Sorry , it looks the boat is no more announced on Craiglist ! Perhaps she has been sold ? I would be interested if anyone have news about the boat.
The 30 hp yamaha was on a 4 m semi rigid !
I have done some race and cruised a 38' catamaran, Ollier designed, built by multiplast / Vannes France. It was the first F40 measured and was...
I think the difficulty to reaccelerate noted by Martin Fisher has little to do with induced drag. Imho the main reason is the boat with...
A piece of Art !
If you have enough compression on the gooseneck, induced by aft location of the mainsheet attachment on the boom, and use two lines acting leeward...
Thanks, Oldmulti, interesting ship. It looks like the floor is wetted, it is more a barge with 3 skegs than a Trimaran
Thanks OldMulti, beautiful banana hull shapes typical of Dick Newick. Outriggers have crescent moon shape, designed to provide dynamic lift when...
IMHO, you consider only the local drag induced by the flap or the interceptor which obviously induce local drag increase. But you must consider...
The acurate sentence would be double purchase reduce the compression induced by halyhard and luff tension to 3/4 of single line !
More exactly, with a single line halyhard, mast compression is twice the mainsail luff tension. With double purchase , mast compression becomes...
Interesting design,thanks, Oldmulti ! Looks that slim catamaran or proa hulls could have a more suited drag curve than a planning hull for this...
I first used a Tornado mast on my Strike 20, without backstays, and shortly I bent the mast sailing downwind with genaker ! Regular stays induce...
Thanks, Old Multi, interesting . Looks that the builder mounted the outriggers on the wrong direction ! He also omitted the stem and stern...
Not much on the Dart 18, as you can't adjust rudder's rake to balance the helm
Right , sorry !
Thanks, Oldmulti, but the Pdf's are empty !
Thanks, very interesting drawing . I think "Drag Strut" is not the adequate name, obviously it counteracts yawing moment on the ama, related to...
More data about Jess there : Project 1 https://www.tri40-jess.com/work/trimaran
In the case of wind, Vwind and current , Vcurrent relative to bottom (undescored for vectors !): - first you determine the wind speed with respect...
