What is the BULBOUS BOW for?

  Рет қаралды 4,713,972

Casual Navigation

Casual Navigation

Күн бұрын

Пікірлер: 2 700
@davidjames1068
@davidjames1068 6 жыл бұрын
The bow wave you want to mitigate will vary depending upon the ships speed, sea state and wind. A fixed bulb can only be optimised for a single condition and in other conditions will actually be harmful. In any case, the mitigation will only be partial at best, so the benefits might be limited. For a vessel almost always travelling at a constant speed this might be acceptable. But for a vessel constantly changing speed and course, example a sailing ship or warship the benefits might simply be too small to justify the costs. For a small yacht the benefit might be very small ( the speed is low, the bow wave very small and the fuel is free and who really cares if sometimes you might go 0.1 knots faster ). An ideal bulb would be able to change it's shape to automatically adapt to the conditions, just like aircraft have swing wings. However making a 10?? ton shape shifting bulb might be way beyond practice, although perhaps this would be a good project for a naval design student somewhere.
@CasualNavigation
@CasualNavigation 6 жыл бұрын
Thanks David. You are right, it would be a great project for a naval architect student - and I know shipping companies would buy it if it would save fuel!
@huss03
@huss03 6 жыл бұрын
I would have thought that a bulb that can be made to move it's position forwards and aft depending on ship speed wouldn't be beyond the limits of engineering. Wouldn't that widen the window of speeds for which the anti-phase wave could be set up?
@davidjames1068
@davidjames1068 6 жыл бұрын
Moving the bulb alone, might not be enough to help. It might need to change size/shape as well. The key problem would be if the wider window of speeds gives useful savings at speeds actually commonly used by the ship.
@greeneggsandsam2014
@greeneggsandsam2014 6 жыл бұрын
david james As I understand, these bulbous bows are used mainly on large, ocean traversing cargo vessels, which do travel at mostly constant speeds at sea. Their main speed changes happen near land, and not where they spend most of their time moving through the water, the ocean.
@matthewhemmings2464
@matthewhemmings2464 6 жыл бұрын
david james you can still try to aim at an optimal condition. The cost is marginal on the scale of large boats being built, and the drag is mostly affected by high speeds, so you can bet that optimizing the bulb for medium-high speeds for bigger ships is a sure way to go.
@jakedragsknee
@jakedragsknee 6 жыл бұрын
I believe it’s for mating reasons with the female ships
@johnclayden1670
@johnclayden1670 6 жыл бұрын
all ships are female ...
@jakedragsknee
@jakedragsknee 6 жыл бұрын
John Clayden did you just assume all boats gender
@ph89787
@ph89787 6 жыл бұрын
John Clayden Not entirely true. The Kaiser wanted some of the German ships to have male pronouns.
@Cleptro
@Cleptro 6 жыл бұрын
Jake Fejer All ships are female.
@jamesavery6671
@jamesavery6671 6 жыл бұрын
Female's can wear strap on's though...…..
@thomasmoser7382
@thomasmoser7382 5 жыл бұрын
i really like these kind of videos, no bullshitting around, informative and in only 4 minutes i know what i wanted to know when i clicked on the video
@roonbare2769
@roonbare2769 3 жыл бұрын
And no annoying background music
@airzulu2733
@airzulu2733 3 жыл бұрын
I found it interesting . Having watched ships and this bulbous bow and not understanding what's its use . And now we know . I liken it to a form of leading edge on an aircraft wing .
@Allthingstech3108
@Allthingstech3108 6 жыл бұрын
I am teacher and I can tell you you did a great job, no flashy words but the physics was very clear.Thanks
@CasualNavigation
@CasualNavigation 6 жыл бұрын
Thanks Physics_rabbi. I hoped it would would come across clear.
@wholeNwon
@wholeNwon 5 жыл бұрын
Don't eschew "flashy words". Learn instead.
@RideBikes_Walkplaces
@RideBikes_Walkplaces 5 жыл бұрын
Not an English teacher I presume.
@wholeNwon
@wholeNwon 5 жыл бұрын
@@CasualNavigation Clearly?
@chikennuget3634
@chikennuget3634 5 жыл бұрын
wholeNwon when teaching a new concept it’s generally not a good idea to introduce new terms. it’s better to let the students grasp the concept before telling them how to put the concept into words
@Ernzt8
@Ernzt8 3 жыл бұрын
My father, who was a navy man, always told me that this behaviour was found by accident. The first was build for sonar and it created a possitive increase of speed
@davidjames1068
@davidjames1068 2 жыл бұрын
I read somewhere that they discovered this when they put rams on the front of early metal war ships. When a ram fell off, the ship was slower and someone went 'ah-ha!'.
@Nibby12
@Nibby12 2 жыл бұрын
Your Father was right. On Warships they are Sonar domes.
@SakuyalzayoiTheMaid
@SakuyalzayoiTheMaid Жыл бұрын
i immediately started chanting sonar when the video asked what the bulge was for, only now i learned it also on very specific occasions and circumstances helps with the waves.
@pizzlerot2730
@pizzlerot2730 Жыл бұрын
​@@Nibby12sorry but no. The bulbous bow predates sonar by quite a bit. The reason that it's used for sonar on warships is simply that the location of the bulbous bow is exactly where you'd need to put a forward-sweeping sonar setup, and since they already had that protrusion, they just put it inside of the bulbous bow.
@pizzlerot2730
@pizzlerot2730 Жыл бұрын
Now you can tell your dad that it's actually the opposite, and he can learn something new 👍
@jeanclermont4195
@jeanclermont4195 4 жыл бұрын
“Is that a bulbous bow on your hull or are you happy to see me?”
@aberamagold7509
@aberamagold7509 4 жыл бұрын
Sorry I was just waving.
@dattatreya4448
@dattatreya4448 4 жыл бұрын
?
@mrsauce9307
@mrsauce9307 4 жыл бұрын
Lmfaoo
@robertpradella6550
@robertpradella6550 4 жыл бұрын
Lol
@jduff59
@jduff59 4 жыл бұрын
I just like the word "BULBOUS".
@andremacedo8463
@andremacedo8463 6 жыл бұрын
I love how the internet have all the answers to those random questions we ask ourselves about lol
@moritzwegge6835
@moritzwegge6835 5 жыл бұрын
Yeah!
@doughesson
@doughesson 5 жыл бұрын
Look up cow aerodynamics some time. You won't regret it.
@NoShame22
@NoShame22 5 жыл бұрын
And all the questions we don’t ask ourselves
@lukeaabbcc313
@lukeaabbcc313 5 жыл бұрын
@@doughesson down the rabbit hole i go lol
@DJLsbVapes
@DJLsbVapes 5 жыл бұрын
Canceling the wave out, also reduces turbulence and cavitation on the rear propulsion
@bendover2684
@bendover2684 4 жыл бұрын
Thanks i Just wanted a short 0answer and Not 4 Minutes of blabla
@isonbogosian3080
@isonbogosian3080 4 жыл бұрын
Yoooooooo
@davidjames1068
@davidjames1068 4 жыл бұрын
Really? For a typical freighter i would have thought that any effect would be dissipated long before it reached the stern of the ship. And no freighter should ever be using it's propellers close to cavitation speed.
@mmonroe8253
@mmonroe8253 3 жыл бұрын
There you go! It took you 10 seconds to explain what the video tried to do in 4+ minutes Thank you!
@bobthebuilder2922
@bobthebuilder2922 3 жыл бұрын
Yes
@WheelEstate
@WheelEstate 6 жыл бұрын
I consider anyone with a British accent to be an expert.
@CasualNavigation
@CasualNavigation 6 жыл бұрын
Thanks Manoj. As long as we all keep learning, that's the main thing
@nearestyoutube
@nearestyoutube 6 жыл бұрын
Mr Bean?
@mog882
@mog882 6 жыл бұрын
Manoj Philip They feel that way as well.
@MrMunchbunch83
@MrMunchbunch83 6 жыл бұрын
I'm British with a British accent and I'm an expert in fuck all!!!
@bigbrother9531
@bigbrother9531 6 жыл бұрын
Not me. All I gotta say is, name a ship disaster, then ask, who built her.
@bobconklin7159
@bobconklin7159 3 жыл бұрын
I was part of the commissioning crew of the USS Ronald Reagan CVN 76. We had tee shirts made that read, “ I’m Not Fat. It’s My Bulbous Bow.”
@bollockjohnson3706
@bollockjohnson3706 3 жыл бұрын
*I* too was on the commissioning crew of the USS Ronald Reagan CVN 76 and I am calling you out on your bovine excrement.
@TheGnarlyPigeon
@TheGnarlyPigeon 3 жыл бұрын
@@bollockjohnson3706 lol
@jtseafarer6871
@jtseafarer6871 3 жыл бұрын
I was also one of the dry dock crew of Ms Rotterdam I have pictures of bulbuos bow but on that time I don't what is the used of that bulb
@i_know_youre_right_but
@i_know_youre_right_but 2 жыл бұрын
Shite yank banter
@Coowallsky
@Coowallsky 6 ай бұрын
@@i_know_youre_right_but Seethe. Cope.
@Srgfowler
@Srgfowler 3 жыл бұрын
Never searched for anything revolving ships. But I still clicked
@MeteoricStoneofSouls
@MeteoricStoneofSouls 3 жыл бұрын
That's because Google knows what you want to see before you do.
@crs2385
@crs2385 6 жыл бұрын
0:42 ''Let's consider this vessel'' Me: TITANIC!
@notesl5576
@notesl5576 6 жыл бұрын
CRS Ikr it's clearly her..
@z0901
@z0901 6 жыл бұрын
It's so easy to see
@dylanhultman3922
@dylanhultman3922 6 жыл бұрын
CRS It could of easily been the Olympic. The Olympic classes all look the same.
@usmc5977
@usmc5977 6 жыл бұрын
Me too hahahhh
@prnothall9302
@prnothall9302 6 жыл бұрын
Dylan Hultman correctly, could HAVE been, or could’ve been. Could “Of “ been, is non- sensical. Just sayin’.
@danmcclaren5436
@danmcclaren5436 6 жыл бұрын
That’s actually pretty genius. “Hey let’s make a second set of waves ahead of the first that will cancel each other out”
@DrWhom
@DrWhom 5 жыл бұрын
Is the effectiveness a function of speed?
@fieldmarshal7298
@fieldmarshal7298 5 жыл бұрын
@@DrWhom yes
@RyanMcIntyre
@RyanMcIntyre 4 жыл бұрын
Same principle behind noise cancelation
@hyonker2134
@hyonker2134 4 жыл бұрын
I used the wave to destroy the wave
@DrDeuteron
@DrDeuteron 3 жыл бұрын
bow's passive cancelation. Not to be confused with Bose active cancelation. also it only has to cancel the wave along the hull, I mean somewhere out there, there might be a bigger wake.
@mcfly7613
@mcfly7613 4 жыл бұрын
A lot of this I already knew because I was a US Navy sailor but I’m still learning a lot from these videos, I’m glad I bumped into this channel. Well done.
@vulture3874
@vulture3874 3 жыл бұрын
I'm going to use the information in this video at parties. As an icebreaker.
@felixiathegoat3259
@felixiathegoat3259 3 жыл бұрын
Made me laugh out loud
@cindyzins6628
@cindyzins6628 3 жыл бұрын
Me too! (LOL, I mean)
@weppwebb2885
@weppwebb2885 3 жыл бұрын
Ironically icebreakers do not use bulbous bows as far as I know. Might want to try a spoonshaped bow for maximum effects. xD
@johnpatz8395
@johnpatz8395 3 жыл бұрын
That’s freaking horrible! I LOVE IT!
@abhi2349
@abhi2349 3 жыл бұрын
Lol.. I was already thinking about it !!😂😂
@sammynicholas
@sammynicholas 5 жыл бұрын
There is actually one more very important reason for the bulbous bow along with the wave canceling effect! A ship which moves considerably slow without the bulbous bow will create 70% more air bubbles than one with a bulbous bow, as well as the lack of wave counteracting effect, moreover the bubbles created by traditional bow gets push to the bottom of the hull which causes a loss of water pressure underneath the hull inturns less force pushing against hull, and decrease buoyancy, therefore the ship will sit lower in the water and create more drag and less hullage capability. on the other hand ships with bulbous bow, when the bow pushes against the water, it creates fewer air bubbles and the bubbles are mostly displaced to the side of hull, therefore, the hull will maintain its water displacement, less drag and what's even better is the air bubbles get push to the side of the hull making it less drag from the side of the hull resulting better fuel economy!
@aberamagold7509
@aberamagold7509 4 жыл бұрын
Did you just make that up? 😃 JK it was a very informative comment.
@chsemaphor
@chsemaphor 4 жыл бұрын
Lol
@sammynicholas
@sammynicholas 4 жыл бұрын
@@aberamagold7509In fact I tried it out on a few scaled models and in CAD fluid test and both supports this...
@robbiejosh6082
@robbiejosh6082 3 жыл бұрын
I don’t believe you
@BobSmith-cb5xr
@BobSmith-cb5xr 2 жыл бұрын
Sounds some some brilliant mark Twain shit I like to make up. Sounds good, but is it really true?
@killerta87
@killerta87 6 жыл бұрын
You know I've always wondered about the bump on the bow of a ship but never seemed to research it honestly. Stumbled across this video and honestly learned about it ha! Simplistic explanation and well laid out video makes it super easy to watch. Well done sir
@CasualNavigation
@CasualNavigation 6 жыл бұрын
Thanks killerta87
@williamthethespian
@williamthethespian 6 жыл бұрын
Excellent explanation. Thank you.
@CasualNavigation
@CasualNavigation 6 жыл бұрын
Thanks William! Glad you liked it.
@adamdickinson2894
@adamdickinson2894 3 жыл бұрын
1:37 "If we think back to mathematics." Me: * Vietnam-style flashbacks begin *
@tophan5146
@tophan5146 3 жыл бұрын
😂
@StratMatt777
@StratMatt777 4 жыл бұрын
Now I understand what the hull is going on! Thank you!
@kindnessmattersmost
@kindnessmattersmost 9 ай бұрын
Clever😂
@boatman222345
@boatman222345 4 жыл бұрын
Great explanation! I used to provide water taxi service to ship's agents servicing the cruise ship industry here in Maine. Twenty-five years ago these cruise ships generated huge waves in their wake. Today a 1,000' cruise ship produces a wake smaller than that produced by a 36' lobster boat largely due to these bulbs. And speaking of lobster boats, a local fisherman took a clue from the cruise ship industry and added a fiberglass bulb to the bow of his 45' boat. I've photographed it several times while the boat was tied up to the dock but have never had the chance to ask the owner if it has worked to reduce fuel consumption.
@scottboardman8070
@scottboardman8070 6 жыл бұрын
Wonderful explanation, in 4mins I feel like a smarter man!
@CasualNavigation
@CasualNavigation 6 жыл бұрын
Thanks Scott. Glad you liked it.
@patagualianmostly7437
@patagualianmostly7437 3 жыл бұрын
Is that not the whole reason for You Tube existing? Just a shame more don't use it.... after watching those of Jay Leno. Dear-oh-Dear. The billions wasted on education. It could actually fund a social health care programme........
@Dirckaw
@Dirckaw 4 жыл бұрын
Things that we spend whole day in studying, learnt in 4 minutes. Thanks!
@Robert-gg7ck
@Robert-gg7ck 4 жыл бұрын
Wanted to shout out the way you remind users to like videos without directly stating it, I and im sure many others appreciate your indirect approach
@Rincypoopoo
@Rincypoopoo 5 жыл бұрын
Brilliant. Short, neat , clear and interesting. Thank you.
@TheRealBoroNut
@TheRealBoroNut 5 жыл бұрын
Nonsense. It was designed by Airfix so you have somewhere to hold the model when you paint it, as any fule kno.
@honeydew5022
@honeydew5022 5 жыл бұрын
Haha
@NPCSN
@NPCSN 5 жыл бұрын
🤣😂
@beepthemeep12
@beepthemeep12 5 жыл бұрын
Lmao
@gormauslander
@gormauslander 4 жыл бұрын
And then the shipbuilders were like "oh heck, our ship isn't accurate to the model" and changed it
@kartikkalia01
@kartikkalia01 4 жыл бұрын
Thanks
@JackMayhoffer
@JackMayhoffer 3 жыл бұрын
I woke up with a bulbous bow this morning.
@fellowcomrade7357
@fellowcomrade7357 3 жыл бұрын
Nice
@peterrabbit2965
@peterrabbit2965 3 жыл бұрын
Nailed it
@woofowl2408
@woofowl2408 3 жыл бұрын
I hope you weren't put in a dry dock.
@manxman8008
@manxman8008 3 жыл бұрын
what was her name?
@fangospucklovesveena464
@fangospucklovesveena464 3 жыл бұрын
@@woofowl2408 wonder what that ol' Night Mate wuz doin'???
@braddixon3338
@braddixon3338 5 жыл бұрын
I've seen those many times and always wondered what they were for. I've heard anywhere from a forward weight to help hold the bow down, to breaking the waves before the bow has to hit them, but this is the first time I've heard about the destructive interference design, how cool!
@potawatomi100
@potawatomi100 Жыл бұрын
Outstanding explanation. I had to watch it again to refresh my memory. Well done!
@jduff59
@jduff59 4 жыл бұрын
I've lived this long not knowing what the bulbous bow was for, nor did I know why ships are painted red below the water line, and I've learned both in one night. Pure KZbin genius! Outstanding video, and not even one comment mentioning Ron Jeremy from the Peanut Gallery.!
@alecmagill5337
@alecmagill5337 5 жыл бұрын
“This first vessel” is clearly the Titantic
@irongoatrocky2343
@irongoatrocky2343 4 жыл бұрын
Full Speed Ahead!
@patagualianmostly7437
@patagualianmostly7437 3 жыл бұрын
Or...perhaps...one of her sister ships...which gave decades of service. Mmm?
@angelvillegas9604
@angelvillegas9604 3 жыл бұрын
@@patagualianmostly7437 Titanic
@ICUinthedark
@ICUinthedark 3 жыл бұрын
@@angelvillegas9604 nope not Titanic, there is no Jack and Kate on the top deck on the front...
@angelvillegas9604
@angelvillegas9604 3 жыл бұрын
@@ICUinthedark Jack's not real
@SinominStudios
@SinominStudios 5 жыл бұрын
When I was younger, my dad told me it was for ramming sharks
@iaffrayliillii704
@iaffrayliillii704 5 жыл бұрын
Lmao that made me laugh
@hiddenname8953
@hiddenname8953 5 жыл бұрын
Happy younger life...
@d3m3n70r
@d3m3n70r 5 жыл бұрын
Right. But it renders useless, when they already began to form a sharknado.
@certaindiaster59
@certaindiaster59 5 жыл бұрын
d3m3n70r lmao! Not the f-in sharknado!
@certaindiaster59
@certaindiaster59 5 жыл бұрын
It started off with only female sharks but eventually it changed to anything in the water and nothing was safe from then on...
@bikelifepov3755
@bikelifepov3755 5 жыл бұрын
I love when KZbin answers all my questions at 2am.
@AngelVazquez-xh1dh
@AngelVazquez-xh1dh 4 жыл бұрын
I went on exchange about 10 years ago... Lived a while in Finland... Traveled in Silja Line and Tallink, to Tallin and Stockholm... And also visited the Vasa Museum... I loved ships but never imagined I would end up studying naval Architecture as now ❤️
@anthonyo.thector32
@anthonyo.thector32 4 жыл бұрын
This video fulfills my daily quota for new things I learn. Thanks.
@ROK-dn5rm
@ROK-dn5rm 4 жыл бұрын
I was told that they were small rooms for radar sensors or something, I don't remember where I learnt that but this makes a whole lot more sense, you explained it very clearly.
@zo5679
@zo5679 Жыл бұрын
It true for the Arleigh Burke Class Destroyer and other military ship
@Malisti04
@Malisti04 5 жыл бұрын
All this time I thought it was for crushing ice. I learnt something new today. Thank you
@DeathByLego
@DeathByLego 3 жыл бұрын
There are some for crushing Ice! The have bigger, angled fronts to push the ships above the ice, then the weight breaks the ice!
@thatdude101ish
@thatdude101ish 3 жыл бұрын
@@DeathByLego dam! that was what i was going to say, ice breakers are very costly to run due to the flat hulls and the drag.
@DeathByLego
@DeathByLego 3 жыл бұрын
@@thatdude101ish have you seen the biggest Russian one?! It’s an absolute monster.
@AussieDad79
@AussieDad79 5 жыл бұрын
I had no idea I needed to know this but I’m glad I now do!!
@frazerguest2864
@frazerguest2864 4 жыл бұрын
Perfect video. Short, sweet, to the point with no waffle or bullshit. Thank you
@dobermanpac1064
@dobermanpac1064 4 жыл бұрын
Coming from a family of sailors for over 5 generations, I’m no expert, but I do know this.., The configurations belong the water line are the most critical when dealing with speed, handling and fuel/wind economy. It’s all about the math, not looks. Fabulous video.
@Stones_Throw
@Stones_Throw 5 жыл бұрын
I've just assumed forever that it was to add buoyancy to an area of the hull with the least. A great explanation.
@jalaluddinmorris2978
@jalaluddinmorris2978 4 жыл бұрын
... and by adding buoyancy it helps a ship do what it is meant to do - namely carry things.
@Allthingstech3108
@Allthingstech3108 6 жыл бұрын
This is called "destructive interference"
@Allthingstech3108
@Allthingstech3108 6 жыл бұрын
jon doe The phenomenon is called destructive interference it is an important phenomenon in the physics of waves.It is taught at 1 year college and senior classes in schools
@Perifroog
@Perifroog 6 жыл бұрын
jon doe Thats what it's called itself, but the effect it has is callef destructive interference
@Allthingstech3108
@Allthingstech3108 6 жыл бұрын
jon doe correction "gone to" instead of went to
@lelandlewis7207
@lelandlewis7207 5 жыл бұрын
Sounds like Tump's foreign policies. 😀
@wavehaven1
@wavehaven1 6 жыл бұрын
The bulbs were from WW2 submarines for their sonars, it just worked out for great unexpected advantages other than for sonars. Then so, the bulb design went to ship bows....thanks to the WW2 submarine.
@Shloomy_Shloms
@Shloomy_Shloms 6 жыл бұрын
wave haven A lot of ships in at least the US Navy still use the bulbous bow to house their sonar
@CasualNavigation
@CasualNavigation 6 жыл бұрын
A lot of merchant ships do to. It is a nice empty space right in the bow so is ideal for sonar
@DerSchwantz
@DerSchwantz 6 жыл бұрын
@@CasualNavigation are you crazy or do you not even know merchant vessels have no sonar. The bulb is a void with nothing in it. In some vessels it is common to the forepeak..commercial ships have a transducer for the depth sounder. It's a little bigger than a hockey puck and sits up forward.
@NPCSN
@NPCSN 5 жыл бұрын
I was actually wondering this exact thing (about subs and sonar) I was wondering if it was an accidental discovery. 😁 good stuff. :)
@mayuri4184
@mayuri4184 5 жыл бұрын
The Yamato had it too IIRC.
@pgVeritas
@pgVeritas 3 жыл бұрын
This is great thank you. I love learning about anything! I used to go out with a girl whose father was a naval architect. He made millions because he created a piece of software that predicted the rise in water levels. He wrote it in C+ years ago. He was actually an arse outside of that. When I started seeing her he Contacted my university to see if I really worked their and completed a PhD there. As I was really well known, and this is a very specialist small university, which only has PhDs or Masters, HR contacted me, laughing about it. He pretended that his company was offering me a job, so he broke every privacy rule around. He thought he was the only person in the world with a PhD from a world top ranked university.
@anthonyboyce8844
@anthonyboyce8844 3 жыл бұрын
You got a PhD?is English not your first language?
@Chimp_No_1
@Chimp_No_1 5 жыл бұрын
Your videos are always compelling. Thanks.
@HarpaxA
@HarpaxA 3 жыл бұрын
I would have guessed for two reason : 1. It's act like a bumper, to prevent the hull got damaged if it hit something 2. As sacrificial part, so it get eroded faster by the water, than the original bow section Thanks that I found this video 😅
@loritsi
@loritsi 2 жыл бұрын
i always thought it was for ramming in military applications
@jimtownsend7899
@jimtownsend7899 3 жыл бұрын
When I was young, I thought it was a sonar dome. Then I realized its true purpose. The first ship to have the bulbous bow was the S.S. Jimmy Durante.
@ember9361
@ember9361 2 жыл бұрын
Hm like a beluga whale :)
@b0bbuffet
@b0bbuffet 6 жыл бұрын
SILJA LINE!!!!🇫🇮🇫🇮🇫🇮🇫🇮 Suomi
@veewee4826
@veewee4826 5 жыл бұрын
PERKELE TORILLE SAATANA SILJA GALAXY
@kaiusylander1320
@kaiusylander1320 5 жыл бұрын
SUOMI PERKELE
@seal7216
@seal7216 5 жыл бұрын
Silja line o paras👍👍
@AngelVazquez-xh1dh
@AngelVazquez-xh1dh 4 жыл бұрын
I navigated in one of those ❤️
@Novel_Poe
@Novel_Poe 4 жыл бұрын
Have you Finnished
@jkl542
@jkl542 5 жыл бұрын
I really appreciate how you get right to the point from the start.
@pool-io4360
@pool-io4360 3 жыл бұрын
I always assumed it was to protect the ship from a front impact. But I never had a real answer and didn't even know what they where called. This makes alot more sence. Thank you!
@TheFlyingCougar
@TheFlyingCougar 5 жыл бұрын
KZbin: Hey you, we see you like to watch sitcom clips and funny animal videos. Now listen to this British guy explain the mechanics of cruise ships. Me: *ok*
@camkai1998
@camkai1998 4 жыл бұрын
I’m here a year after 😂😂
@andrewryan4417
@andrewryan4417 3 жыл бұрын
You too?
@andrewpaulhart
@andrewpaulhart 5 жыл бұрын
Subscribed to your channel recently. Really interesting to learn new things about an area that I’ve not really thought about at all before. Thanks
@YTomi26
@YTomi26 5 жыл бұрын
It sounds a bit weird to call it drag because we usually call it resistance. But i think it's to make the explanation understandable to those who didn't know Naval Architect. Great job!
@markgadsby5568
@markgadsby5568 Жыл бұрын
Resistance is normally a force directly opposing something whereas drag is friction along the sides
@samipkapadia1995
@samipkapadia1995 2 жыл бұрын
This is the first time i came across such an easy explanation. Thank you so much...
@Edsrandomthingschannel9295
@Edsrandomthingschannel9295 3 жыл бұрын
Cool and to the point video! I knew the bulbous bow helped ships sail more smoothly but until now didn't know the principle behind it. 🚢
@Espanyol_Espaghetti
@Espanyol_Espaghetti 6 жыл бұрын
To differentiate male ships from females..
@thickschmeat7560
@thickschmeat7560 6 жыл бұрын
there are only female ships cause if a male ship gets penetrated. Its gay
@ianwinfield929
@ianwinfield929 6 жыл бұрын
There’s only two genders
@MrEazyE357
@MrEazyE357 5 жыл бұрын
All ships are female.
@janchocruz1378
@janchocruz1378 5 жыл бұрын
@@MrEazyE357 why?
@SuperKiko112
@SuperKiko112 5 жыл бұрын
And gay ships ? How to differentiate them ?
@gb5776
@gb5776 5 жыл бұрын
It’s used for making baby tug boats that will someday grow up to be ships.
@alfredmorency8296
@alfredmorency8296 3 жыл бұрын
Tugs never get anywhere, they just hang-around their mother's harbor. you have to cleave some water to be a ship.
@rosethefirechieftess1683
@rosethefirechieftess1683 2 жыл бұрын
🤣
@NoaV2
@NoaV2 5 жыл бұрын
Thanks! I learn so much from your videos! Keep it up!
@MarkSmithSa
@MarkSmithSa 4 жыл бұрын
It also helps dampen pitching, albeit slightly. The sonar dome of T22 batch III frigates, which is a larger version of a bulbous bow, reduced slamming noticeably.
@jamofbob715
@jamofbob715 4 жыл бұрын
Videos like this are why I love KZbin
@abdulwaheedsayed5246
@abdulwaheedsayed5246 3 жыл бұрын
We can add one more function to the bulbous bow: to get stuck inside sand and prevent ship from moving
@theotherside931
@theotherside931 5 жыл бұрын
*I have wondered this for years. I suspected it had to do with waves but how exactly I didn't know. Thanks for making this video.*
@killingfields1424
@killingfields1424 5 жыл бұрын
Its there for the purpose of reducing drag and streamlining hydrodynamics. Plus it can alsi be used to RAM the hell those megalodon blocking the way
@rw2890
@rw2890 5 жыл бұрын
I love your videos, finally something to learn on the internet
@ACELog
@ACELog 3 жыл бұрын
Thanks for a concise informative video! First time in my 67 years I've now learnt this. As a former engineer, I like to translate things in to my way of thinking: "Bulbous Bow generates an antiphase waveform (great pun opportunity!) that cacels the normal bow wave".
@davidev4480
@davidev4480 5 жыл бұрын
wow EXCELLENT video. I am now your newest subscriber.
@davidev4480
@davidev4480 5 жыл бұрын
I also saw ur "why is it called a "bridge" video. Great stuff. Now just gotta catch up with ur other work
@davidev4480
@davidev4480 5 жыл бұрын
I also saw ur "why is it called a "bridge" video. Great stuff. Now just gotta catch up with ur other work
@elj6964
@elj6964 5 жыл бұрын
I am always thinking that it serves as a water break. Thank you for educating me
@justSTUMBLEDupon
@justSTUMBLEDupon 5 жыл бұрын
I learned something new today! The more you know 💫
@berlinupnorth982
@berlinupnorth982 4 жыл бұрын
I worked building Navy ships in Bath, Maine. Military ships often have their sonar in these forward bulbous bows to locate them far away from the ships internal noise.
@G-TagLuke
@G-TagLuke 4 жыл бұрын
Love your videos! short and to the point !great content
@bendepeel7846
@bendepeel7846 5 жыл бұрын
Just popped up in my suggestions thumbs up though!! You piqued my interest and now I know some thing I never knew that will probably serve me no purpose but I'll pull out one day like yah know what that thing does and explain
@RyanZNO
@RyanZNO 3 жыл бұрын
I live in the middle of the desert, why am I watching this at 1am...
@nxtchpforme9154
@nxtchpforme9154 3 жыл бұрын
Happy life??
@whenibecamethesun..8759
@whenibecamethesun..8759 6 жыл бұрын
You make it easy to understand..that is a very difficult thing to do...thanks
@CasualNavigation
@CasualNavigation 6 жыл бұрын
Thanks When I became the sun. Glad it was understandable.
@blujay2084
@blujay2084 3 жыл бұрын
Nice video. Clear and concise. Something I always wondered about. Thanks for posting.
@tongfoocheong8254
@tongfoocheong8254 2 жыл бұрын
I finally see a practical application of the sine and cosine waves taught in school years ago.
@zachlafleur6651
@zachlafleur6651 6 жыл бұрын
Nice job demonstrating this on an Olympic Class Liner from the White Star Line! If they only had this technology and knowledge over a hundred years ago that they do now (that and also safety equipment)?
@CasualNavigation
@CasualNavigation 6 жыл бұрын
Thanks Zach. Glad you liked it!
@dylanhultman3922
@dylanhultman3922 6 жыл бұрын
Zach LaFleur My first thought was “Is this the titanic?”
@ph89787
@ph89787 6 жыл бұрын
In which case. If Thomas Andrews can get the length of the bulb correct. Not only would Olympic, Titanic and Britannic be even more fuel efficient. The reduction of drag could raise their top speed by a few knots. Whether it would be as fast as the Lusitania and Mauritania, i don't know. But it would be close. Hell it would be even a great selling point for passengers.
@rimmipeepsicles1870
@rimmipeepsicles1870 5 жыл бұрын
@@ph89787 'cause what would passengers care about? Mostly luxury and speed. They would even retain the Blue Riband if they had bulbous bows for how many years, probably up to the inter-war period.
@vk2ig
@vk2ig 5 жыл бұрын
The increase in speed due to the reduced drag would only mean the RMS Titanic would've hit the iceberg at a higher speed and possibly done more damage so it might've sunk faster.
@potawatomi100
@potawatomi100 6 жыл бұрын
Really well done.
@CasualNavigation
@CasualNavigation 6 жыл бұрын
Thanks Reme
@craigkaschan4822
@craigkaschan4822 6 жыл бұрын
Yes always wondered what they were all about Thankyou
@CasualNavigation
@CasualNavigation 6 жыл бұрын
Thanks Craig. Glad to help out.
@jacebrogden3490
@jacebrogden3490 3 жыл бұрын
KZbin recommending answers to a question I didn’t know I needed the answer to
@grimbles39
@grimbles39 4 жыл бұрын
☑ no obnoxious music ☑ no cheesy jokes ☑ no trying to extend the video to 10 mins ☑ no extended history lesson ☑ no off-topics ☑ no sponsors ☑ no long intros
@thepsychosupersonicdiscopu4096
@thepsychosupersonicdiscopu4096 3 жыл бұрын
I was brought here because of the 3 seals chillin on the bulbous bow.
@popedassalxvi5375
@popedassalxvi5375 3 жыл бұрын
I guess what it was for after watching the clip at the start, feeling very smart right now
@SPE4RHE4DS
@SPE4RHE4DS 6 жыл бұрын
I've Actually seen Tallink or Silja Galaxy in real life when I visited Latvia, Beautiful ship.
@Janfey
@Janfey 4 жыл бұрын
I've been on it many times.
@ZucchiniSlayer
@ZucchiniSlayer 5 жыл бұрын
wish I wouldve found this channel sooner, very informative. Great Job.
@tedmulthauf7434
@tedmulthauf7434 3 жыл бұрын
Best explanation of this I have ever seen.
@Dawgs241
@Dawgs241 5 жыл бұрын
I'm trying to think, how can I use the information from this video to develop a pickup line at the club.
@rudlu_
@rudlu_ 5 жыл бұрын
Did you found out yet ? I'm interested
@Ernoskij
@Ernoskij 5 жыл бұрын
0:22 "looking at these different pictures, you can see the ships are all different sizes" he says while showing only the very tip of the ship with no reference point in the picture. It's not possible to judge the actual size of the ship solely from those pictures :)
@NPCSN
@NPCSN 5 жыл бұрын
🤣😂 I was thinking the same thing. Like: am I supposed to do the calculus and physics on the water amd guess the speed and extrapolate the size?... Uh... No... Just zoom out. 🤣😂 besides, i dont know how to do that crap anyways. Lmao
@hardanheavy
@hardanheavy 3 жыл бұрын
Of course it is. If you don't see it, you don't see it I guess ;)
@reifukaiyukikaze
@reifukaiyukikaze 6 жыл бұрын
Keep up....your channel is great!
@CasualNavigation
@CasualNavigation 6 жыл бұрын
Thanks reifukaiyukikaze!
@macnuggets887
@macnuggets887 4 жыл бұрын
0:11 is a Swedish/Estionian company and it cruises from Stockholm to Tallin.
@pihlajafox
@pihlajafox 2 жыл бұрын
Also Finland-Eesti and Finland-Sweden
@Эбэрёнэи
@Эбэрёнэи 2 жыл бұрын
i dont know how i got here but god this channel is good
@s.eashwar4894
@s.eashwar4894 5 жыл бұрын
0:02 How many have travelled the Silja Line 🙌 Hit like
@drServitis
@drServitis 6 жыл бұрын
I ALSO HAVE A 'BULBOUS BOW.'
@itsohaya4096
@itsohaya4096 4 жыл бұрын
I didn't know what that was, nor that this was a ship video, so here I was staring at the thumbnail having an existential crisis as my brain tries to dissect a single image.
@TheKurtsPlaceChannel
@TheKurtsPlaceChannel 4 жыл бұрын
Great video. Thanks for posting this. Have a nice day.
@tweaker1968
@tweaker1968 5 жыл бұрын
Thanks for this ... very informative!
@stevewaclo167
@stevewaclo167 5 жыл бұрын
I almost bailed out at “...lets think back to mathematics...” but pleased I stuck it out! 😀 Excellent explanation and it seems you have attracted quite a number of intelligent and observant comments as well. 👍👍👍
@vancelandry8314
@vancelandry8314 5 жыл бұрын
“As you can see, they’re all different sizes” that’s what she said.
@JorgeGonzalez-ut3pm
@JorgeGonzalez-ut3pm 4 жыл бұрын
Lol
@jduff59
@jduff59 4 жыл бұрын
At least it's not called a "bulbous member".
@boataxe4605
@boataxe4605 3 жыл бұрын
I was about to give you a like, but I saw that you have 69 so I’ll leave it alone.
@WineScrounger
@WineScrounger 6 жыл бұрын
Funny thing, I’d always wondered about this.
@davidmeare9616
@davidmeare9616 3 жыл бұрын
My understanding of this is that this mathematical explanation and then later development of the principles arose from the discovery that adding ramming bows to warships about a century ago had the surprising effect of increasing their speed capability.
@swankydog
@swankydog 3 жыл бұрын
Thank you for this Jimmy Durante explanation!
Why Enclosed Spaces Are So Dangerous? | Enclosed Space Entry
5:32
Casual Navigation
Рет қаралды 2,6 МЛН
Why Is The Bridge At The Back?
8:10
Casual Navigation
Рет қаралды 1 МЛН
Мен атып көрмегенмін ! | Qalam | 5 серия
25:41
Мясо вегана? 🧐 @Whatthefshow
01:01
История одного вокалиста
Рет қаралды 7 МЛН
Why Are Big Ships Faster Than Small Ships?
5:56
Casual Navigation
Рет қаралды 4 МЛН
Why are ships painted red below the waterline?
5:13
Casual Navigation
Рет қаралды 12 МЛН
Why Do Ships Have Flat Bottoms?
5:41
Casual Navigation
Рет қаралды 1,2 МЛН
They Just Fell Off?
8:24
Casual Navigation
Рет қаралды 752 М.
Why Are Bows That Shape?
7:22
Casual Navigation
Рет қаралды 3 МЛН
Why Weren't Two Anchors Enough?
11:34
Casual Navigation
Рет қаралды 424 М.
How Stabilisers Reduce A Ship's Roll
6:13
Casual Navigation
Рет қаралды 7 МЛН
Why Did Her Stern Vibrate So Much?
10:16
Casual Navigation
Рет қаралды 759 М.
What Happened To The Derbyshire?
7:32
Casual Navigation
Рет қаралды 1,3 МЛН
What happens after you flush the toilet on a cruise ship?
6:11
Casual Navigation
Рет қаралды 4,8 МЛН
Мен атып көрмегенмін ! | Qalam | 5 серия
25:41