Hull Types and Characteristics 

Very interesting, but for God’s sake write a script and stick to it, stop repeating yourself,

Ok, so the editing could be better. But this served me really well. Thanks for posting it, my friend! Cheers from south Brazil.

Great presentation, well explained and added to my knowledge, thank you. Can't wait to see what your content will look like in the future with some editing on the sound and the content.

VIEWER - LISTENER BEWARE!!! THERE ARE FLASHING SCREENS AND DANGEROUS VOLUME FLUCTUATIONS THROUGH THE VIDEO!!!

WTF, this started out so good and then the FLASHING screen and volume going up and down so much kinda sucked, but not too badly. THEN you started with the take 1, take 2, take 3 crap instead of taking the time to edit an otherwise good video. Thumbs down, sorry.

The volume needs to be normalized. At times the volume is low and at other times extremely LOUD!

pretty good presentation!! i'll admit i started watching it think it would be dull and dry (a topic about hulls, wooOOooo lol)... but actually you made the topic quite interesting and well presented/informative.. nice job! looking forward to future presentations! only criticism i could give is that the audio level jumps fairly dramatically, when switching from the 'in-person' footage to the presentation portions.. you may want to edit video using headphones, so you can see how much the volume jumps when you switch to the 'live' footage.. but for me, it's a minor complaint as the content makes up for this slight imperfection

Take one, take two, take three...? I though the first explanation of the flat bottom displacement hulls was fine!

thank you very much for the effort, it was a very good video, i really appreciate it.

The tug boat is not travelling at "hull speed". The common "definition" (it is a rule of thumb formula, not scientific per se, just based in science) is that at hull speed the second peak of the bow wave is at the stern of a boat. The second wave of the bow wave in the picture is almost at the center of the boat. If that tug boat is 25 meters long (82 feet) it is probably running at 8 knots. The "hull speed" would be 12 knots.

You seem to harp on the fact that it's harder to make a Semi-displacement hull because of curves .. You are wrong, you are talking about construction techniques and to indicate that Steel is on the material used in boat making is miss-leading - hence your insistence that curves are harder to make - but most boats are made from Fiberglass or bent Aluminum.

That was sexy! Love the voice and your knowledge, your🤔 editing needed help.... but what the hey. I liked it!!!🤓

Hi there, I'm trying to design a a hull for my own little project. Could you perhaps answer some of my questions? I'm trying to design a small boat (4,10 meters of length (that's around like 14 foot?)) on which I can sleep (2 people in total, 1 on each side) and it will be propelled by a foot-powered prop... My questions are: - Should I go for a displacement hull or semi-displacement hull? - Should I try to make it less deep and a bit wider, to make it more stable when I step up on the sides? - Should I go for a round hull or a v-shaped hull? Or a combi of those? I don't have to reach very high speeds, although I'd rather do than don't. What do you think?

Good presentation but needs the audio updated to remove unwanted recording takes.

Sorry, mate. I'll check in later when you've got your production values under control. Just about busted my eardrums at the volume change at 8:45. Ouch! Then your voiceover dropped backed to nearly imperceptible. Had you subscribed, but then...sorry.

Thanks for taking the time, useful information.

when watching this video, i kept thinking that a catamaran hull would have been a better option when looking at the crane barge, rescue vessle or pilot boat?

Enjoyed watching and listening. Like a mate giving me the “heads up!”

No excuse for posting unedited videos these days. Editing is just too easy to do. Otherwise informative video so thanks anyway.

This is a great video, so well explained and for showing examples of the different hull shapes is really interesting and educational. Thank you.

4:00 That is very interesting, I never thought of it but ofcourse you loose buoyancy with the bowwave

great vid however my skiff planes with 13 hp. I had a smaller one that planed on 5.5 hp. homebuilt just saying not meaning anything by it.

Useful and interesting video, but I suggest you go through and delete the out-takes. I bit of editing of the sound levels would be good too.

Thank you very much.. You explained very clearly how hulls work. I was wondering would installing chines to the back of my 30ft round hull reduce roll and also would it help increase top speed?

Excelent and very informative video. Thank you very much

Thanks for the video! Very good introduction

THIS IS GREAT HOW CAN I GET SOFT WARE ON THIS FOR MY MARINE ENGINEERING STUDENTS. I LOVE THIS.

Excellent video even in 2022

How a ropax catamaran hull must look like?

Great introduction to hull designs. Thank you for posting so we all can learn a bit more about our fun, floaty machines!

8:06 EPILEPSY WARNING

Like it

Thanks for this video - this is exactly what i was looking for!

great informative video, good job pointing out constuction cost advantags

Interesting stuff,. Great content, thankyou.

Thank you for this, I'm introducing students to ship design and this helps a lot.

My vessel has a flat hull all the way through, It's literally a box that comes from a pointed bow (with bulb) and then quickly widens to a box all the way back. It tapers from 1.2m depth at the bow to 3.5m depth at the stern but is box shaped the whole way. Its a great sea boat and before I bought it, it would be actively fishing (laying longline) in 60 knots at 50degrees south in the Pacific Ocean, BEAM ON! However in this lecture I dont see any description of the characteristics of this hull type. Is there somewhere I can learn more about this shape? Thanks!

Great Video! Very understandable! Thumb up!

Very professional video. Not.

X bow in heavy seas

What brand boat is that 16:00?

Thank you very much for making this video. I am trying to learn more about hull shapes because I am a surfboard designer.

I had to watch this at 1.5x speed

Excellent, concise video on the basic types of boat hulls and hull design.

Write a script, read it a few times, then...record

informative but boring. Audio quality very poor.

thanks for explaining everything so clearly

1.5x speed

can this be applied to women as well?

Is it called a "chime" ?

Awesome video! At 16:15 what is the approximate dead rise angle of the stern of the USCG vessel, and what is the approximate deadrise of the front of the bow?

The best & new hull shape is the small waterplane area twin hulls, ocean vessel(SWATH). The hulls ride beneath the surface of the ocean. Then a platform is built high on top of these two tubular shaped underwater hulls. The platform is attached to the hulls below by hydrodynamic shaped hollow columns, to cut through the water easier. One on each corner of the the platform, & sometimes even a third column in the middle of the forward & aft columns, making six columns in all. Depending on heavy the platform is, in accordance to how big & buoyant the hydrodynamic shaped tubular hulls are, the underwater torpedo shaped hulls usually, are 3 ft to 6ft beneath the surface of the water & hold the engine & fuel tank inside them along with a rudder attached at the rear of each hull. There are usually horizontal stabilizers that attache the hulls at the front & rear, to keep the platform from rocking side to side. There are also what are called chine runners, which are stabilizers attached to the outer side of each hull, that run the entire length of the torpedo shaped underwater hulls to keep the platform from from going up & down length wise. So these SWATH vessels are very stable, to say least. The platform on these vessels usually rides about 10ft or higher above the surface of the ocean to avoid choppy water surface or huge waves, when the seas get rough. I'm also sure in the future these boat & ships will be able to raise & lower the platform of the vessel according to wave heights similar to offshore jackup oil platform drilling Rigs. They can also make entire semi-submersible boats & ships, similar to submarines, but with a hydrodynamicly shaped tower like cabin attached to the submersible vessels to steer & control the vessel from. Ocean going vessels no longer to to ride on the surface of the rough oceans or even the rolling seas. Technology has surpassed this old way of traveling on the oceans, seas, gulfs, bays & lakes in general.

you didn't mention hydro foils.

Thank you for posting this video. Very informative.

Interesting until I couldn't take the narrative smacks, damn annoying.

Could you Tic one more time with your tongue. How obnoxious.

I think I got rick rolled man haha