Boat Building Forum

Find advice on all aspects of building your own kayak, canoe or any lightweight boats

Re: Tandem Great Auk
By:Nick Schade - Guillemot Kayaks
Date: 9/10/1999, 4:15 pm
In Response To: Tandem Great Auk (Peter Bernier)

> I'm not sure how to post a question to Nick himself. I would like to know
> the procedure in extending a Great Auk into a double using the single's
> measurements as a base, for example the added space between forms, beam
> enlargement,and how to decide where to put the cockpit. Thanks

The GA would need several modifications to make a double. Length, and deck being the most obvious. You could probably leave the width alone. My brother increased the length of the original GA by repeating the center form and bumping out the spacing a bit. The deck is a little trickier. Locate the cockpits about 4' apart, about 2' fore and aft of the middle of the boat. If you keep the deck profile the same in front of the forward cockpit and behind the aft cockpit you should be in pretty good shape. Then you need to create a new deck shape between the two cockpits. The elevation of the centerline of the middle form is probably a good starting point. Use this and the same slope of the deck for all the forms between the cockpits, then guestimate a smooth transition from the sheer up to the sloped deck.

Does that make sense?

Messages In This Thread

Tandem Great Auk
Peter Bernier -- 9/10/1999, 2:40 pm
Re: Tandem Great Auk
Nick Schade - Guillemot Kayaks -- 9/10/1999, 4:15 pm