M.B. Marsh Design offers a steadily growing range of plans for small watercraft. Our services include custom design, refit planning, condition surveys, failure analysis, systems integration and more.

Our designs hit what we think is an ideal balance between performance, capabilities, cost and ease of construction. Most of them are suitable for amateur or advanced amateur construction. These are boats that you can build in your garage, needing only patience, common tools, basic carpentry and fibreglass skills, and a willingness to learn. The resulting vessels are stylish, capable boats that will serve you well for many years.


From The Drawing Board

New designs from our drawing board, and assorted thoughts on boat design in general.

Why I love boat trailers

If a boat is a magic carpet for dreams, then a trailer is a magic carpet for a boat.

Simple systems: It's about design, not quantity

What do we mean when we say a boat's systems are "simple"?

There's a temptation, at times, to say that simplicity is about cutting back. About leaving out whole systems to save on installation and maintenance dollars. I don't think that's really what it's about.

What we're really looking for when we say "simple" is, more often than not, elegance. Maintainability. Reliability. The least complex, least costly way to fill a stated specification. The ability for the captain to understand, and repair, every system on the boat.

The meaning of simplicity

Many of you know that I'm an advocate of simplicity and elegance in systems design. What, though, does that really mean?

Inboard or outboard?

An important decision in any powerboat project is the choice of exactly what powertrain to use. Our Starwind 860 is now almost at the point where that decision must be locked in.

Should it be an inboard or an outboard? Gasoline or diesel? What kind of propeller?

And, importantly, why?

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In The Shop

Dispatches from the shop: Progress reports on our boat building projects, plus some useful information for those of you who are building, restoring or repairing your own boats.

Making Scarph Joints in Plywood Panels

When your plywood sheets aren't long enough, they must be joined end-to-end.

Butt joints aren't strong enough. Backing blocks can cause problems when you try to bend the panels. CNC-cut puzzle joints work great – if you have a CNC cutter. So the good old scarph (scarf) joint is the standard solution.

Here's how to make one.

Does she look like a boat yet?

At what point does a boatbuilding project cease to be a pile of lumber, and become a boat-in-progress?

It certainly looks like we're getting there now.

The new boat shop

Have you ever wondered if you might be a boatbuilder? Well, if this photo gets you excited, then the answer is yes, you are.

Crossbeam bits & pieces

Progress on the Starwind 860 prototype continues. It does seem, however, that I've fallen behind in posting updates about the boat.

The aft crossbeams are nearly done; they still need the fibreglass tape on their outer edges and a final fairing coat before painting.

The front crossbeams now have their upper mid-beam structure installed and are ready to be closed in. That task will probably take place tomorrow.

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