Category: Modern boatbuilding

Modern and plywood boatbuilding and plans

Ella skiff – drawings for making a model of the stitch and glue 12ft skiff

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Panels for model-making

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Ella dinghy, lines and internal arrangement

The Ella skiff has made a bit more progress this evening. I’m pleased to say that we’ve now got a pdf file of the drawings needed to make a simple model ready to be downloaded and printed out.

The boat’s become a little simpler than the initial drawing showed. There’s no forward rowing position, for example, because I couldn’t find a way of fitting it into the panels above – and I didn’t want to go beyond three and a half sheets of ply for this boat.

If you’re interested in her, all you need to do to make a model is to take a printout, stick it to a piece of cereal packet, cut out the various panels and make up the model with sticky tape. Here’s one example of how this kind of model can look; here’s a second example made by the excellent Ben Crawshaw; and here’s a third example made by Woody Jones, and complete with little wire figures made to scale.

If anyone out there makes a model of this little boat, I’d be very grateful to see them, and to be able to post them here at intheboatshed.net!

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Jamie Poynton and friends build a stitch-and-glue runabout

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Jamie Poynton and friends built this 14ft vee-bottomed stitch and glue
marine ply and epoxy runabout at the Boat Building Academy

Boat Building Academy principal Yvonne Green has sent us still more great photos from the Academy’s  student launch day in December, this time of a stitch and glue runabout built by Jamie Poynton and friends. Thanks again Yvonne!

Jamie lives in Axmouth, near Lyme Regis and for a while commuted weekly to Eel Pie Island in London to work with his grandad, who was renovating a 1950s tug.

City & Guilds awarded him a full bursary to enable him to join the course at the Boat Building Academy.  With help from fellow students Seb Evans and guitar maker Rob Murphy, Jamie built a  14ft vee-bottomed stitch and glue outboard runabout in marine ply, based on a V-shaped ski boat.

Yvonne calls this the Chanel boat because of it’s clean, simple look, posh laid mahogany deck and beautifully finished black and white paintwork, black carpet and white leatherette seating, and adds that the photo at the top (Jamie in the back, Rob and Seb in the front) sums up the atmosphere in their particular part of the workshop during the course.  ‘It was fantastic seeing them thrilled by their own achievement and looking cool on launch day’, she says.

The form of the boat was created by Academy instructor Mike Broome, who also designed Bob Hinks’s boat Cirrus. Jamie wanted to build a ski boat, so Mike produced a lines drawing (14ft  loa, 5ft 4in beam, 22 degrees deadrise, 12ft lwl). The bow was a conical development and the panel shapes were generated by first building a panel half model at 2in:1ft from modelling ply. The finished design in terms of deck layout and interior evolved as the boat was built.

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PS Don’t forget to ask for a pdf copy of the Academy’s prospectus for the coming year, as it makes interesting reading. Email Yvonne at office@boatbuildingacademy.com and I’m sure she’ll send you a copy.

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Ella, a 12ft stitch-and-glue skiff

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Preliminary drawings for the Ella skiff

I’ve decided to develop plans for a little 12ft stitch and glue skiff using Greg Carlson’s excellent Chine Hull Developer plywood hull development tool (scroll to near the bottom of this page).

This small project will take a little while to complete, and follows my 15ft 6in stitch and glue Julie skiff, which has attracted a lot of interest. However, boats like the the Julie can easily be a bit too much of a project for many people: they’re too long to be built easily in the average garage (in the UK at least), and they’re marginal when it comes to car-topping.

So these preliminary drawings show the very beginnings of the 12ft small skiff, which I’ve chosen to name after my daughter Ella. It will bear some similarities and of course quite a few differences compared with the larger boat, not least because the lines of a short boat like this must be rather fuller than those of the larger model and can’t benefit from the same hull form features aimed at reducing drag due to the formation of eddies.

However, like the Julie skiff, it has been conceived with rowing, not outboarding or sailing primarily in mind. For those who take an interest in figures, ratios and the rest, the wetted area here is 31sqft, maximum beam at the gunwales is 4ft, the design displacement is 400lbs, the righting moment is 254ft-lbs at 15 degrees of heel, and the prismatic coefficient is about .57.

Anyway, I’d be delighted to hear from people interested in the project – you can reach me at gmatkin@gmail.com.

PS I made a train journey this pm and took the opportunity to make a bit more progress. I’ve made up a lines drawing, and sketched some internal joinery, including what will be a removable centre thwart to allow the rower to row from a forward position when there’s something or someone heavy in the stern.

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