Nigel Irens has designed powerboats which are high length to beam ratio, and low displacement to length ratio, and deep forward/shallow aft. They...
Superpostion requires a linear system. Simple beam theory is linear. The models/equations considered in this thread are nonlinear so superpostion...
@Tops What class are you taking?
What type of yacht and what requirements need to be met? There are major differences in the analysis required for a typical 30 foot yacht for the...
Not a Yanmar. It is a Neander. Yanmar previously distributed it for 3 1/2 years, and Yanmar Italy manufactures the engines for Neander. Dtorque -...
Why do you say it is impossible, assuming a powered system?
Article about sealed floatation chambers of a stich and glue boat bulging at altitude. Altitude change and air buoyancy tanks | Port Townsend...
I've seen small boat sails made with house wrap fabric. The original version was sold by DuPont as "Tyvek". It is a synthetic material made by a...
Sailrite in the US sells sail cloth, but nothing exotic. Dacron is a brand name for polyester. I don't know if they export. Sailrite: Fabric and...
Open the link in the first post and watch the video.
Dave Dillion in Boats: A Manual for Their Documentation discusses using declivity boards (short boards with the angle of heel and trim) when...
I remember seeing reports about and videos of Ghost around ten years ago. Original design and prototype build by Juliet Marine Systems in the...
Boats: A Manual for Their Documentation covers measuring boats using "traditional" methods. Published in 1993 by ASSLH and Museum Small Craft...
This boat would be a good candidate for photogrammetry to generate a point cloud with millions of points. The point cloud can then be imported...
Gonzo, do you have a reference for this?
I'm now a "Participant".
Or just have the axle located sufficiently aft of the CG with the outboard mounted on the transom. Depending on the source the usual...
PNA 1988, Vol III, Section 9.4 Page 238 has a discussion of the differences due to free surface effects. What is your reference for: The...
The usual expressions for calculating Munk Moment of regular shapes are for fully submerged flow. The same phenomena exists for bodies which are...
Munk moment is an inviscid phenomena, not resulting from separation. There can also be a moment due to separation. MIT Open Course notes:...
