Gardner,
I was just driving down the highway yesterday and saw a 53'
hi-cube container. I've ready about containers longer than 48', but
never seen one until now. Not all ships can handle them, but big
ships at major ports often can.
If you want to transport the container over roads, or you're only
going to ship it to major ports, you could go to a 48' container or
even slightly longer. That extra 8' might be nice on your mast.
- Mike
It seems from discussions in the group that a wing mast is considered
to be a better performer than the easy rig, but I can't seem to locate
any messages that give specifics on the calculations behind that
decision. Does anyone have those at their fingertips?
My calculations for the speer partial wing mast gives a chord of 30%
of the desired foot of the sail area. For a 40' mast (to fit into a
shipping container), I am looking at a 35' luff and a 9' foot. This
would give a sail area of 35*9*0.8 = 252 sq ft. If I put a jib on it
with an easy rig configuration, I could add about 75 sq ft (5x30/2).
I think that a wing and an easy rig are mutually exclusive because the
wing mast has its center of effort further forward than a regular
mast, so I am back to my original question of how do I know the wing
mast is better than the larger sail area of an easy rig?
If I can toss in a second question, has there been any progress on a
two part mast?
- Gardner