"R" Class Submarine (1917)

Twenty-seven "R" class submarines were completed for the U.S. Navy in 1918 and 1919.

Overview of 27 vessels
Citations for this data available on individual ship pages
Name	Builder	Laid Down	Launched	Completed	Fate
R-1	Fore River	16 Oct, 1917	24 Aug, 1918	16 Dec, 1918	Sold 1946
R-2	Fore River	16 Oct, 1917	23 Sep, 1918	24 Jan, 1919	Sold 1945
R-3	Fore River	11 Dec, 1917	18 Jan, 1919	17 Apr, 1919	Transferred 4 Nov, 1941
R-4	Fore River	16 Oct, 1917	26 Oct, 1918	28 Mar, 1919	Sold 1946
R-5	Fore River	16 Oct, 1917	24 Nov, 1918	15 Apr, 1919	Sold 1946
R-6	Fore River	17 Dec, 1917	1 Mar, 1919	1 May, 1919	Sold 1946
R-7	Fore River	6 Dec, 1917	5 Apr, 1919	1 May, 1919	Sold 1946
R-8	Fore River	4 Mar, 1918	17 Apr, 1919	21 Jul, 1919	Sank 1936
R-9	Fore River	6 Mar, 1918	24 May, 1919	30 Jul, 1919	Sold 1946
R-10	Fore River	18 Mar, 1918	28 Jun, 1919	20 Aug, 1919	Sold 1946
R-11	Fore River	18 Mar, 1918	12 Jul, 1919	5 Sep, 1919	Sold 1946
R-12	Fore River	28 Mar, 1918	15 Aug, 1919	23 Sep, 1919	Sunk 12 Jun, 1943
R-13	Fore River	27 Mar, 1918	27 Aug, 1919	17 Oct, 1919	Sold 1946
R-14	Fore River	6 Nov, 1918	10 Oct, 1919	24 Dec, 1919	Sold 1946
R-15	Union Iron Works	30 Apr, 1917	10 Dec, 1917	27 Jul, 1918	Stricken 1946
R-16	Union Iron Works	26 Apr, 1917	15 Dec, 1917	5 Aug, 1918	Sold 1946
R-17	Union Iron Works	5 May, 1917	24 Dec, 1917	18 Aug, 1918	Transferred 9 Mar, 1942
R-18	Union Iron Works		8 Jan, 1918		Sold 1946
R-19	Union Iron Works	23 Jun, 1917	28 Jan, 1918	7 Oct, 1918	Transferred 9 Mar, 1942
R-20	Union Iron Works	4 Jun, 1917	21 Aug, 1918	26 Oct, 1918	Sold 1946
R-21	Lake Torpedo Boat	19 Apr, 1917	10 Jul, 1918	17 Jun, 1919	Broken up 1930
R-22	Lake Torpedo Boat	19 Apr, 1917	23 Sep, 1918	1 Aug, 1919	Broken up 1930
R-23	Lake Torpedo Boat	25 Apr, 1917	5 Nov, 1918	23 Oct, 1919	Broken up 1930
R-24	Lake Torpedo Boat	9 May, 1917	21 Aug, 1918	27 Jun, 1919	Broken up 1930
R-25	Lake Torpedo Boat	26 Apr, 1917	15 May, 1919	23 Oct, 1919	Broken up 1930
R-26	Lake Torpedo Boat	26 Apr, 1917	18 Jun, 1919	23 Oct, 1919	Broken up 1930
R-27	Lake Torpedo Boat	16 May, 1917	23 Sep, 1918	3 Sep, 1919	Broken up 1930

Torpedoes

Electric Boat design:

• four 21-in tubes with 8 torpedoes

Lake design:

• four 18-in tubes with 8 torpedoes

Guns

• one 3-in/50

See Also

• Wikipedia

Bibliography

• Gray, Randal (editor) (1985). Conway's All the World's Fighting Ships 1906–1921. London: Conway Maritime Press. (on Amazon.com and Amazon.co.uk).