@seanwaite4755]

The vessel was the Martha R. Ingram which was actually a ITB (integrated tug barge) Were the tug was basically a engine pod coupled to the barge as one unit (then a modern technique to reduce Manning requirements, a different topic) I grew up in Port Jefferson and remembered going to the harbor on a freezing January day to see her broken and I saw them tow the two pieces out with Ice chunks floating across the harbor. I was told and it even came up as a case study in a stability class in college (URI Commercial Fisheries and Marine Technology) that it broke do to loading ballast fore and aft, leaving the middle empty, like Tim talks about as Hogging. Though I just read a Coast Guard Marine causality report that mentioned her being ballasted to be able to turn around in the shallow water but doesn't say how or what tanks were loaded. The report blamed the kind of steel ABS allowed the hull to be made of being brittle and the lack of crack arrestors welded in the hull. They believe a deck crack from where the cargo booms were traveled splitting her in two. In my opinion Most likely from Hogging from the ballast. If that was the case they're error probably saved their lives and she didn't crack in two offshore in bad weather.

[@TimBatSea]

Thank you for watching Chaz, and a big thank you to Captain Sean for the most excellent information!

[@AdeTamiya289]

Hi Tim really enjoyed the video was very interesting. Was wondering have you seen a mirage at sea . Kind regards Adrian

[@TimBatSea]

Thank you for watching Adrian. I have, many times. But it's not like you seen in the movies. On a hot day with land out of sight just over the horizon, sometimes you will see the land pop up from over the horizon and be higher than it should. I am told it is the light being bent around the curvature of the earth due to temperature differences between the warm air and cooler ocean temps.

[@FloridaJack]

Another interesting video.....

[@TimBatSea]

Thank you for watching Jack!

[@ClassXIRoads]

Interesting Video. Do you ever get a temperature inversion that gives you a optical illusion? Also those binoculars on the bridge? your or companies .. what brand? On invasive species and electrical current.. I saw where on the Chicago river they have a section of the river electrified with a low current to stop the Asian Carp from reaching the Great Lakes

[@TimBatSea]

I tool saw that. Very interesting. Thank you for watching. CUOTO

[@michelpelletier75]

I am a retired sailor. And I have seen that St- Elmo's light . It is real.

[@TimBatSea]

Oh yes it is, and welcome to the channel. Thank you for watching. I try to post new content every Tuesday.

[@BrazilianSeafarer]

I tell you what capt, you should be a teacher on that subject. Of course it’s not the same all the time due to nature but you have described it so accurately. Just another great video.

[@TimBatSea]

Thank you very much!!!!

[@hankh1610]

Tim B. Howdy; Your explanation of the bakn sucking the ship into it sounds kinda topical what whit the Ever Giving incident and compound some steady 25 -30 knot winds from the West.

[@TimBatSea]

Thank you for watching Hank. I am not sure that suction was a cause of the Evergreen ship's problem, but I am sure everything will be explained in the coming investigation. CUOTO

[@richardbohlingsr3490]

That free surface effect is really bad in tanker trucks too. If you make a turn too fast on an off ramp it can tip the truck over sideways opposite the direction of the curve and by stopping too hard it can drive the truck forward several feet causing an accident by preventing the driver to stop as planned. I guess is goes back to the golden rule of not approaching a dock faster than your willing to hit it. 8-) Speed kills, slow just upsets others.

[@TimBatSea]

Thank you for watching Richard. Oh yes. I imagine it does. Stay safe!

[@glennlepien473]

Well, well, Capt. Tim .. after all these videos. You Do Know SQUAT .. 8D .. Thanks again for another great explanation of maritime physics .. Well done. R/ Glenn L.

[@TimBatSea]

Thank you for watching Glenn!!! CUOTO

[@scottpullen9166]

Great Shows Tim B,,, Kinda Bored With The Pandemic and all,,, Alot More Too it Then Most People No!!!! Thxs Scott P.

[@TimBatSea]

Thank you for watching Scott. If you are new to the channel, Welcome. I try to post new content every Tuesday. CUOTO

[@jimt2853]

Interesting post. The squat has been used to get some newer monster cruise ships out of shipyard channels when going under bridges to reach open water. BTW how was your New Orleans trip, thought maybe to standby with shipping needs due to the hurricane that passed to the south. Stay safe in the storm Tuesday!

[@TimBatSea]

Thank you for watching Jim, and please consider subscribing. I was just filling in on a boat in NOLA but on my regular boat in NYC.

[@jimt2853]

@@TimBatSea I have been a subscriber for quite a while..

[@TimBatSea]

@@jimt2853 Thank you very much.