I-64 was an Imperial Japanese Navy Kaidai-class cruiser submarine of the KD4 sub-class commissioned in 1930. During World War II, she supported the Japanese...

most varied and powerful submarine fleets. The Imperial Japanese Navy (IJN) acquired its first submarines during the Russo-Japanese War on 12 December 1904...

I-8 was an Imperial Japanese Navy Junsen III (or J3)-type submarine commissioned in 1938 that served during World War II. Designed as submarine aircraft...

I-401 (伊号第四百一潜水艦, I-gō-dai yon-hyaku-ichi-sensuikan) was an Imperial Japanese Navy Sentoku-type (or I-400-class) submarine commissioned in 1945 for service...

I-17 was a Japanese B1 type submarine of the Imperial Japanese Navy which saw service during World War II. This long-range submarine cruiser spent the...

The Japanese submarine I-176 (I-76, until 20 May 1942) was a "Kaidai" type of cruiser submarine active in World War II. A KD7 sub-class boat, I-176 was...

I-62, later I-162, was a Kaidai-class cruiser submarine of the KD4 sub-class built for the Imperial Japanese Navy (IJN) during the 1920s and completed...

Ro-64, originally named Submarine No. 79, was an Imperial Japanese Navy Type L submarine of the L4 subclass. First commissioned in 1925, she served in...

I-68, later renumbered I-168, was an Imperial Japanese Navy Kaidai–type cruiser submarine of the KD6 sub-class commissioned in 1934. She served in World...

I-1 was a J1 type submarine of the Imperial Japanese Navy. She was a large cruiser submarine displacing 2,135 tons and was the lead unit of the four submarines...

I-26 was an Imperial Japanese Navy B1 type submarine commissioned in 1941. She saw service in the Pacific War theatre of World War II, patrolling off the...

I-70 was an Imperial Japanese Navy Kaidai-type cruiser submarine commissioned in 1935. While supporting the Japanese attack on Pearl Harbor at the beginning...

I-159, originally I-59, was an Imperial Japanese Navy Kaidai-class cruiser submarine of the KD3B sub-class in commission from 1930 to 1945. During World...

The second I-56 was an Imperial Japanese Navy Type B3 submarine. Completed and commissioned in June 1944, she served in the late stages of World War II...

I-61 was a Kaidai-class cruiser submarine of the KD4 sub-class built for the Imperial Japanese Navy (IJN) during the 1920s. She sank in an October 1941...

I-202 was the only one out of three I-201-class submarines of the Imperial Japanese Navy to be completed during World War II. The I-201 class were of...

I-177 was an Imperial Japanese Navy Kaidai-type cruiser submarine of the KD7 subclass commissioned in 1942. She served during World War II, patrolling...

I-66, later I-166, was a Kaidai-class cruiser submarine of the KD5 sub-class completed for the Imperial Japanese Navy in 1932. She served during World...

I-53, later I-153 (伊号第五三潜水艦, I-gō Dai-Hyaku-gojūsan sensuikan), later I-153 , was an Imperial Japanese Navy Kaidai-class cruiser submarine of the KD3A...

I-58, later I-158, was an Imperial Japanese Navy Kaidai-class cruiser submarine of the KD3A sub-class commissioned in 1928. During World War II, she supported...

I-69, later I-169, was an Imperial Japanese Navy Kaidai-class cruiser submarine of the KD6 sub-class commissioned in 1935. She served in World War II...

scrapped after the war. Following World War I, the Imperial Japanese Navy General Staff began to re-consider submarine warfare as an element of fleet strategy...

I-60 was an Imperial Japanese Navy Kaidai-class cruiser submarine of the KD3B sub-class commissioned in 1928. In 1939, she was involved in a collision...

I-51 (伊号第五一潜水艦, I-gō Dai Gojū-ichi sensuikan), previously Project S22 and Submarine No. 44, was a submarine in commission in the Imperial Japanese Navy...

I-57, later I-157, was an Imperial Japanese Navy Kaidai-class cruiser submarine commissioned in 1929. During World War II, she supported Japanese forces...

Ro-68 was an Imperial Japanese Navy Type L submarine of the L4 subclass. First commissioned in 1925, she served in the waters of Japan prior to World War...

I-75, later I-175, was an Imperial Japanese Navy Kaidai-type cruiser submarine of the KD6B sub-class commissioned in 1938. During World War II, she took...

I-6 was an Imperial Japanese Navy J2 type submarine commissioned in 1935. She was a large cruiser submarine that served in the Second Sino-Japanese War...

The Kaidai-type submarine (海大型潜水艦, Kaidai-gata sensuikan) was a type of first-class submarine operated by the Imperial Japanese Navy (IJN) before and...

invasion of Medan 13 March 1942: Japanese submarine I-64 sank the freighter Mabella in the Arabian Sea. 23 March 1942: Japan invaded and captured the Andaman...