Sailing backwards

Yesterday the Kadizzilites spent a good bit of time on the water around New York City.  Kadizzle has often wondered what it would be like sailing around the city of New York.  The current in the waters surrounding the city is very strong. The captain of the boat that took us on tour said the current was flowing at four knots.  That means that if you are sailing against the current your boat is pointing one direction but actually sailing towards the stern until you reach four knots.  So if you are making a good six knots it only turns out to be two.  The old sailing ships coming and going must have had a hell of a time.  Of course with the current you get a big bonus.