Participants in the Governors Island Swim will enter the water
from a ferry just off Castle Williams. The swimmers will head south
from the start and navigate around the southern tip of Governors
Island. As swimmers round the southern tip of the Island, they will
head north, proceeding up the Buttermilk Channel which lies between
Governors Island and Brooklyn. There are three large piers (Lima,
Tango, and Yankee) along this portion of the course. Swimmers are not
allowed to swim closer than 20 yards to the end of any pier.
After passing the third pier in the Channel, swimmers will start
rounding the northeast side of the Island. Swimmers will pass Dock
101 and head towards a barge finish located just before the Brooklyn-Battery Tunnel air vent.