> Robert Lawson asks; > > Tell me more about what you could tell from observing their wake. How > does it look when the bow wake is over run? > Reply: Actually quite a lot of information could be gained from the wake. If you could accurately measure the angle of the wake from a photo you could determine the boat's speed. The size of the wake combined with the LWL would also tell you something about the boat's displacement (though I am afraid I am not smart enough to figure that one out, though it is possible I'm sure). When a boat overrides it's bow wake the wake has a series of overlapping diamond shaped patterns as viewed from above. This is a pretty well understood phenomenon with any fluid including air at supersonic speeds. I learned this from doing aerodynamics research for a defense contractor in the early eighties, playing around with toys in the water you can see this at much lower speeds than is required for air. and Patrick Maun ask: > My question is: when did you manage to see kayaking? Reply: I mentioned I happen to "catch" it, it was luck. The gym where I exercise at here in western Washington state has some kind of special sport cable service just for gyms and health clubs where they broadcast all kinds of sports all day long for the TVs that many gyms have hanging around now a days (I can do with out them personally). It was I think last Wednesday morning about 9:30 am west coast time, I saw the qualifying trials for both canoe and kayaks, both men's and women's, both one and two person canoes and kayaks. I do not know the final out come since I never saw the finals though the announcer said it was to happen the next day depending on the weather (the trials were delayed because of weather). I think the station may have had something to do with CNN sports but I'm not sure if that is the case with the Olympic coverage. I just got lucky it was on when I was there on a stationary bike, otherwise I do my best to ignore the TVs, I'd rather be reading, or re-reading an SK magazine. Peter *************************************************************************** PaddleWise Paddling Mailing List - All postings copyright the author and not to be reproduced/forwarded outside PaddleWise without author's permission Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
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