This is a simple listing of all commissioned U-boats during World War One (WWI).
U 1,
U 2,
U 3,
U 4,
U 5,
U 6,
U 7,
U 8,
U 9,
U 10,
U 11,
U 12,
U 13,
U 14,
U 15,
U 16,
U 17,
U 18,
U 19,
U 20,
U 21,
U 22,
U 23,
U 24,
U 25,
U 26,
U 27,
U 28,
U 29,
U 30,
U 31,
U 32,
U 33,
U 34,
U 35,
U 36,
U 37,
U 38,
U 39,
U 40,
U 41,
U 43,
U 44,
U 45,
U 46,
U 47,
U 48,
U 49,
U 50,
U 51,
U 52,
U 53,
U 54,
U 55,
U 56,
U 57,
U 58,
U 59,
U 60,
U 61,
U 62,
U 63,
U 64,
U 65,
U 66,
U 67,
U 68,
U 69,
U 70,
U 71,
U 72,
U 73,
U 74,
U 75,
U 76,
U 77,
U 78,
U 79,
U 80,
U 81,
U 82,
U 83,
U 84,
U 85,
U 86,
U 87,
U 88,
U 89,
U 90,
U 91,
U 92,
U 93,
U 94,
U 95,
U 96,
U 97,
U 98,
U 99,
U 100,
U 101,
U 102,
U 103,
U 104,
U 105,
U 106,
U 107,
U 108,
U 109,
U 110,
U 111,
U 112,
U 113,
U 114,
U 117,
U 118,
U 119,
U 120,
U 122,
U 123,
U 124,
U 125,
U 126,
U 135,
U 136,
U 137,
U 138,
U 139,
U 140,
U 141,
U 142,
U 151,
U 152,
U 153,
U 154,
U 155,
U 156,
U 157,
U 160,
U 161,
U 162,
U 163,
U 164,
U 165,
U 166,
U 167,
UB coastal boats:
UB 1, UB 2, UB 3, UB 4, UB 5, UB 6, UB 7, UB 8, UB 9, UB 10, UB 11, UB 12, UB 13, UB 14, UB 15, UB 16, UB 17, UB 18, UB 19, UB 20, UB 21, UB 22, UB 23, UB 24, UB 25, UB 26, UB 27, UB 28, UB 29, UB 30, UB 31, UB 32, UB 33, UB 34, UB 35, UB 36, UB 37, UB 38, UB 39, UB 40, UB 41, UB 42, UB 43, UB 44, UB 45, UB 46, UB 47, UB 48, UB 49, UB 50, UB 51, UB 52, UB 53, UB 54, UB 55, UB 56, UB 57, UB 58, UB 59, UB 60, UB 61, UB 62, UB 63, UB 64, UB 65, UB 66, UB 67, UB 68, UB 69, UB 70, UB 71, UB 72, UB 73, UB 74, UB 75, UB 76, UB 77, UB 78, UB 79, UB 80, UB 81, UB 82, UB 83, UB 84, UB 85, UB 86, UB 87, UB 88, UB 89, UB 90, UB 91, UB 92, UB 93, UB 94, UB 95, UB 96, UB 97, UB 98, UB 99, UB 100, UB 101, UB 102, UB 103, UB 104, UB 105, UB 106, UB 107, UB 108, UB 109, UB 110, UB 111, UB 112, UB 113, UB 114, UB 115, UB 116, UB 117, UB 118, UB 119, UB 120, UB 121, UB 122, UB 123, UB 124, UB 125, UB 126, UB 127, UB 128, UB 129, UB 130, UB 131, UB 132, UB 142, UB 143, UB 144, UB 145, UB 133, UB 136, UB 148, UB 149, UB 150, UB 154,
UC coastal minelayer boats:
UC 1, UC 2, UC 3, UC 4, UC 5, UC 6, UC 7, UC 8, UC 9, UC 10, UC 11, UC 12, UC 13, UC 14, UC 15, UC 16, UC 17, UC 18, UC 19, UC 20, UC 21, UC 22, UC 23, UC 24, UC 25, UC 26, UC 27, UC 28, UC 29, UC 30, UC 31, UC 32, UC 33, UC 34, UC 35, UC 36, UC 37, UC 38, UC 39, UC 40, UC 41, UC 42, UC 43, UC 44, UC 45, UC 46, UC 47, UC 48, UC 49, UC 50, UC 51, UC 52, UC 53, UC 54, UC 55, UC 56, UC 57, UC 58, UC 59, UC 60, UC 61, UC 62, UC 63, UC 64, UC 65, UC 66, UC 67, UC 68, UC 69, UC 70, UC 71, UC 72, UC 73, UC 74, UC 75, UC 76, UC 77, UC 78, UC 79, UC 90, UC 91, UC 92, UC 93, UC 94, UC 95, UC 96, UC 97, UC 98, UC 99, UC 100, UC 101, UC 102, UC 103, UC 104, UC 105,
UA
UA, U KUK U1, U KUK U10, U KUK U11, U KUK U12, U KUK U14, U KUK U15, U KUK U16, U KUK U17, U KUK U2, U KUK U20, U KUK U21, U KUK U22, U KUK U23, U KUK U27, U KUK U28, U KUK U29, U KUK U3, U KUK U30, U KUK U31, U KUK U32, U KUK U4, U KUK U40, U KUK U41, U KUK U43, U KUK U47, U KUK U5, U KUK U6,
