APPENDIX I
US NAVY SHIP FORCE LEVELS, 1939–1945

	Battleships
6/30/1939	15
6/30/1940	15
12/7/1941	17
12/31/1942	19
12/31/1943	21
12/31/1944	23
8/14/1945	23
	Carriers, Fleet
6/30/1939	5
6/30/1940	6
12/7/1941	7
12/31/1942	4
12/31/1943	19
12/31/1944	25
8/14/1945	28
	Carriers, Escort
6/30/1939	0
6/30/1940	0
12/7/1941	1
12/31/1942	12
12/31/1943	25
12/31/1944	65
8/14/1945	71
	Cruisers
6/30/1939	36
6/30/1940	37
12/7/1941	37
12/31/1942	39
12/31/1943	48
12/31/1944	61
8/14/1945	72
	Destroyers
6/30/1939	127
6/30/1940	185
12/7/1941	171
12/31/1942	224
12/31/1943	332
12/31/1944	367
8/14/1945	377
	Frigates
6/30/1939	0
6/30/1940	0
12/7/1941	0
12/31/1942	0
12/31/1943	234
12/31/1944	376
8/14/1945	361
	Submarines
6/30/1939	58
6/30/1940	64
12/7/1941	112
12/31/1942	133
12/31/1943	172
12/31/1944	230
8/14/1945	232
	Mine Warfare
6/30/1939	29
6/30/1940	36
12/7/1941	135
12/31/1942	323
12/31/1943	551
12/31/1944	614
8/14/1945	586
	Patrol
6/30/1939	20
6/30/1940	19
12/7/1941	100
12/31/1942	515
12/31/1943	1,050
12/31/1944	1,183
8/14/1945	1,204
	Auxiliary
6/30/1939	104
6/30/1940	116
12/7/1941	210
12/31/1942	392
12/31/1943	564
12/31/1944	993
8/14/1945	1,267
	Surface Warships
6/30/1939	178
6/30/1940	237
12/7/1941	225
12/31/1942	282
12/31/1943	635
12/31/1944	827
8/14/1945	833
	Total Active
6/30/1939	380
6/30/1940	394
12/7/1941	478
12/31/1942	790
12/31/1943	1,782
12/31/1944	3,699
8/14/1945	6,768

September 1939: World War II begins in Europe when Germany and the USSR invade Poland

May 8, 1945: World War II ends in Europe

August 14, 1945: V-J Day (August 15 in the Western Pacific)

September 2, 1945: Pacific War formally ends

Source: Naval Historical Center