HMS Holland 6

Holland 6 was originally a Holland-class submarine. But Holland 6 had many improvements made to her, and she was classed as the first of a class of 13 boats called the British A-class submarine.

See HMS A1 for details of her career in the Royal Navy.

References[]

• Submarines, War Beneath The Waves, From 1776 To The Present Day, by Robert Hutchinson.