[SOUNDBOUNDER]

You will need auxiliary power:

http://windom.cybox.com/photos/09.00/buoywake.jpg

http://www.danamorris.net/woodshole/current2.jpg

 

[SOUNDBOUNDER]

here is a quick read about it:

BSC Cruising Guide Woods Hole Navigation

One thing not mentioned is that there also can be a lot of commercial traffic.
Ferries, research vessels etc.

The Eldridge book has a chart of the harbor showing how strong the currents are.