Good question. I'd like some info on the effect of boat widths at the waterline. A lightweight Van Dusen Advantage (10.25"), a lightweight Wintech Medalist (10.4"), a lightweight Pocock Hypercarbon (10.25"), an Empacher size 15 which for a guy is a lightweight boat (10.75"), a lightweight Van Dusen Traditional (9"), a midweight Fluid (11.125") and a midweight BBG (10.75") are all within 25' 10" to 26' long. The Van Dusens have a bobbed-off stern which would seem to make their effective lengths a little longer. The waterline widths of these boats, all of which I have measured with a caliper except the BBG, are in parentheses. Each of these boats are built for about the same crew weight.
Some boats, I don't remember which ones, Vespoli, Resolute or others, have very different lengths and widths from short and fat to whatever. I haven't gotten up close to these boats so I don't really know what their demensions are. Doesn't one company make all of their singles the same length regardless of crew weight. Go figure.
Something that I find interesting is that the Dreher Boat Company 2008 FISA Ultra shell made by Chris Oxner (Mission Rowing) is, according to their website, 25' 10" long and 9" wide at the waterline. They state that it will support up to a 200 # sculler on flat water. This width is not accurate according to Chris.
You'd think that length and the volume of the hull at the bow and stern would have something to do with the bow and stern bobbing up and down at the catch and at the release.
I'm really curious about width. Personally I don't find the 9" wide Van Dusen Traditional any less stable than the 10.75" Empacher or the 11.125" Fluid although I know some scullers do. That may be due to the fact that I'm just now getting so I can keep my blades off of the water some of the time on the recovery. I can keep my blades off in the V.D. Traditional just as well as in the Empacher.
I would seem to me that the narrower boat would be faster but someone out there smarter than me must have some better info.
The lightweight Van Dusen Advantage at 10.25" and the lightweight Wintech Medalist at 10.4" seem like very good designs for me at 6' 2", and 160 # to 165 #. Every time I've come of the water, have it upside down on slings, am washing off my lightweight Traditional V.D. and see how skinny it is it sure looks like it would be faster, though.
Obviously length and width are only two simplistic factors to consider in hull design but almost all of the boats are pretty much tapered half-round tubes in most of the body of the hull.
Someone else on this forum wanted to know about rocker, bow and stern. I'd like to take side photos of a bunch of same length boats from the side at about the same angle, blow them up, cut the hulls out and compare them.
Last edited by 1xsculler
on Mon Jul 21, 2008 3:59 pm, edited 1 time in total.
I usually win if none of the guys who are faster than I am show up and if I don't go off course.