Skipjack tuna Skipjack tuna The skipjack tuna ("Katsuwonus pelamis") is a medium-sized perciform fish in the tuna family, Scombridae. It is otherwise known as the aku, arctic bonito, mushmouth, oceanic bonito, striped tuna, or victor fish. It grows up to 1 m (3 ft) in length. It is a cosmopolitan pelagic fish found in tropical and warm-temperate waters. It is a very important species for fisheries. It is a streamlined, fast-swimming pelagic fish, common in tropical waters throughout the world, where it inhabits surface waters in large shoals (up to 50,000 fish), feeding on fish, crustaceans, cephalopods, and molluscs. It is an
Skipjack-class submarine Fleet Reactor) during development. The S5W was used on 98 U.S. nuclear submarines of 8 classes and the first British nuclear submarine, , making it the most-used US Navy reactor design to date. "Skipjack" was authorized in the FY 1956 new construction program and commissioned in April 1959. Each hull cost around $40 million. "Skipjack" was certified as the "world's fastest submarine" after initial sea trials in March 1959, although the actual speed attained was classified. The "Skipjack"s remained the fastest US nuclear-powered submarines until the first of the "Los Angeles" class entered service in 1974. This was due to