MARE ISLAND RESTRICTED AREA, 33 CFR 334.1100
No vessel except those with proper federal authorization shall enter the area within 91.4 meters/100 yards of the shore of Mare Island, from the Mare Island - Vallejo Fixed Bridge, around the southern end of the island, thence to the northwestern limit of the Navy Yard; nor shall vessels approach within 45.7 meters/ 50 yards of any part of the berthing piers at the Navy Yard, including piers 34 and 35 at the south end of the island.