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Steven Shelikoff wrote:
... A friend of mine has never tipped his hobie 16, and he's sailed it for going on 15 years. I've only tipped mine a couple of times, and only when I was sailing like I was in a Pepsi commercial, as Doug says. If you're flying a hull in a Hobie 16, you're courting a capsize. They simply don't have enough reserve bouyancy. If you only sail in winds less than 10 knots, then it should be easy to avoid capsizes. OTOH I doubt very seriously that it's even manageable in 30 knot winds, unless you have cut-down or reefable sails. .. I once pitchpoled a Hobie 14... over it's sterns... in no wind at all, just sitting too far aft and not paying close enough attention as the aft most part of the hulls snuck under water. You might need to lose some weight. Not really. 6' & 170#. The issue is the lack of hull volume & reserve bouyancy. ... I sail with 4 people on my 16 with no problem. While breathing helium, no doubt. A Hobie 16 probably wouldn't capsize with both hulls planted, but it's still possible in moderate conditions... I've seen one go over from a motorboat wake that put the lee bow under... A big motorboat wake can do all sorts of things to small boats. But a Hobie 16 is a lot less likely to be swamped or capsized by the same wake than a sunfish. Hardly. The Sunfish has a great deal of reserve bouyancy & stability. It probably has twice the hull volume (ie bouyancy) of the Hobie 16. The problem with catamarans in general and Hobie 14s & 16s in particular is that their stability is all front-end. They generate their max righting moment at small angles of heel, and from there on they get easier and easier to heel further. A gust of wind under the tramp and ka-splash. With the Hobies, it's made worse by the tiny hulls. Once the lee hull goes under... or even partially under, you have lost all righting moment at that point and the boat just falls over. 30 knots??!?!? That was an extreme. However, I have been out in mine by accident in more than 30 knots. I got caught in a bad storm a couple of miles offshore. I had to reef the main while out there, bobbing around in big waves, high winds and lightning all around, standing at the front of the pontoons trying to get the little ball on the halyard unsnapped and set at the reef ball. It wasn't fun at all. But once I got the main reefed, we screamed in towards shore with all that wind. Didn't capsize either. It was great until the storm passed and we were hit by a calm with about a mile to go and had to paddle in by hand the rest of the way. Man were my arms sore the next day. You were lucky you had reef points in the main. I hate halyard locks, had a few similar episodes with them, but they do reduce compression on the mast. Summer T-storms are a way of life. .... If one cannot accept that, and learn capsize drills, then one should not be sailing small boats. I agree that it's good to practice capsizing and righting small sailboats. Having righting lines rigged on the hobie make it a lot easier. But I still stand by my statement that you can sail one for years without ever capsizing if you don't push the boat to the point where one of the hulls comes out of the water and if you keep your weight aft so you don't sink the forward part of a hull. Obviously, it can be done. i wouldn't count on it though. And I wouldn't sit too far aft. Fresh Breezes- Doug King |
#22
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If you're flying a hull in a Hobie 16, you're courting a capsize. They
simply don't have enough reserve bouyancy. Steven Shelikoff wrote: Which is why I said, if you don't want to capsize, keep both hulls in the water. Or just leave it upside down to start with ... And it's not reserve bouyancy that's the problem *if* you keep your weight aft when flying (moving too far foward is when you pitchpole). It can still pitchpole if the bow digs in hard enough, such as when encountering a big wake. And can capsize no matter what the fore/aft weight placement if one hull submerges enough to lose righting moment. ... It's the fact that unlike a balasted monohull, righting moment decreases with increasing heel. The thing that saves you is that the side force from the wind decreases with increasing heel Until it gets under the tramp. .... so it's not hard to find a balancing point. Agreed, it's not too difficult. It's certainly much easier to sail a Hobie Cat than one of the double-trap skiffs. ... I like the thrill of hiking out on the trapeze while flying a hull low, or even with both in the water. The sense of speed is greater when your body is suspended way off the boat, just over the water. True. It's even better with a spinnaker IMHO. ... There's nothing like the thrill of being suspended just over the water while going 20kts. Of course, you can do that in a monohull too. But the difference is that you go way higher on a hobie cat when you start to heel more. I sailed a friends Mystere 6m a number of times. It had hiking wings, a very nice luxury, but when the boat heeled it put you *WAY* up in the air! The boat seems to sail fastest with one hull just barely out of the water. In theory, that should be correct. AFAIK it's true in practice as well. If you keep both hulls in the water, it can support a lot of weight. It's rated max capacity is 800lbs !!!! ... and I've had almost that much with no problem at all. Of couse you notice a difference in handling and responsiveness. But you're in no danger of capsizing if you keep both hulls in the water, which isn't hard to do with 800lbs on board. Can one hull support 800#? I'd be very very surprised. And my whole point has been that once one hull is fully laden, and starting to submerge, it contributes *nothing* to righting moment and the boat just falls over. I suggest that if you carry 800# on a Hobie Cat, you're flirting with this even if you don't realize it. Hardly. The Sunfish has a great deal of reserve bouyancy & stability. It probably has twice the hull volume (ie bouyancy) of the Hobie 16. Lol. Hit a Sunfish and a Hobie 16 broadside by a hugh cruiser wake and I gaurantee you that the sunfish will go over first. Not if the Sunfish doesn't have a very large & heavy klutz on board. I've never capsized a monohuls due to being hit by a wake, even when planing. OTOH I've seen Hobie 16s go over both by pitchpoling, tripping over a steep wake, and simply having the lee hull driven under. ... The form stability of the Hobie 16 (a wide catamaran) is many times greater than a Sunfish (a narrow monohull.) That's true, as long as both hulls have a remaining margin of freboard (un-immersed volume). You seem to keep skipping over this point. ... And you're wrong about the reserve bouyancy. The Hobie 16 has about 300lbs more than a Sunfish. Baloney. Look at the difference in hull volume... that *is* reserve bouyancy. Two long very skinny triangular hulls have less volume than one shallow V-bottom surfboard shaped hull... and the Hobie weighs more too. And again, which is why I say that if you want to assure that you're not going to capsize, keep both hulls in the water. IMHO it is both wrong, and dangerous, to try and tell people that they can guarantee not capsizing. Fresh Breezes- Doug King |
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