Barry showed this to us several years ago. It keeps the down load off of the bow tube, and snugs the anchor back into or near the main beam. A big roller lives at the end of the bridle, which the anchor line and chain run through.
The live picture is of the Sarabi installation. They used it for years crossing the Pacific. Salty Cat, a KHSD 45 has the same system.
John launched his heavily modified KHSD 40 trimaran June 20thWhat is it, 46′ now?
I did carbon wing mast and boom designs for it also. Will post in the future.
#trimaran #multihulldesigns
I took on the job of building a set of hulls for Kurts 28’ power cat design which we stretched to 31’ by adding about 2.5 inches to every station. We upped the stringer size by 30% and glassed with 8oz rather than 6oz but otherwise stuck with the plan and laminate schedule. We used multiple layers of 8 and 10oz to make up biax tapes, i find it makes for easier fairing and allows for tapering the buildup. We did a half-way-to-yacht quality fairing job, primed with 545 and installed cleats, hatches, fuel tanks, and fuel fills. There will be lightweight 25 hp engines mounted on rear transoms. We finished both hulls and shipped to the owner in maine, who is going to build the cross arms and center cockpit over the winter. I really can’t recommend committing to building a boat over the summer in sarasota, florida in a non-airconditioned space, but, in the spirit of running a marathon, and other ridiculously painful ways to enjoy yourself, we did it. Total build time, including purchasing, hardware, and mounting on a trailer for shipment, was in the neighborhood of a thousand hours. LOTS of pictures after the break-
Stringers
OK, I bought the boat. It should be in Seattle in late August. Its been great working with Gregg the owner. He wants to see it tied up at the lunar lander.
One of the fun things about this job is that I get to see all kinds of things.
Someone sent this to me asking if I wanted to invest in this big production run. I’m always amused that the proponents of these kind of units are so certain of their success, without any water miles.
I got the GPO-3 fiberglass sheet from Online Metals dot com. I hoped to substitute it for the more expensive G-10. Looks like it worked. It is smooth like G-10 though in the picture above it looks rough.
This 2 foot by 2 foot sheet was $10. Picked it up myself. Compare to same size G-10 at McMaster Carr at $47 plus some $20 shipping.
The red probably means it is phenolic. Both of these are fire resistant.
The panel looks like it was made with chopper gun, but it will be used for low load applications, so no worry.
They did used to be a friendly neighborhood supplier. They have been bought by Thyssen Krupp and have a new corporate bureaucracy feel now. Good prices though.
I got that great opportunity to see my Alii Nui side by side with a Constant Camber 65 last week. It was great to see the differences. Again, both were built by the same yard. Alii Nui is foam/glass and the CC 65 is constant camber. Except for butting all the plywood sheets instead of scarphs, and bagging the ply to a true mold, instead of itself, this boat’s hulls were built exactly like the CM system that I have been using for 30 years and that CC has been criticizing for almost as long. Cool. Oriented ply sheets. Stringers instead of mass. Thinner hull skin. Cool.
Alii Nui is 36′ wide. I cannot find the CC 65 data online, but I’m guessing it is 30′ or even 32′ wide. That makes a smaller playpen. First the Alii Nui. Both from the same distance on the dock.
I finally got pictures of my 40′ F40 daycharter cat design from China sailing.
The factory there says price fob China should be around $200K complete. I do need to get over there soon and make sure they are ready for prime time.
They finally splashed it. Waiting for more details. 40′ x24′ based on a formula 40 cat.
Hulls and tubes are done. They plan to build more from the molds. Price is still unclear.
