New Stiletto Catamaran

I was approached, along with the rock stars, I was told, to propose a design for the new Stiletto 10 meter catamaran. A kind of cruiser/racer with the iconic canopy as a kind of trademark. Said he had been in the Gunboat and J boat projects. The design brief was a bit unusual. It needed quick set up but must have no crossarms. The cockpit must be the crossarm. I did not know how that would work forward. I proposed Rafi’s fold system. Developer was not impressed I guess.   I put standard tubes on it for now.
The rest of the design brief was to be like an M32 with a minimal interior. Begs question why not just have an M32 if there will be no interior? My flared hulls would allow a pair of doubles and keep a skinny waterplane for speed.  I know nothing about marketing, but am sure it has always been true that if the toys are not shared, many of us would not have the toys.
It could have been simply trolling for ideas. I have had that happen several times before.

So I did a couple of quick models.  M10 is pretty straightforward.  M11 is very wild with defined edge lines.


and the wild one


Printing Patterns

When I send out full size patterns, I use this Canon unit.  I don’t give it much thought but it got some interest on Face.   Back in the HP days color printing was so much slower that it was not a reasonable option.  This unit has changed all that and I am gradually changing all the full size plots into color.  That is work as some colors don’t show well in color and must be changed.  Also the layouts change as the parts can be closer together in color.  I just sent a lot out that I did not compact and it came to over 30 meters of full size plots.

Old tech was to plot originals and make copies to post.  2 years ago I got this to do just in time printing with no originals. By now it has moved to largely e-files. So it’s already archaic oddly enough.  It will do a 100″ plot in about 30 or 40 seconds.


Uganda Update

The second 65′ KHSD passenger ferry is about to go into Lake Victoria in Uganda.  This unit will be much lighter and faster than unit #1 which had a bit more freestyle and a bit more Home Depot.  CM plywood/epoxy also, with cored flat surfaces.




I just got some samples of the flamestop intumescent paint.

I want to be able to try painting it on a part and then covering that with the 2 part poly final paint.   This will be far better than applying toxic phenolic onto the inside surface, wearing a moon suit.   Or mixing toxic bromine in with the epoxy.

I will report on the results.  It looks like a great way to get code or rule compliance in galleys or engine rooms.

Sarabi Mast Update

Mast guru Ted van Dusen might be building the new mast for Sarabi. The reports we get are that the mast thickness at the upper bearing is between 1/2″ and 3/4″. Is odd that it varies that much. Just mic it and be sure?
Ted ran a FEA on it and came up with more like 1-1/2″ wall thickness required.  I may need to note that I did not design the mast for Sarabi, nor did Forespar.  It was all done at Aero.
That tracks with my work on Alex’s mast where first principles gave one wall thickness and the FEA required almost double that.