There is likely a drag penalty for overlapping sails. But this penalty does not entirely cancel out the added area. And only the area that is...
I presume the answer depends on how the water is moving in relation to the centerline. For example, with my LOLA design, the half-breath...
Did This include lofting and setup? Also, with a more complex hull shape, fitting bulkheads and shelves becomes more difficult due to constantly...
Plan "B" would likely be the faster sailboat, because the added initial stability caused by the wider aft sections. If you can use as much Sail...
I think your time estimate is so far off that it's not even wrong. I'm thinking more like 10,000 hours. And even that might be a bit skimpy. The...
I think that this is nearly a ridiculous statement. Yes, there is such a thing as "hull speed". It is the top speed a vessel can go with a...
Actually I have read a considerable amount of material about hull design, including Mr. Marchaj's work. It is interesting that his earlier work...
I agree. But I'm not thinking of this as a commercial project. Just as a curiousity piece. I could build the model and take bets on whether or not...
POE 630b Attached is a sketch of my modified Plank-On-Edge concept. After realizing that the original had an S/D of only about 5.3 instead of...
I'll go out on a limb here. And I'll stick mostly to boats and ships, with only a passing thought about automobiles. To get it out of the way,...
Don't have any ideas. But I do have one question. Who is going to go aloft and furl and unfurl those eight square sails? Are you going to have a...
Just thought I would correct myself on my last post were I have a thumbnail of a design concept. It doesn't have anywhere near the S/D the...
OK. It looks like this thread is nearing its natural end. But, just for everyone's amusement and to satisfy my own curriousity, I have sketched,...
Oh no! Looks like someone didn't do their weight study and meta center calculations.
I used to have an extreme prejudice against sailing fast. I am starting to grow out of it. But there are practical matters. Such as, how do you...
Run away screaming. I just calculated the Displacement/Length ratio (D/L) of this concept and came up with 9530! A rather heavy sailing yacht has...
I would think that a lot of the choice would be based on how the boat was being paid for. I imagine that if I owned a fleet and could afford to...
I find this to be an interesting discussion. But I think there are a few myths here. One is that it is difficult if not impossible to bring a...
It appears to me that rigging loads are a proportional problem. What matters most is the backstay angle to the mast. It really doesn't matter so...
Minor Changes Made Upon further examination, I discovered that the rudder tipped up a good deal when I tried to steer it. I discovered this with...