To complete I would add
pros
- uses mast stubs to hinge on
- allows rudder boards on the beams
- doubles as a rail
- strong tube structure
- hulls upright
cons
- unproven
- windage
- complexity of three axis of rotation per beam
HP expeditionary
pros
- two axis of rotation
- deck part of supporting structure
cons
- unproven
- lw hull canted
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Posted by: lucjdekeyser@telenet.be
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