Thom Stewart wrote:

Your "What if" just doesn't play out. At 4.5 knots you would never
connect to a 15' line. CASE CLOSED!

1 knot = about 1.7 feet per second. At 1 knot, the free end of the 15' line
passes the MOB in 8.8 seconds. At 4.5 knots, it passes in 1.9 seconds.


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