positioned low in the vessel. Two spare torpedoes, without warheads, were stowed on the starboard side of the torpedo room one above the other, with the warheads nearby on the flat. The torpedo hatch was mechanically-operated as in the E Class. Some records state that a 12-pounder gun was fitted but this would have been done after completion at Barrow.
All four V Class submarines were taken out of service in July 1919.
Nautilus was a bold experiment - with an increase in surface displacement and a change from the saddle tank type of construction to a double-hull. She was a twin shaft vessel with two Vickers diesel engines, each of 1850 hp, two main motors of 500 bhp and 352 Exide cells in two battery tanks.
