05 Sep 95, Murray Cleland writes to Ed Debee:
 ED==>> Just thought I'd break in to let you know that a nautical mile is
 MC> approx 6080
 ED==>> feet.  The nautical mile is 1.1516 times larger than a statute mile.
 ED==>> Just thought you might be interested.
 MC> Thanks Ed.  I didn't know that until you and one other person
 MC> enlightened me.  I appreciate it.
Murray,
Glad to contribute.  As a side note, you should have seen my confusion when I 
went through the Radar Navigation course as part of Undergraduate Navigator 
Training in the Air Force.  There we had to convert between Statute, Nautical 
and Radar miles.  Talk about the need for standardization, ouch.
Enjoy the posts on boat speed.  I would add that the standard formula of 1.34 
times square root of waterline length is only an average.  For instance, my 
Precision is a semi-flat bottomed hull with shoal draft keel.  Computed hull 
speed is 5.95 knots.  However, if the heel is kept at 15 deg. and the wind is 
on some part of the beam, I can usually hold 6.2 knots.  This is due to the 
hull starting to rise up in the water, reducing the wetted surface drag. 
Downwind, with gusts and surfing, we have seen 9.2 knots.  But this skipper 
doesn't like the feel of the helm.  Tricky.
Have fun,
Ed DeBee
Skipper of Revelation
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