[2] For surface running, they were powered by one 240-brake-horsepower (179 kW) gasoline engine that drove the single propeller shaft.

[3] B-2 was laid down by Fore River Shipbuilding Company in Quincy, Massachusetts, under subcontract from Electric Boat Company of New Suffolk, L. I., as Cuttlefish, making her the first ship of the United States Navy to be named for the cuttlefish, a 10-armed marine mollusk similar to the squid.

Cuttlefish operated along the Atlantic coast, running experiments, testing machinery and equipment, and conducting extensive training exercises until going into reserve at Charleston Navy Yard on 30 November 1909.

Sailing via the Suez Canal, Ajax arrived at Cavite, Philippine Islands on 30 April 1913, and B-2 was launched on 12 May.

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.