Join Date: May 2002
Location: East Coast
Thanked 6 Times in 6 Posts
Rep Power: 17
You can take GPS readings to the bank. They are a measure of the boatspeed OVER the GROUND and given enough current, enough of a wave to surf down in a semi-displacement manner...any speed over the ground is possible.
The speed through the water in a displacement boat is another matter entirely and is limited to 1.34* the square root of the waterline length...in this case, about 6.7kts.
Given the tidal currents in Rammin's neck of the woods, I think the 15kts is quite possible as I've been in currents myself that took me from 5kts to 14kts in a matter of seconds and even Tartan 30's can surf a bit!
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