Luff round will put shape in a terylene sail, albeit well forward. If that wasn't the case mast bend wouldn't be as powerful a tool for racers to...
> An airfoil cross section is best but probably not practical, because it would require the lee board to be much thicker. Might you be being a...
For getting under bridges the bermudan rig has the big advantage of only two spars to handle. The extra gubbins of a gaff rig complicates things...
Maybe a lifting keel boat might work. Its not clear to me whether you want a day boat or something with accomodation. The Q will know more about...
Its not just beam, but draft that's going to be an issue. According to Canal river Trust 3'6 max seem common, 3ft not unusual, and some canals may...
Whilst that's true, on dinghies at least the limiting factor for area is not the optimum for going upwind at speed, but what is necessary to get...
One consideration is that leeboards are surface piercing, which in theory makes them a lot less efficient than centreboards or keels.
They are primarily there for ease of construction and to a lesser extent off the water handling.
I think the chances of a grafted on chine making a noticeable improvement in the performance of that Sandpiper range from slim to none. My guess...
A question is why. The centre of effort between centreboard and rudder is continuously adjusted, quite unconsciously, by minute changes in the...
Some very high performance dinghies are also well into the 0.63 region. It seems to me human powered racing craft like Kayaks must be a bit of a...
Especially as no boat floats on its static lines once it is moving...
What sort of use do you see the sails being given? That affects the choice of rig a fair bit. With leeboards its never going to be especially...
The trouble with such a rule is that unless the rule writers are almost impossibly lucky then the tradeoffs won't be even, and there'll be corners...
They'll struggle to pick up a jib for a 3 tonner in the US!
Marchaj was pretty smart within the limitations of what was known then. I think you need to be a bit wary of a quote of what he said, it could be...
I believe its decades since any active measurement rule used that calculation. To my (limited) knowledge the IOR, which expired at the end of the...
Actually its simple nonsense founded on blinkered eyes and lack of awareness.
Its been done, but the downside is that it tends to bend the mast the wrong way when a gust hits.
We do have battened jibs and these days, and jibs aren't strictly triangular, but its hard to control twist on a large roached sail without a mast.
