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Old 10 July 2009, 03:58   #11
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Originally Posted by codprawn View Post
You could of course get a knotted piece of string and a log and time how fast the knots pass through your hand!!!
Cod - you've just reminded me what I did when I got my boat and wanted to see how fast it went. I had an anaemometer (sort of thing sailors use) and on a flat calm day used it to measure "air speed". Having now gone GPS I would say it was pretty accurate!
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Old 11 July 2009, 05:46   #12
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Speedometer

Thanks for all the advice. I'll look for a secondhand unit on ebay first, if no luck the dealer who sold me the boat has some at under 100, as suggested.
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Old 11 July 2009, 06:51   #13
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Remember a lot of phones have GPS now - if you have a suitable bit of software on it. Just remember to put the phone into a freezer bag first...........
Forgot about that! My Nokia N series has it, will try that later....
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