USS Seadragon (SS-194), a Sargo-class submarine, was the first ship of the United States Navy to be named for the leafy seadragon.
USS Scamp (SS-277), a Gato-class submarine, was the first ship of the United States Navy to be named for the scamp grouper, a member of the family Serranidae.
USS Grayback (SS-208), a Tambor-class submarine, was the first ship of the United States Navy to be named for the lake herring, Coregonus artedi. She ranked 20th among all U.S. submarines in total tonnage sunk during World War II, with 63,835 tons, and 24th in number of ships sunk, with 14. She was sunk near Okinawa on 27 February 1944. Her wreck was discovered in June 2019.
USS Flying Fish (SS/AGSS-229), a Gato-class submarine, was the first submarine and second ship of the United States Navy to be named for the flying fish. Flying Fish is credited with having sunk a total of 58,306 tons of Japanese shipping and received 12 battle stars for World War II service.
Tanikaze(谷風, Valley Wind) was one of 19 Kagerō-class destroyers built for the Imperial Japanese Navy during the 1930s, which saw extensive action throughout World War II, spending her early war career operating alongside Japanese aircraft carriers. Tanikaze was damaged by American dive bomber aircraft during the Battle of Midway, 6 June 1942, and helped to sink the light cruiser USS Helena at the Battle of Kula Gulf on 6 July 1943. Tanikaze was eventually torpedoed and sunk by the submarine USS Harder on 9 June 1944.
The Taiyō-class escort carrier was a group of three escort carriers used by the Imperial Japanese Navy (IJN) during World War II. Two of the ships were built as cargo liners in the late 1930s and subsequently taken over by the IJN and converted into escort carriers, while the third ship was converted while still under construction. The first ship converted, Taiyō, ferried aircraft and supplies to Japanese possessions before the start of the Pacific War in December 1941 and also served as a training ship between transport missions. Once the war began she did much the same for the newly conquered areas. Her sister ship, Un'yō did much the same in 1942. Chuyō, the last of the three to be converted, only ferried aircraft between Japan and the naval base at Truk before she was sunk by an American submarine in December 1943. Her sisters sometimes had other destinations other than Truk in 1943, but it was also their primary destination until they were damaged by American submarines in late 1943 or early 1944. After finishing their repairs in 1944, the sisters combined convoy escort duties with their transport missions and often ventured as far south as Singapore. Taiyō was the first of the pair to be sunk, torpedoed by an American submarine in August, with Un'yō following her sister a month later.
Ural Maru was a 6,377-ton Japanese merchant vessel, used as a transport ship and hospital ship during World War II. She was torpedoed and sunk with the loss of some 3,700 lives on 27 September 1944.
Kaiyō was an escort carrier operated by the Imperial Japanese Navy (IJN) during World War II. The ship was originally built as the ocean liner Argentina Maru. She was purchased by the IJN on 9 December 1942, converted into an escort carrier, and renamed Kaiyō. The ship was primarily used as an aircraft transport, escort carrier and training ship during the war. She was badly damaged by repeated air attacks in July 1945 and was scrapped in 1946–48.
The MV Kinai Maru was an 8360 gross ton freighter built by Mitsubishi Shipbuilding & Engineering Company Ltd, Nagasaki, Japan, in 1930 for Osaka Shosen Kaisha for the Yokohama-New York City cargo run.
I-10 was an Imperial Japanese Navy Type A1 submarine that served during World War II. Designed as a submarine aircraft carrier, she was commissioned in 1941 and supported the attack on Pearl Harbor, operated in the Indian Ocean — including support for the 1942 midget submarine attack on Diego Suarez — and in the New Caledonia and New Zealand areas, and took part in the Guadalcanal campaign and Marianas campaign before she was sunk in 1944 during her seventh war patrol.
Aikoku Maru (愛国丸) was an armed merchant cruiser of the Imperial Japanese Navy in World War II. The ship entered service in 1940, the ship was later converted to an ammunition ship. She was sunk in February 1944 during Operation Hailstone.
The Tokai Maru was a Japanese passenger-cargo ship built by the Mitsubishi Heavy Industries shipyard that was sunk in Apra Harbor, Guam, in 1943, during World War II.
SS Fuso Maru was a Japanese ocean liner that was torpedoed by the United States Navy submarine USS Steelhead (SS-280) in the South China Sea 280 nautical miles (520 km) northwest of Cape Mayraira, Luzon, the Philippines, at, while she was travelling in Convoy MI-11 from Moji, Japan, to Miri, Borneo.
Gokoku Maru (護國丸) was an armed merchant cruiser of the Imperial Japanese Navy in World War II, the last ship of the Hōkoku Maru class ocean liners. The ship entered service in 1942 and was employed mainly as a troop transport. She came under attack several times during her service career, and was sunk in a submarine attack in November 1944.
Hawaii Maru was a 9,482-ton Japanese troop transport during World War II, which sank on 2 December 1944 with great loss of life.
Akagi Maru was one of three Akagi Maru-class armed merchantmen of the Imperial Japanese Navy, and was launched in 1936. Akagi Maru was used initially used as a refrigerated cargo/passenger ship between ports in Japan, Europe and South America. The ship took part in World War II in the Pacific Ocean and was sunk with great loss of life by air attack on 17 February 1944 in Chuuk Lagoon as a part of the Allied Operation Hailstone.
Hōkoku Maru (報國丸) was an Hōkoku Maru-class ocean liner that served as an armed merchant cruiser in the Second World War. She was launched in 1939 and completed in 1940 for Osaka Shosen Lines.
CH-17 was a No.13-class submarine chaser of the Imperial Japanese Navy during World War II.
Hokkai Maru was a Kinai Maru-class auxiliary transport of the Imperial Japanese Navy during World War II. She participated in the Japanese occupation of British Borneo and was part of ill-fated convoy HI-71.
Nagara Maru was a Japanese cargo ship that was requisitioned by the Imperial Japanese Navy during World War II and converted into an auxiliary netlayer.
