How fast can I build a dinghy?

prv

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I've posted here before about my tender problems. Essentially, Kindred Spirit is fairly small, with a short coachroof, a mizzen which sweeps the stern, and very limited locker space. So it's always been a challenge to find a usable tender I can stow on board. At present we have one of these, selected by my dad purely for stowage size and never been used as we all know it's useless really.

My plan this summer is to head for Cornwall with a couple of mates. That tiny fart-bag of a boat is obviously a non-starter for taking three of us up the Yealm, or ashore to Dartmouth, or wherever. So I've been trying to find an alternative.

Step one is that I'm prepared to make some stowage compromises for this trip. I don't want to always sail with the foredeck obstructed, but I'll tolerate it for cruises like this where it's necessary. So I could just haunt eBay, gumtree, etc for a cheap bigger inflatable and roll it up on deck.

Step two is that I still don't have anywhere to stow an outboard. I quite like rowing, but only in something that actually slips through the water like a proper boat. This pretty much rules out inflatables again.

Step three was the Portabote - this seemed plausible and could be strapped along the guardrails, but a new one is getting on for two grand and second-hand ones are rare and still not particularly cheap. My ballpark for this is the £100 - £150 level, ideally.

Step four was this nesting dinghy. OK it'll take up my entire foredeck, and I'd need to check the staysail will still tack over it, but otherwise it seems ideal. Oh, it too costs ten times as much as I want to pay. Still, gives me an idea...

Step five - build my own nesting dinghy. Specifically, the Two-Paw 8 here. I'd guess it probably takes three sheets of ply; I can get 5.5mm WBP for £13 a sheet, other woodwork from my own stock of offcuts, glass tape is cheap, and I've got enough epoxy in the shed to at least make a good start albeit probably not the whole thing. All looking better and better; it even fits on my foredeck provided I don't mind shifting it to get at the bowsprit or anchor. For short hops I can tow it anyway if the weather's reasonable.

The downside? Other people's online build logs for the same dinghy stretching over months and months, and anywhere from 100 to 300 hours of work reported. That's a pretty major obstruction - I want to be using it this summer, and in the meantime I have a real boat with wires hanging all over the place, clever new interior joinery in mind, and tons of spars and deck woodwork in desperate need of varnishing. That stuff will take priority, but it'll take all the time till we launch for the summer, and then I'll want to be sailing, not spending months building dinghies. A couple of weekends and the odd evening, sure, but nothing like the time these other folks seem to have taken.

So, finally (if you're still with me :) ) the question: would it be naive to think that I can knock out an 8-foot stitch&glue dinghy to rough-as-arse standard in a couple of weekends? I've used epoxy and tape before for repairs, and I'm quite happy whizzing a circular saw round a sheet of ply. I've never built a dinghy before, but I can't see how a build like this has to take as long as it seems to. Are these people just taking their time to produce perfection while my only real success criterion is that three of us are mostly dry when we get to the pub? Or am I underestimating horribly, like when I tried to gut a bathroom to bare joists and rebuild in a week?

Stitch and glue doesn't require great accuracy - filling some pretty heinous gaps with thickened epoxy is all part of the process. Paint on this build would be only as required to keep the wood sound for a few years of very light use - no time-consuming sanding and polishing for a mirror finish. (Indeed, something splodged with leftover Danboline and Ronseal probably has a certain anti-theft advantage.) No need for any finesse on the fittings - breasthooks for example could be reduced to a simple triangle of 18mm ply instead of beautifully curved mahogany. And so on. I'd omit all the sailing features at this point.

Doable?

Pete
 
Thanks. It's fair to say that building might not be the most objectively sensible option. However I do enjoy building things, so the time it would burn is a cost but the effort involved is not.

I don't think I've ever been in an airdeck inflatable, but do they row significantly better than plywood floor ones (including with inflatable keels)? Because if not then I still don't really want to use one.

The other thing is that although Cornwall is the immediate deadline, it's not going to be the only time I need a proper tender. I'd leave the pram ashore for my normal local pottering, but I'd like to have the option to bring it along if I expect to need it.

Cheers,

Pete
 
Google - flapdoodle dinghy and look at that as a possible model.
Folds flat, easy [ish] build and looks adequate - might want to choose to use it in good weather, depending on the load.
Plan to build one this winter - 3 sheets of ply and some lorry siding
Just fed up with the cockpit locker being stuffed full of inflatable dinghy.
 
google ---saving old seagulls---go to boats suitable for seagulls---check horsley anaraks posts---regards lenten
 
I think that with two of you a weekend would crack the worst of it if you have a warm garage to ensure the epoxy goes off reasonably quickly. Having some plans or drawings from a boat that suits your needs will help a lot. I remember my dad doing something similar to create a cabin top dinghy but that was a two man job with a removable piece in the transom to allow it to sit over the hatch 'bubble'.

Yoda
 
Google - flapdoodle dinghy and look at that as a possible model.

Thanks. A bit concerned that I had to use the Wayback Machine to find the website - would I still be able to obtain plans? Also I'd assume that something involving a folding mechanism and a waterproof membrane is going to be harder to bodge together in a hurry than something rigid sawn in half. If I'm honest I also don't like having structural fabric in a non-inflatable boat. I will have a closer look at it though as it will probably stow better than a nester.

Whats wrong with two,two man kayaks strapped to guard rails?

They're probably as long as my boat, unless they're bent like a banana they won't fit against the guardrails all the way along, they'd have to go on the outside (at risk of being washed off) or I'd have no way to get to the mast, they'd almost certainly foul the jib and staysail sheets severely, and they're expensive. Apart from that, nothing :-)

I think that with two of you a weekend would crack the worst of it if you have a warm garage to ensure the epoxy goes off reasonably quickly.

Cheers. I don't have a garage, but I do plan to do this in early summer (after I've finished the work on KS herself) so hopefully it will be warm enough.

Having some plans or drawings from a boat that suits your needs will help a lot.

Yes - in case I wasn't clear, I'm not just using the Two Paw for inspiration, I do intend to buy the plans and follow them. I emailed the designer yesterday to check the exact dimensions and how much ply and (approximately) epoxy are needed.

Cheers,

Pete
 
You obviously have the skills to build it - so I doubt you'd end up with a "rough as arse" product after a couple of weekends. With good preparation and planning, plus a bit of care and sandpaper you'll have a perfectly useable dinghy in that time. A few more evenings spent on improving the paint/varnish and some refinements will finish the job at leisure.

I'd say that's perfectly doable.
 
prv,

I'd go for a secondhand inflatable dinghy a touch larger than the one you've got - say around 230 size. A roundtail would be FAR preferable to a solid transom; and it's easy to get outboard brackets for roundtails, ideally a light 2hp Yamaha or similar to go on it.

It need not be anything so extravagant as an airdeck, you're not planning on wowing the locals or spending a fortune - inflatable or slatted floor is fine, try to get one with lots of narrow slats rather than a few big ones, so it will roll up smaller.

You may not want to sell it at the end of the season, but as mentioned you should sell it on easily enough.

I had a look at E-Bay last night for something to do, there seemed to be a few inflatables going.

Do try to avoid a solid transom though the only people they're really popular with are the manufacturers. I bought one and found although as a boat it'a fraction the size of my trusty Zodiac 240, when rolled up it was near impossible to fit even in the large space under my cockpit.

Edit - If you end up buying a new one it's obviously a case of shopping around; may be different now but when I went into it a couple of years ago looking for a 230-240 size roundtail, Piplers of Poole ( no connection other than had excellent service ) were a good £100 cheaper than other more 'mega-name' mail order places.

It probably goes out of your ( and my ) budget but it pays to get the much larger tube size than is bog-standard these days, one of the more useful spec's to check.
 
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I would look at building one with basic skills and no small children under foot 2 weekends is plenty to get the building done and then a few evenings seats, rubbing strake, and paint. Also have a go at designing it yourself; very satisfying on launch date.

Alternative buy a big old inflatable and tow it. The inflatable floor dinghy motors well and would row better if I changed the oars but the avon is still the best to actually row with a set of good wooden oars.
 
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Try to get a book by Harold"Dynamite" Payson called 'Instant Boats' with full instructions for building and materials lists and drawings/measurements. Some of the designs within are by the late Phil Bolger and all seaworthy craft from canoes to small speedboats.
Amazon will probably have several of Payson's books and I can promise you an interesting read of any one you select. I built model yachts and dinghies from the plans therein which he permits copying on a photocopier for the scaling up and cutting in 1 and 2mm ply from the book. One of these designs is a 23ft schooner and she sailed beautifully as a model, designed by Phil Bolger too. Many are developed from the Maine fishing dory, a good load carrier obviously, and seaworthy too.

ianat182
Full size plans are also available from the U.S.A address for all designs.
 
I'd go for a secondhand inflatable dinghy a touch larger than the one you've got - say around 230 size. A roundtail would be FAR preferable to a solid transom; and it's easy to get outboard brackets for roundtails, ideally a light 2hp Yamaha or similar to go on it.

Possibly I should have put this in bigger letters in the original post, but I have no room for an outboard motor on board. If I did, I wouldn't have this problem.

With no motor, inflatables are a pain to row, which I why I ruled them out in my original post ("step two").

Pete
 
I would look at building one with basic skills and no small children under foot 2 weekends is plenty to get the building done and then a few evenings seats, rubbing strake, and paint.

Thanks, that's kind of my estimate too. What makes me doubt it is the stated build time of 180 hours, and people's web pages documenting their builds where they've taken longer still. I don't like it when my estimates don't match observed reality - I'm trying to find out why.

Also have a go at designing it yourself; very satisfying on launch date.

An interesting project, but developed plywood shapes are not an intuitive thing to mark out. Since my aim is a dinghy rather than a learning experience, I'd rather follow a proven design.

Pete
 
Possibly I should have put this in bigger letters in the original post, but I have no room for an outboard motor on board. If I did, I wouldn't have this problem.

Do you have room for an outboard bracket on your stern rail? This is what I do.

This is what everyone suggests. Invariably I have to point out that I have no stern rail, and the mizzen boom sweeps the whole of the stern area, eight inches above the gunwale :)

Pete
 
FWIW, the Honwave inflatable V-floor models row quite well..........I know 'cos I've got one and make a point of rowing frequently and trust me on this, I'm NO champion rower! but I can maintain a reasonably straight line and a reasonable speed, say 2 knots at a guess. Hope this helps.
 
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