Looks like they made the mistake of assuming that a nautical mile was 6000
feet when it's actually 6080 ft



"JJ Sinclair" wrote in message
...
feet per sec X 0.508 = meters per sec

This from the 1987 SSA MEMBERSHIP HANDBOOK.

Haven't seen an updated book in 20 years. It has lots of useful
information,
like this in it.
JJ Sinclair