Re: Aluminum Lapstrake Colin Archer
The steel boat shown above is a Brent Swain design. I built one.
30 feet or 36 feet. Probably 36. Each plate is about 2,440lbs. 3/16 inch thick.
I also helped to build two other 36 foot Brent swain boats.
There is a CAD CAM steel boat designed by Gary Noble and now many others that are pre cut from pre primed plate. That eliminates a lot of sandblasting later on.
The absolute best book on the subject overall is STEEL AWAY. Then CRUISING AS A WAY of LIFE by Thomas Colvin. A must read. Best book on Aluminum boats is by KLINGEL.
The problem with the lapstrake metal boat being built is this:
A lot of over lapping joints makes noise in the water.
Lots of welding.
Also more wetted surface=more drag.
Corrosion can be much greater than steel.
Aluminum condensates 3.75 times MORE than steel.
To foam or insulate the aluminum is more expensive for the foam, because it must have a special coating first.
If it is the newer aluminum for hulls (5356) or newer it will help as far as the corrosion rate.
Cost is much higher to build the hull.
My boat fantasy below: "Luckystar"
Last edited by donald branscom; 12-07-2009 at 07:43 PM.
Reason: add photo
I love the smell of fresh cut plywood in the morning.