How Ships Convert Sea Water to Fresh Water | Chief MAKOi Study Call Ep 04

Have you ever wondered where ships get their fresh water supply? Well, it comes from sea water. Ships convert it to fresh water by means of...
Chief MAKOi
Study Call Ep 04

[@ChiefMAKOi]

Hi guys! I'm still stuck at home due to travel restrictions brought about by the pandemic. I'll be doing these lecture videos for the meantime for those of you who are interested in learning a bit about the technical aspect of seafaring. We'll get back to regular programming once things get sorted out. Thanks and enjoy!

[@MegaGeorge1948]

Hi Chief Makoi. What keeps the salinometer calibrated for accuracy to keep the fresh water under 10 PPM? What if it goes out of calibration during operation? Does someone test the water to see if it drinkable?

[@ChiefMAKOi]

Usually we just replace it if it starts acting up. In any case, as long as it doesn't deviate too much, it won't pose too much of an issue. There's a few more processes before the water becomes drinkable.

[@diabet3]

Hi Chief, which part of the distillation process where the solids are discarded? Or is there a practical use of the minerals that are left behind?

[@Vanha21]

​@@diabet3 The eductor what makes a vacuum, also suck those particles out of the system.

[@pittypatterputzzler5311]

Why are seaman confined to there cabin even after 14 days? I heard some are for 60 days stuck in there cabins.

[@jayvie-maeexamen5311]

This is how online teaching should be done😶

[@DavidGarcia-fh1gl]

RTTTTTTTTTTTTTT

[@johnrelalvarez5891]

Agree to this👍

[@miguelcabrales6388]

I agree

[@nareshkteja1895]

😂😂😂🤣💖 Honestly

[@acaholdings4493]

I agree totally

[@aulakh31]

Dear Chief Makoi, I only discovered you as a KZbinr after the EVER GIVEN incident, but I have been very deeply impressed with your posts since then. And believe me, I have seen a lot of 'em ! I have been a Master Mariner (in command) for nearly 28 years, and voluntarily retired from sailing with Wilhelmsen in 2017 once I turned 60. However, this is the very first time that I have come across a site like yours. Extremely informative, straightforward, and completely free of all bullshit. I congratulate you, Sir, and wish you more power in your future endeavours. My only regret is that I did not get a chance to sail with you. You have a diehard fan in India !

[@ke6gwf]

As a former commercial boiler technician, I approve of this video!

[@abdullaalhamid5621]

first of all thanks to chief, as a boiler technicain my question is to you, is it possible to use thia as a methanol distinction system. methanol boiling point is 60 degree.

[@ke6gwf]

@@abdullaalhamid5621 sure, if you modify it enough, clean it out really good and control the temperatures correctly lol

[@bunakkaptan]

I am 78 years young private motoryacht owner and captain. Excellent speech, excellent video...! BRAVO Chief MAKOI !

[@urjealousguy]

Chief, first of all I appreciate what you're doing for giving us mariners "free training". I went to PMMA myself class 85, deck side. Right after academy I was fortunate to be enlisted in the US Navy and worked as an electrician. After the Navy, I applied as a marine electrician thru Seafarer's International Union of America (SIU). I became an Unlicensed Junior Engineer. After having 1,008 days seatime, I was able to take the 3rd Engineer exam given by the US Coast Guard. Your training videos help me a lot in understanding the engineering plant. It enhances my knowledge to be able to perform my job as an engineer. Knowledge is power, indeed. I'm sure many aspiring mariners benefit from sharing your knowledge. Thank you.

[@melusimazibuko1665]

Hey guys!, I'm willing to work or travel by ship.the problem I'm scared of oceans and seas, since I saw titanic movie. I ,m playing cowardice.

[@robertomanalo6346]

The PMMAers Now only good theory but actually work initiative theres nothing to relay with these kind of Engineers from the PMMAers

[@annieblumentritt9518]

@@robertomanalo6346 lol chief makoi is from pmma

[@barkingdoggai]

At the age of 89, I’m proof that one is never too old to get additional knowledge.

[@dd_ranchtexas4501]

Barking Doggai: Amen to that Sir. A retired engineer, I was well acquainted with the theory, but the details of how it is actually implemented is quite interesting to me. As you say never, ever too old to learn. Hang in there! Being 78, you give me hope!!.

[@rock3tcatU233]

Age is just a number.

[@marialuisalottero5626]

I'm a teacher of a Italian miritime school and I thank you a lot! Your tutorial are very helpfull for my lessons

[@graydude]

Top notch Chief. Your graphics and editing are truly professional. As a former Navy snipe, you did an excellent job of explaining the process. I learned quite a bit. Keep up the great work! Us former snipes that spend all our time on the beach really look forward to your videos.

[@ChiefMAKOi]

Thanks Todd!

[@ivancerritos]

Chief. Apreciate your effort by doing these videos to teach us something new for some of us. Thanks. Great info.

[@alexanderbordeau7417]

I was stationed aboard a US Navy repair ship as a machinist mate and worked in the engine room. My ship had a consolidated engineering plant (boilers & turbines) in the same space. We had two triple effect evaporators that used 250 psi superheated steam and could produce 72,000 gallons of fresh water in 24 hours @ .025 ppm. our potable water was the same purity. Our boiler feed water was treated with a corrosion inhibitor and was stored separately. I've been watching your channel a lot. We had 550 officers and enlisted with 50 men assigned to the engine room. Thank you.

[@firenycamazon8563]

Fantastic! As an educator myself, I've gotta say bro, this class was on point! 'Nuff respect! Thank you, Chief!

[@yenmayuga2165]

Thanks sir! Actually I am working as a HR in a company but this kind of topics are very interesting to learn. Haha ewan ko ba!

[@marvingunda6887]

Isa po yan ma'am sa mga "nice to know" topic about seafaring. To be specifically, sa pagiging Marine Engineer😎

[@jaydave1246]

I have to be honest, this is actually my first time hearing about ships converting salt onto fresh water. I thought they resupply on port and comeback to port if the water has gone to minimum. This is very informative, thank you!

[@nikowaqaisavou9371]

Same with me,

[@roblamb8327]

Likewise. As an inveterate landlubber I'd never given any thought to this! After all, why should I? But, now that you mention it, it makes sense. I thought it'd be just simple distillation - at least until you introduced the complications. Nice simple presentation. I like that. I (more than) suspect you've glossed over a lot of the really tricky bits but this is a marvellous introduction and one that I could see being adapted for smallscale onshore usage under certain circumstances Thanks. Subscribed.

[@brenchomsky3515]

Filipino Marine Engineers are smart engineers.

[@juliusedzelbacaron3347]

Thank you sir chief for this video it can help us very much . Godbless sir

[@cheesywheeler8322]

I would have love to have a teacher like you back in the day

[@snakebait5118]

Chief, thanks for your educational video! My wife and I were just discussing this then I found your video! I knew there was a desalination plant on ships but didn't know how they work. Keep the great vids coming!

[@chrispeoples4606]

Chief, another great video for my high school physics classes, I'll use it with my thermodynamics unit. I especially like how you 'snuck upon' how to boil water below 100°C , using an eductor to lower the ambient pressure at the condenser, classic use of an descrepant event to understand why. That's what makes for good teaching! If your travels bring you to southern California, my classroom is open for you to visit! Chris Peoples

[@universeobserver7318]

I was a machinist mate stationed on a steam powered navy guided missile cruiser. We had 1 distilling plant in each engineroom and used 600 psi steam to power our distilling plants. It was a 2 stage plant that made 500 gallons an hour with less than .01% salinity. Our plants had insulation on them to retain heat. Awesome Videos Chief Makoi!

[@ramishrambarran3998]

Excellent tutorial ! Thank you. I worked in an Oil Refinery for 41 years, where fresh water recovery is very important in refining, as chemicals and processes in making water fit to make steam (Boiler Feed Water) are very expensive. All refineries use massive amounts of steam.. As in what you show us also, we tried to recover as much waste heat as possible. Best Regards. Trinidad & Tobago.

[@predoscica]

Don't you reuse stream condensate?

[@ramishrambarran3998]

@@predoscica Yes we did, but there are losses that are unavoidable........leaks, sour condensates, hard boiler blowdowns, small reciprocating pump exhausts, etc.

[@freakinbox]

I can't get over how informative and interesting this was! Well done!!!!!! You may have missed your calling as an educator.

[@chrissmith6133]

🙏Thank you Chief Makoi for the time you spend composing your videos. Stay safe to you and yours,,🙏🙏🐟🌶🌱🌿🧄🍤🌮👍🥂

[@crisvalbation3135]

Thank you chief so thankful to your tutorial.😉 God bless! Sana makasakay kana uli.

[@amoghbarve2266]

I am not voyager but your vlogs have been major reason why I started developing interest in Marine Engineering.You guys are doing amazing job , keep up the good work.God bless everyone.

[@findthebadger418]

I’m studying at maritime school currently - unbelievable how helpful these are. Just go secure my knowledge!

[@Mackie99]

Hi sir 3rd year napo ako this year BSMAR-E po ako Salamat lo sa vid mo may natutunan ako sa distillation Sana marami kapa mae upload

[@gilgillenwater5910]

Man, I love your channel. You started talking about the combined gas law and my ears perked up... I'm a critical care paramedic and have to know these laws for ventilator patients. Never really thought about their application outside of a medical environment and I was glued to the screen! I hope you're back on the waves by now, now that the pretendemic is losing steam.

[@WeSixKings]

I'm a bit late, but I enjoyed the vid, Chief! I worked on a 3 stage EVAP unit which used stream from our 125 psi boiler to create the vacuum. It was a ballet style juggling act to keep the two running in harmony (the boiler and the evaporator). The USN had given us parts from a Yugo expecting us to make them work like a Cadillac... 😎. Lots of good memories that I wouldn't trade for the world. Thanks again, Chief. P.s. if you ever stop in Guam, hit me up👍🏽

[@dfgndfghdfghdfgh]

Your production quality is so high now, so different to when I was watching your videos a year or so ago. Great job

[@MrAli171]

Brilliant video and so clear and concise and so helpful for young cadets.

[@ightwoman]

I sailed for six years with the US Merchant Marine, but I was deck crew and had no clue idea how fresh water was generated. This was a fascinating introduction to what is at it's base a simple process, but is phenomenally complicated in truth. It has been 50 years since I felt a rolling deck under my feet, and truth be known I miss it a lot. Thank you so much for providing us for such a deep dive into fresh water generating systems.

[@Bill_N_ATX]

Thanks Chief! Much appreciated. Enjoy the time home with your family and be happy you aren’t stuck on a contract far from home. You have to feel for those sailors. Or the guys on the cruise ships, where the company has canceled their contracts and paid them off but they can’t leave the ship. I’m grateful to be home and so far safe. Best to you and your family.

[@lpd1snipe]

Great channel. When I was an BT Engineer in the Navy 45+ years ago we used steam evaporators. When I went in Merchant Marine we used Alpha Laval units under vacuum but we weren't supplying a 520 man Navy crew and Boilers/Steam plant.

[@garypellerin5576]

Your production value continues to improve. This video could be used at any academy's engineering department as a lecture.

[@crisjumao-asjr.3941]

Chief Makoi kahit hindi ako marine engineer or related sa marine. Nanonood talaga ako sa vids mo dahil very informative tas ganda ng boses mo pakinggan.

[@ronaldb9]

Chief Makoi great vid,thank you

[@cawa2576]

That was very interesting. Since I work on swimming pools. We work with venturis and pumps. Yet we use the salt to produce chlorine through electrolysis.

[@lucascaldas3527]

Im a marine engineer from brazil! Anxious for the next class..please dont take too long!

[@eyyjeff2318]

Worth it ang 10 minutes chief. Very educational 👍

[@MohammedAbdullahi.]

A day watching your videos is better than a thousand days onboard with my current crew onboard lol.

[@silviobridi3994]

Excellent, difficult topic explained in a Couple of minutes. Congratulations!

[@PinoySeamanTv]

What An Excellent Presentation Sir Chief. StaySafe.

[@vitalijsidl8672]

Very good teacher ! He coming to details 2 times ,easy to understand. He can work in university.

[@longfordboy2538]

Chief,! This is superb. Retire and start teaching You are a natural ,,! Many thanks

[@surajmohanty9278]

Love from INDIA sir... Keep going

[@kevincrosby1760]

One of the first tasks I learned after reporting aboard my first US Navy ship was how to clean salinity cells (salinometer sensor). This was a common task, as we had them to monitor water quality for both Auxiliary (fresh water) and Propulsion (boiler feed and condensate monitoring). Obviously, I was stationed on a ship old enough to have a 600-PSI steam turbine propulsion plant. Will you eventually be covering the additional treatment required to make the distilled water from the evaps safe for human consumption? Filtering, chlorine/bromine/UV, mineral replacement, etc.?

[@ChiefMAKOi]

Yes. It will be discussed in an upcoming episode.

[@kevincrosby1760]

@@ChiefMAKOi Awesome. Thanks!

[@johnhighway9397]

pure 0ppm distilled water is already the safest water you can consume. The moment you start adding crap to it, you simply ruin it. Minerals are not needed in the water, since you get more than enough from your daily meals.

[@brucenadams1]

@@johnhighway9397 I was on the USS Brush (DD-745). I was the Comm Officer, but cross trained in engineering. Do you remember where the fresh water holding tanks were?

[@graydude]

Kevin Crosby 600 lb steam would have been nice! My boat, commissioned in 1957 as an LSD was 465 lb pressure!

[@arielleblond6201]

You're a great guy. Everything is so simple with you. God bless you.

[@kpdvw]

Salamat Herr Professor Makoi!

[@bouguerraabboud3504]

Its a good initiative from u thank you so much Engineer it's so great from you to explain how do every equipment work like pumps separators ... You here in this course give a #professional #experienced #lessons #not #an #academic #ones (like what you will finde as difficulties as a beginer engineer ..for example: in the Cooling circuits what are the frequent problems and what do you advice to handle with it ..not just how do it work ) Also I requeste you to do a parallel courses about #steam #propulsion #systems with the diesel ones Thank you chef

[@WestVirginiaRailfan]

Fantastic video, and very informative! Thank you, Chief!!

[@ChiefMAKOi]

Glad you liked it!

[@aarrssss]

Sir Chief . Salamat po ng malaki may bagong natutunan nanaman ako. Engine Cadet po ako. Gusto ko talaga manoud ng ganito sago sir salamat sa kaalaman na ibinabahagi mo ☺. God bless po . Keep safe

[@MusicLife-zf7et]

Thank you chief makoi. Malaking tulong po to sa aming mga Marine Engineering students from Cebu po. God bless you po 😇

[@dudedokduk3697]

why I'm watching this? after the Suez canal ship I'm getting recommended this vid😁. I'm sure suddenly you have more views. 🤔

[@noelgriffin645]

Me too. Great site.

[@uelbars9297]

Thanks chief makio for sharing you knowledge to us its a big help for me as a 2nd yr BSMAR-E student❣️ stay safe and god bless you at all the time sir🙏🏻❤️

[@CarlosPestonit]

Hi ... I'm glad to see you on this very instructive channel for seafarers

[@kelvinkithi9452]

Chief makoi nice one 🤜

[@CG0820]

Thanks chief. Naka pagrefresh tuloy ako ng Thermodynamics.

[@flankerchan]

believe it or not.. this is my first question when i watched your video for the first time X3

[@life_xplorer]

Sir sir sir. Thanx sir I am from India and sir I am a electrical cadet . I saw yr all videos.... Nd salute to yr effort.. this is outsating effort of video editing nd u are the best marine teacher in this word. U prove yrself by this video. There are planty of videos for life at sea. But not of technical videos... I am requesting u to make this kind of videos. Love u sir ...God gives you 115 years of long life... U are the best... U can mention my name on yr channel I feel glad.. nd I request u to make 1000 videos for technical side nd Technicial defect... Love u sir nd love yr kindness nd effort

[@enesberkegonten5269]

Hello, I am a marine engineering student from Turkiye. Thank you for this educational episode and super clear English accent. Regards.

[@davidknows3320]

Excellent description. I worked with distillation plants in the Navy. They were 1950's era two stage flash type 12,000 gallon per day. Old tech, left over in a newer ship, but worked exactly the same. Thanks for making these videos, they are very enjoyable.

[@fredsasse9973]

Been there too! Loooong time ago. USS Kirk (FF-1087) & USS Hepburn (FF-1055). I remember having to double check the accuracy of the salinometers by putting a reagent in a measured sample of potable water then titrating another reagent in the sample and counting the drops needed to affect a color change to indicate salt content.

[@edensgeffrard4944]

Thanks for this understanding vidéo now I know by you, how they bring the fresh water on the boat thank you again... We still satay for the pandemic go away... Thankx...

[@ColKorn1965]

I got to see the fresh water distillation system on the museum ship, USS North Carolina during one of the special educational tours last year. When I read that her sister ship, USS Washington used 45,000 gallons in one day during operations in WW2 (extreme high end of the spectrum) I was amazed.

[@emmanuelbillanesjr9229]

Thank you chief👍 I hope more educational videos, like this to come... keep safe GODBLESS..

[@fractode]

Chief Makoi's videos are among the most informative on KZbin. Thanks for another great one, Chief!

[@SK.The-Machine-Designer]

At 5:06 I was thought exact the vacuum boiling! But the engine jacket water using was very clever idea then for vacuum creation eductor nozzle method was also good

[@cameroncairns2712]

Hey Chief, thanks for the videos. It's a great reminder when I'm still waiting for my first trip as a qualified EOOW. Out of interest, does the type of generator you used in the video have vacuum breaker nozzles? And why do we need to open them when the plant is shut down? And I'd definitely be interested in seeing a video on seawater/HT water treatment. Thanks again!

[@ToughZygian]

salamat po sir chief, waiting po s videos. although seaman vlogger din ako panoorin ko parin yan,,,

[@puppylinuxer]

This is wonderful teaching Thanks Chief Makoi

[@VRtechman]

This is cool to learn about just cause, when we develop Space Faring ships I betcha we'll get water in much the same way. Recently Space Science has proven theirs more water in open space than we ever thought!

[@charlesn787]

Yes and with water we can have unlimited supply of oxygen for space travel.

[@jonahansen]

Your videos are great! Well thought out, informative, and well narrated. Don't stop! I've learned a lot.

[@joelbernardo4120]

Thanks Chief Makoi. 😊

[@christophercaparas7329]

Chief makoi, I am not inclined into seafaring but I really enjoyed all your videos. Thanks so much.

[@pramodmohite3220]

I had this question since long time

[@mikeserrano734]

Me too!

[@chandranilkarkhanis8342]

Me too also

[@Trey4x4]

Lmfao

[@DamonMcEwan]

Spent my 14 years at sea steaming Caird & Rainer, 2 stage flash evaporators. 2 tons per day perhaps....starting them was an art. Gas turbine propulsion with 8 bar LP Sat steam auxillary boilers to feed the evaps and lub oil heaters.

[@antonioreyes7476]

Hi Chief, it's my first time to watch your video. Wow excellent, 10 minutes of loaded information. I gave you A+, the content, the delivery, the visual animation are all superb. You just earn a new fan subscriber. The best of all is I found that you are a Filipino, my kababayan. I am proud of you chief, you are a world class. Keep it up.

[@imageandvalue]

Great Makoi. Really I learned a lesson today. Thank you very much.

[@keithatkinson6141]

back in the 1980s most of the ships that I worked on used vacuum distillers

[@umvhu]

My guess is that distillation in an engined ship is more energy effecient than reverse osmosis, which is more popular on sailing vessels.

[@gglovato]

Also iirc reverse osmosis needs "consumable" cartridges/mediums, so essentially it generates waste, whilst these distillation plants are all vessels and tubes which can be scrubbed/cleaned

[@aleksandersuur9475]

It's less energy efficient, however waste heat from engine cooling is is a cost you have already paid for regardless of if you are going to use it or not. But you can't run a reverse osmosis plant off of that, reverse osmosis plant requires a strong pump which would one way or another be an additional fuel cost.

[@fredbach6039]

I'm an old fellow long retired from dealing with ultra pure water systems and heat exchangers deionizer scrubbers and conductivity meters. We have a small water still but we accepted condensate water from a power plant by the truckload and scrubbed it further for our ultra pure systems. We had to make sure we didn't scrub it too much cuz otherwise the water got too hungry for minerals and ate the elbows out of copper pipe systems. All land based work. Nevertheless I actually learned a lot from this video. Thank you so much!

[@williamtsui7382]

Thanks, Chief Makoi

[@stewartalbert3523]

Great explanation of a vacuum distillation unit ! Did you ever think of making rum in one ?

[@ChiefMAKOi]

🤣

[@nikowaqaisavou9371]

I can't understand people who dislike this video.

[@riotakodama6879]

Terima kasih chief, karena video penjelasan dari anda. Saya bisa menyelesaikan revisi dari pak winarto edi sebagai dosen penguji saya. Arigato gozaimasu.

[@gabrielebrigatti]

wonderful video chief thank you!

[@rustarus6117]

Hey Chief, I'm planning on some day becoming part of the engineering crew of a cargo ship... I was wondering if you had an email or something I could reach out to you with questions to help me get started? It'd help a lot

[@marcbasangan7802]

Go on surfing all His videos you will learn more.. Thanks

[@carlthor91]

Here is a reading list 'www.marineinsight.com/guidelines/top-7-important-websites-for-marine-engineers/' I am not an engineer, but it is a favourite interest of mine. Best wishes

[@chukwuemerie]

@HoboWild YOU MAY NOT HAVE HEARD THE WORDS "MENTOR AND MENTORSHIP". DON'T STOP HIM FROM ASKING QUESTIONS. MARINE ENGINEERING IS UNLIKE OTHER PROFESSIONS, YOU REALLY NEED A MENTOR OTHERWISE YOU WILL REGRET OR PASS THROUGH HELL. AM A MARINE OFFICER.

[@Josh_K01]

Fascinating, thank you Chief!!

[@jimmorris9073]

I am a landlubber very informative. Very good presentation. Thank you for putting this together. It’s great.

[@jeyarajasekars9414]

A perfect teacher...... Nice way of teaching....👍👍👍👍👌👌👌👌

[@hsbcgeoff]

Fascinating. Thank you Chief.

[@gregknipe8772]

as a life long ship spotter whenever possible, this show answers so many questions. and many questions I had not thought of yet. thank you very much!!

[@PaulieVavoom]

This is an excellent description of the freshwater making process!! Great job!!

[@acaholdings4493]

Thank you Chief Makoi for teaching me, I look forward to your lecture, you have made the hardest things simple and I can't thank you enough...I can proudly call u my lecturer

[@kennethmangyao4222]

Thank you for this video Chief MAKOi. God bless 😇

[@badjii5128]

Our discussion with Chief. Engineer Makoi is done. Sir, Thank you, Sir!

[@ChiefMAKOi]

You're welcome!

[@Craig1967]

Wow! I am truly impressed with your video about distilling sea water. Your knowledge is awesome. The visual aides were perfect. Everything you spoke about, especially the eductor and lowering the pressure in the chamber was 100% spot on. I have been watching your videos for the past couple of weeks, and I enjoy every one of them. You are showing me things that I would have never learned without your fantastic videos. I have a lot of respect for you, and please keep the great videos coming, and be safe.

[@CharlieDO94]

after watching this vid. I clicked the subscribe button. Very informative. thank you and Godbless !

[@rigminattanayake1884]

Well said and done thanks Chief you are great,Thank you and keep up the good work.

[@TheGnewb]

This was and is quite a delightful talk, thank you!

[@followme695]

simply good teacher. Thanks sir

[@royarauz9509]

Thank you so much for your complete and thorough explanations . The verbal, graphic and visual material is very thoughtful. Always looking for more explanations to be more efficient at work and yours fill that requirement and help me put that information together with the theoretical knowledge from all the relevant textbooks. Safe seas and contract on your next voyage . My thanks from Panamá .