The 35 foot fishing vessel Little Hunter sank just outside Gloucester harbor, Massachusetts.   The master on the Little Hunter had contacted the Coast Guard that the vessel was taking on water and needed assistance.   The Coast Guard launched the 25-foot response boat to the scene.  In addition, the vessel Andrew and John reached the scene to assist.  The rescue crew attempted to setup a pump to dewater the fishing vessel, but it was too late.  The Little Hunter sank just outside the harbor.   The Coast Guard is monitoring the area as pollution was released when the fishing vessel sank.   Reports state the vessel had 40 gallons of diesel fuel on board.   No one was injured.   An investigation into the sinking will be conducted.   The owner of the Little Hunter will arrange to raise and salvage the vessel.