G'day everyone I am sailing north this year on a triton24 and I want to take a hard dinghy with me. I have a RIB inflatable but am fed up with fixing leaks and prefer rowing anyway. I have an 8ft fibreglass pram which I like but obviously there is not much room on the deck of a triton.
My thought is to turn this dinghy into a nesting version. I'm just curious if anyone has done this. It is a little on the heavy side but manageable. Also I will be adding buoyancy to the gunwales to improve stability. Any thoughts would be appreciated.
George
Try this link to the NZ yachty forum.
They build a nesting dinghy from free plans off the internet.
crew.org.nz/forum/index.php?/topic/17051-beginners-guide-to-boat-building/
I built a small plywood dinghy (a Welsford Scraps) and converted it to be a nesting dinghy by doubling up the centre bulkhead and then cutting the planking between the two. My main motivation was to be able to fit the dinghy in to the back of the car so that I can store it at home. For that it works great - fits in the car nicely and takes about 3 minutes to assemble on the beach.
My second motivation was to be able to nest it on the foredeck of my 22ft boat. For this it's not so good. The design was not actually meant to nest, which means the two halves don't fit together too well. Its a bit heavier than I would like to have to haul on to the deck and it would be cumbersome to set up/take apart on deck or on the water.
My advice would be to avoid trying to nest a boat that wasn't designed for it :-)
If I were to do it again (and I may just do that!) I'd be looking at a Stasha skin on frame dinghy. Super light weight and nests well: www.woodenwidget.com/stasha2.htm
Check out Duckworks for a range of Nesting dinghy plans.
duckworks.com/search.php?search_query=nesting
As well as Denman marine.
www.denmanmarine.com.au/eastport-nesting-pram-p12/
I appreciate the suggestions but I don't really want to build another dinghy. this glass one as I said is a little on the heavy side so I will have to use a halyard to hoist it but that weight can generate momentum when rowing. Also its bullet proof when pulling up over rocky beaches etc
More thinking needed perhaps.
George
It depends on the shape of your pram dinghy. From my experience, a dinghy to cut in half needs to have a bit of a V-shape to the hull, so that one half nests on top of the other, as though it is hugging it. If the sides are vertical, then that won't happen and the top half will be 6 inches or so above the bottom half. The other thing is that ideally you'd cut the dinghy about 60% to 2/3 of the length, so that one half rests inside the other, and they are not equal length, especially when you have a buoyancy chamber up front. To fit on a foredeck having halves of a square dinghy there is not as easy as a truncated triangular shape, i.e. I prefer to start with a dinghy that has a narrower pointy bow and narrowing transom.
The first photo of Nick is what I built, by narrowing the transom of a Spindrift 9N I think. The big guy and his little nesting boat is from somewhere online, I forget where. And this last photo is a normal Spindrift 9N I think. Having the transom part so wide aids buoyancy, but is hard to walk around and manouvre on deck when you need to anchor, hence narrowing the transom. You can always add buoyancy by lining the inside hull with 50mm closed-cell mattress if you find the right glue. Usually joining the halves is by 5 wingnuts and bolts. You can add some foam around the bolts to stop water ingress.
I've built two nesting tenders to use on my 27 ft yacht. Both were also suitable for emergency use as they were unsinkable. Problems were: (1) quite heavy, since I wanted them to be bullet proof emergency craft as well, (2) dangerous to assemble in any seaway. Problem (2) is the real issue so I don't use them anymore.
My current tender, also unsinkable, is one piece but there are still disadvantages because of the "small" size of my yacht. It costs more to buy and maintain but simply for safety reasons I'd recommend getting a larger vessel that can accommodate a comfortable and safe tender.