The Offshore Voyaging Reference Site

Plumb Bows Are Just Another Rule-Caused Fashion

An exchange between Matt and member Charlie in the comments to Matt’s excellent article got me thinking about the latest design fashion to draw boats with plumb bows.


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Geoff Sheridan

It also allows more internal living space within the same LOA which is important to people paying pricey marina fees per metre!

Matt Marsh

That’s a non-negligible factor, if you need to be in a marina. The Beneteau Oceanis 30.1 is a typical plumb-bow, wide-stern “modern” design. It has a larger interior with more spacious berths than our C&C 35-2, despite being four feet shorter and two tons lighter (and, therefore, incurring marina, storage, wrapping, hauling, and launching fees that are all about 11% cheaper). In conditions up to about the low end of Force 4, it’ll be faster than our boat, as well. However, if conditions are Force 5 or stronger, I would *much* rather be on the C&C. And the Beneteau’s depreciation will more than offset any savings in dock fees during its first decade.

If living space per unit LOA were the sole figure of merit, we’d all be driving Gibson and Stardust houseboats. Each of us must apply our own weighting to the various trade-offs.

Jesse Falsone

I think there are exceptions to this rule. You have already expressed an appreciation for the Saga 43 which has quite a plumb bow, but it is certainly not a design inspired by a rule. With very deep U shaped sections, some topsides flare, and a low/moderate L/B, the hullform is decidedly different than most newer plumb bow designs. The extension of the near maximum beam forward of amidships likely makes up for the reserve buoyancy lost with the finer bow. Owners seem to report that the boat is not as wet as many might assume.