Hi,
I apologize for asking this, because I think I have asked before, but I can't find the answers in the old posts.
What is the height of the Harryproa mast (Aroha or similar)?
The design I have been settled on for the last few months is very similar to Harry in length, weight and displacement, but I want 2 things that are seemingly very difficult:
1) I want to sail at wind speed up to 15 kts, which means I want to be able to sail 5kts in 5 kts of breeze.
2) I want to be able to fit all the pieces into a 40' shipping container.
With a 40' mast, with 4' of bury and a 9' boom, the best sail area I can get is 35x9x0.8 = 252 sq ft main + 6x30x0.5=90 sq ft jib, and that might be pushing it. Total sail area of 342 sq ft, which is 110 sq ft (25%) less than harry.
Questions:
1) Is a Harryproa that fast at low wind speeds, or do I need even more sail area in light winds?
2) Can I make up the difference by using a wing mast?
3) What about a gaff or lug rig to increase the sail area without increasing the mast height?
4) What about a stub mast, so that I can get a full 40' luff? Would that be the "best" (cheapest, easiest, fastest) method? I could make the stub 7' tall and have the ballestron boom all moulded in as a single piece.
Thanks!
- Gardner
York, PA
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