would you want to talk about some of the odd ball boats like the IP24? it has a very unique shape that as far as i know is not seen on pretty much any boat. it would also be interesting to know why its good and bad to have such a strange hull shape, certainly its very hard to roll over and its pretty fast it also has a lot of space but it rides a bit rougher then other boats.
The trawler you show at 5.44 is it a round bottom? Is it possible to add sails to such a trawler, given its a displacement hull ? Did old frigates/brigades have keels? Do you have any suggestions for books on trawlers like 5.44? Do Monohulls have keels?
7:50 I didn't think about the docking part & didn't know that a mono-haul paid less because of "trailering" it versus a multi-haul. Is it because of the classification and/or the size envelope? Lastly, does this apply to all other docks around the world?
When I was in college I built a steel boat . The front was a International pickup hood. the rest of the boat was two slightly rounded bottom. It was 14 ft & had a 12 hp ob. It was slow until coming up on plane . But quite stable.
Hello.. I'm about to purchase a Picton159GTS Speedboat .. i will be using it as a fishing boat 8n Jamaican waters with a 40HP out board engine. What's your view when it comes to stability in rough seas?
Never. The energy required to get that large a hull up on plane would be HUGE. it would kill the efficiency the makes container ships as popular as they are. Also, being on plane, in the open ocean would beat the snot out of the ship, the cargo, and the crew.
Very interesting video my friend. The blue catamaran at 6:46 is a creel/potter boat. A fishing boat that drops pots into the sea to catch lobsters, crabs etc. You can tell from the hauling winch at the front, and the reinforced metal plate on the side to protect from the pot ropes as they are hauled aboard. My girlfriend has her own monohull creel boat. I hope that helps.
Flat bottomed are initially more stable then round bottomed. Round bottomed yachts are extrimely stable, as you said, not because of round hull shape (actually round hull shape is less stable, but beter for sliding through water), but because of ballast keel.
Could do a video on different bow and stern shapes as well as hull side angle to the water. I always loved the tumbelhome hull with the reverse rake bow as found on some older 19th century pretty dreadnought ships and the USS Zumwalt destroyer.
What do you mean when talking about stability, is it directional stability or upright stability? To me it seems directional, which of course is important, but isn't upright stability more (most) important🤔
Hi. I just recently came into your channel and I´m already hooked up. I don´t know your name, but, eventually I´ll find it out. After watching this episode, one question came to me and it is: How do you categorize those "boats" witch are very popular in south Florida (USA)? Those with the fan instead of a regular motor. I will look forward to your new videos. Cheers from NE patagonia, Argentina.
I'm trying to build an electric sail catamaran. maybe 50ft. what hull design would be good for that? Batteries will be heavy. I'd like to get a little on a plane, or am I wasting my time with that?
Thanks for the video man, I'm thinking of doing a fiberglass-poliester 8 ft sail boat. And the only thing I need it's a round bottom full keel plans. For the mold I will try to use cardboard with an aluminium ducktape (I saw on a video that fiber glass don't stick over it for some reason). What do you think about make the interior of the keel after the hull using some extruded polystyrene
So now I know a bit about different types of hulls and keels. I often saw these different hull types on boats out of the water,in yards, undergoing maintenance work and wondered why the hulls were different in different boat types, especially the catamarans to and pontoons....Now I have some idea why and what different types of keels and hulls are good for. Thank you for a very orderly presentation.
im here because i was wondering why sea planes have this sharp shape on the bottom like boats do, i see now its for generating lift to help the plane get up to speed, its very un aerodynamic tho so i wonder if a round bottomed sea plane could work
I may be wrong because I most frequently am but I do believe the Bente 39 and it’s sisters, the J-111 and it’s sisters and the POGO 12.5 and it’s sisters of sailboats (I’m sure there are more) do plane on the water offering less resistance once a certain speed it attained.
Thanks for pointing that out. I assumed there were semi-displacement sailboats out there but I didn't know any of them by name. I'll take a look at them and try to include them in the next video. Thanks again!
awesome video! Im creating a design challenge where students have to design a boat within certain dimensions and they compete with each other to see who can hold the most weights without tipping over, this gave me some more insight into boat designs thanks!
