Here's my view of flotation for my homebuilt boats, the why, the how and how to go about it. Boatbuilding Website: spirainternatio... Boat Building and Builders Facebook Group: / 935360056515962 Instagram: / spiraboats
Пікірлер: 51
@drumminsonlive9199 Жыл бұрын
All very good information. RIP Jeff you were a good man…
@ArtworkAnon Жыл бұрын
I’m so bummed I missed my opportunity to connect with Jeff. Rest in peace. ❤❤
@wocookie22772 жыл бұрын
RIP. Love the description of the dead head log. Go right through a steel hull even.
@darenleeper1644 Жыл бұрын
Yes he will be missed. Unfortunately I never purchased any of his plans.
@bjpollari3 жыл бұрын
Thank Jeff for your " Spira Boats "
@BE-zu6ov3 жыл бұрын
Once again, Jeff answered one of my many concerns again in another informative video. Thanks Jeff
@AndySjostrom3 жыл бұрын
As always Jeff great video. and thank you for explaining the logic behind floatation. I've considered building my own boat for a very long time. the down side for me is my boat I want to build is 15'X60' wide body narrows boat. finding a boat yard to rent the space to build from scratch as become quite the issue for me. everyone I've talked to says the same thing. If its already built and I need a haul out they have space. other wise they don't have time or space. and doing a backyard build for a boat that size isn't really a logical move in the right direction either.
@pakde8002 Жыл бұрын
One way to provide flotation while allowing the boat to dry out would be to attach the bench seats to the ribs in the floor and sides rather than attaching directly to the sides and bottom. My plan is to make a built in cooler in the middle of the addy section bench with two compartments on either side filled with two part expanding polyurethane foam. This should be plenty for up to a 20hp engine. Then again at the middle seat to compensate for the battery and again in the bow to compensate for the anchor and trolling motor. The area below and to the sides will have air flow so even with a bottom on the bench the hull will dry out. At most the bench might eventually rot because I plan to cover the top and sides with fiberglass but it can be replaced fairly easily if rotting becomes an issue. Sure wish I could run this by Jeff. RIP 🙏
@michaelperezlogisticalfish95223 жыл бұрын
Thanks Jeff your videos are very nice at really late hours
@ERone432 жыл бұрын
My boat mechanic recently gave me a big old spiel about foam taking on water and weighing tons. He said you’re better off using old 2 liter bottles (probably encased in boat foam) than just foam alone. Makes a ton of sense.
@darenleeper1644 Жыл бұрын
That's a good idea
@JeffreyDRein Жыл бұрын
Rest in peace, it looks like you passed away sometime in late 2021 early 2022 & someone has pirated your website since then. So sad, some people. Mr. Spiral you are/were an inspection to me
@jwnagy3 жыл бұрын
Jeff, I would like to request a video on your Deadrise boats....Tangier and Pokomoke.
@Chris-sf7ug3 жыл бұрын
Thanks for all these videos, they are really helping me out in making a decision. I'm 28 and have always canoed and kayak fished all my life, BWCA and some white water kayaking too. I've been wanting a little jon boat for the lakes out here in MO, I have a old Sea King/Clinton 7hp 2 stroke I inherited but know I want a 25hp for hitting the mighty mo. I don't feel comfortable with budgeting a new 25 with as much boat as I can get which would be a 1542 jon. I did a little research into building one which led me here and I feel much more comfortable in the prospect of building the 16' Garvey Dory and being able the get the boat I want with the engine to push it as well, without having to compromise. Hopefully I can make a winter project out of it soon. Kind regards, Chris St. Clair
@tjkid073 жыл бұрын
Lots of my builders use 25s on bigger boats including 19 and 20 footers, like: kzfaq.info/get/bejne/n7-UZcaG3NeWqmw.html
@BillSias-op7xw3 жыл бұрын
Getting pooped isn't fun, lol. My favorite is your drop ramp dory, the mini Higgins, only because I always wanted to take a motorcycle. Thanks!
@davidmackay23533 жыл бұрын
Thanks Jeff. Very very informative!
@TrevorsCrabs2 жыл бұрын
Thanks!! Great information!!!!
@drumminsonlive91993 жыл бұрын
You have answered all of my questions about flotation so my next query will be the tag that tells maximum horsepower and how much weight or people the boat can carry and is this tag even a requirement on a home built boat. So far I have learned just enough about it to really confuse me. Thanks Jeff I always enjoy your videos...
@tjkid073 жыл бұрын
I have other videos about those. Here's the one about loading: kzfaq.info/get/bejne/fq1nmtWKntfec30.html And this one is about the horsepower: kzfaq.info/get/bejne/eNulesehp6fFcnk.html
@drumminsonlive91993 жыл бұрын
@@tjkid07 Thank You Sir...
@pl7868 Жыл бұрын
Great talk and video Thx :)
@Eric..F3 жыл бұрын
Thank you Jeff!!! Very informative!
@Avgeek2683 жыл бұрын
Watched the entire video and I'll summarize for those who don't wanna watch the full video....TRUST THE DAMN BOAT Its Designed to work
@jwnagy3 жыл бұрын
I would also like to see a video explaining displacement as it relates to your designs.
@tjkid073 жыл бұрын
No problem. Here you go: kzfaq.info/get/bejne/fq1nmtWKntfec30.html
@jwnagy3 жыл бұрын
@@tjkid07 Thanks Jeff. I'm trying to figure out how I missed this one. 😁
@86OEd3 жыл бұрын
Excellent....thanks!
@bipedalhominid68152 жыл бұрын
Built and registered a homemade vessel. Not once did I have to show anyone floation or have it inspected by anyone.
@wavepropulsion13 жыл бұрын
Mr. Spira please, I had read a brief comment you did once in facebook about your system of navigation, I remember was simple and efficient. Can you do a video about? Thanks.
@tjkid073 жыл бұрын
I was planning to add a series on Seamnanship, Boat Safety and Simple Coastal Navication. I used to teach a class on it.
@wavepropulsion13 жыл бұрын
@@tjkid07 thank you, still watching your video about Brendan now. I was interested in currachs but I believe your modern dorys are the heirs now, because bouyancy and flat bottom.
@11bayrat3 жыл бұрын
I’m hopeful that you will do more videos or information on the 27 mullet skiff.how seaworthy/ Blue water add on s you may make it different.I would like to build a live aboard 27-28 ft for cruising.with outboard motor set up if possible.
@tjkid073 жыл бұрын
How seaworthy? If you're a experienced and careful skipper, extremely seaworthy. If you make bad skippering choices and have no idea what to do when things happen, then not so seaworthy. How's that? Where do you want to go? You said outboard, how big/fast? How much fuel? How much water do you think you could cross with how it is set up? Looking for an all weather boat or a fair weather boat?
@dinom263 Жыл бұрын
Thanks for the info much appreciated... I have a 22ft fibreglass boat that has wet foam... so if we remove and replace with air compartments only if water gets into one of these compartments how can we get the water to get to the back drain plugs?
@othername10002 жыл бұрын
I was in a small pontoon with a few people following the Branson Belle, on Table Rock Lake, the bow sunk to a depth where the front deck was awash. Once the pontoon backed off the Belle it returned to normal. What causes this?
@youpattube13 жыл бұрын
Earlier in the video you said that no matter what you do, water will get in and rot your framing (if you don't drain it out). But at the end of the video you were saying the best flotation is not foam, but trapped air. How can you trap air but not water ?
@tjkid073 жыл бұрын
Yes, you can trap water as well as air. Is this what you're asking? I was in general referring to water that comes in over the top, like splash and rain. If you puncture the hull in a boat with a sealed deck, the trapped air will supply your buoyancy and keep water from coming in very much. Is this what you're asking? Perhaps you can explain your question. When I was talking about trapping water, I wasn't talking about enough water to sink your boat, only (fresh water) moisture saturating the wood which WILL cause rot. I always recommend drain plugs to allow and water in the bilges to drain and allow the wood to dry out. Here's more on the insides: spirainternational.com/tipsandtricks/200601_finishing_the_insides.html
@mattevans-koch93533 жыл бұрын
Thank you Jeff for the information. Question: Do compartments with watertight hatches when used for storage of gear retain most of their buoyancy? I am looking at your 19' Alaskan Grands Bank Dory as a possible camp cruiser and would like to plan gear storage. Thank you for any advice.
@tjkid073 жыл бұрын
Yes, they retain all of their buoyancy, except if you poke a hole through them.
@mattevans-koch93533 жыл бұрын
@@tjkid07 Went ahead and ordered the plans for the Alaskan. Now to get started buying materials. Thank you for the quick reply. Take care.
@tjkid073 жыл бұрын
@@mattevans-koch9353 Thank you Matt, Please keep me posted on your progress.
@cornersc3 жыл бұрын
At 5:20 you say people think the boats "float higher" with flotation. What about a boat that is swamped (i.e. a small sailing dinghy that flipped and has been righted). Can you "float" the gunwales high enough that you can bail or pump out the boat? Thanks.
@tjkid073 жыл бұрын
If it is full of water? Yes, it will float higher as the flotation is trapping air underwater. If it is not full of water, it will not float higher, it will actually float slightly lower, since the flotation is not only air. I hope I understood your question.
@cornersc3 жыл бұрын
@@tjkid07 Exactly what I was looking for and what I assumed. Of course the trick is to raise it higher than the swell!
@cepaasch3 жыл бұрын
Commandants Publication=CMDTPUB.
@clayfullmer3 жыл бұрын
So is your recommendation for the flat bottom boats (no self bailing decks) to just have a drain plug at the back for when your done boating for the day or do you want a bilge pump near the stern too? Then ping pong balls for flotation? They burn pretty quick. kzfaq.info/get/bejne/mM2IjM-rsM2skpc.html I figure I would need around 4500 balls to get me over 305 lbs of net buoyant force for a 50 hp and 2 batteries. That above video is 5000 of them burning. No fun.
@tjkid073 жыл бұрын
That many pounds of styrofoam will burn about the same. I don't seem to recall saying that you have to use ping pong balls, just suggested that some have done that. Yes, add drains to the boat, and, yes, add a bilge pump if you feel like you need it. You know what they say, the best bilge pump in the world is a scared sailor with a bucket.
@masanraymondkeris38393 жыл бұрын
Dont long speaking..just must go on how to built boat..so bored long watch speaking..
@tjkid073 жыл бұрын
OK, I'll try more short speaking, and tone down my long speaking?
@michaelbassett143 жыл бұрын
Masan, KZfaq has this great feature called scrubbing. If you don’t want to listen forward the video a bit. Thanks Mr. Spira for all the resources you provide. I’m the one building the Caladesi with the white oak frames