Tag Archive: diving

Motorized DIY stitch-and-glue W catamaran kayak – the movie, by Berny Marsden

I took it on Coniston water in the English lake district.
It is brilliant! The 43 year old Seagull 3 HP motor starts 2nd pull and has lots of compression. It’s very light and the perfect size for Banana Split (the boat). On my own it will do about 7 MPH, and in tandem with my wife Andrea it pulls 5 MPH.

I have made a centre board and am making a rudder, mast and sails as my next development. Sadly, the English winter is nearly upon us so I might not get the chance to test until the spring.

I have found a seaside boating lake that should be ideal for testing the sails.


United kingdom

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Berny Marsden’s Stitch and Glue W Kayak, UK

This is the latest DIY W kayak project –

It’s the first DIY design allowing to take the boat apart.

Says Berny:

-“I have been busy building my W kayak.  I tested it today and did a dive off it with great success.  I decided to use the aluminum connecting poles and make the craft in three parts. This has the benefits of easier construction, easier transport and easier storage.
As I anticipated, it is very stable and should make an ideal sea diving platform. The seat section provides inherent buoyancy if it should capsize. However, I tried very hard to capsize it today and it never looked like getting close to it.
I am so pleased with it and very glad I saw John Forney’s Design.
I would be grateful if you could thank him for his help and advice.
Also, thanks for your help and encouragement.”




Added in November 2012 –

Here’s a video showing Berny testing his W kayak: