HMS S1

Two Royal Navy ships have been called HMS S1:

• HMS S1 (1914), launched in 1914, was the lead boat in her class of submarines.
• HMS S1 was originally an experimental submarine, HMS Swordfish, the only member of her class and launched in 1916. The submarine was converted to a surface patrol boat in 1917 and renamed HMS S1.

• Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.

List of ships with the same or similar names

This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.