A proposal I just did for a 65′ fishing cat. It would be based on the 65 ferry. In CM plywood/epoxy hulls and ply/core/ply flat areas.

I will be out of the office from M14 through M23. I will have the workstation with me and should be able to catch up on some 3D modeling.  I should have email where there is WiFi.
Anyone have any projects in Iceland or Scotland that I should look at?

Wandering back from the post office after shipping a plan set I saw this interesting 4×4 van.     It was painted Stars and Stripes blue with Stirling 2 part polyurethane paint.
It is also a tiny house for ronin boat builder James Moreland.
Bed across the back. Galley on starboard. Office on port.  Call him if you need help on a boat project.  Hit him at 206 380 7094 if you need help on a project in PNW.
Glad to meet him.

Back. A few of the plans of the 42 daycharter cat sold last week. It needed conversion to metric and some of the hand drawn parts converted to CADD. Thats done. Back at it next week on this blog and the custom projects.

You surely remember the broken lumber A-frame shown recently here on the 42 daycharter cat.  The owner chose to replace and update with a standard alloy tube and wire system.
My worst fears about MSC came true.
I submitted the stock, stamped, original plan sheet to MSC.  I also submitted an 2017 version with the same section properties or better.  Keys Rigging submitted the proposed with extra strength on all items.
It was rejected. They wanted the calculations also.  Done. Those were rejected until I would explain how I did my calculations. They did not have a standard to aim for. In fact I was asked to explain what the relevant factors were.  It has been almost 2 weeks of back and forth now. My fear that nothing that was settled “law” before, is now.
I have probably done a hundred of these, and I bet Keys Rigging has done that many also, or more.
I also get the feeling that they are stressed and angry at MSC. Maybe Trump chaos has hit there also.
This is one part of why no postings last week. Deadlines also. Next week will be better I’m sure.

I see an ad for Masterbond flame resistant epoxy in one of my tech magazines. Says it meets UL 94V-0 specifications. I see nothing about meeting E-84 though.  Product is EP21FRNS-2.
www.masterbond.com
Has anyone used this product?

The 27 cat update is pretty much a complete study plan now. I just finished the longitudinal sections drawing.  First the rendering to recall what it is, then todays drawing.  Demountable and trailerable.

I finally got a chance to model this on that I have been looking forward to doing since before thanksgiving.
No windows nor cockpit are cut into the model yet until I verify the interior and weight/trim study. It will probably be built with vertical bows, but I hope not. Main hull not more than 84″ wide.
Displacement is 4217 l bs. It takes 5 HP to go hull speed of 8 knots.

The latest update to the DF31 with ply/carbon cross beams.

Foam/glass main hull and CM ply/epoxy amas.