17 ordered by the Imperial Russian Navy, 11 delivered. G-1 (SS-19½) was given the number 19½ because SS- numbers were given after her decommissioning she was between SS-19 & SS-20.ģ originally ordered by U.S.
In 1920, the class was designated SS-20–SS-23. Known as "pig boats", or "boats", due to foul living quarters and unusual hull shape. Designed to survive flooding in one compartment.įirst US Navy diesel-powered submarine. Originally known as Viper class.ĭesigned by Lawrence York Spear. Last in series of Holland-like submarines. Essentially enlarged, more powerful Holland. Later renamed A class in November 1911, when Navy stopped naming submarines. Navy as it was the first officially commissioned submarine purchased on 11 April 1900. Purpose was to protect wooden ships against ironclads.ĥ others were made only Holland (SS-1) entered the U.S. In this list such single boat "classes" are marked with "(unique)".įirst submarine in the U.S. However, in general, all boats of a class are noticeably similar.Įxperimental use: an example is USS Albacore (AGSS-569), which used an unprecedented hull design. Also, boats are modified, sometimes extensively, while in service, creating departures from the class standard. Minor variations occur as improvements are incorporated into the design, so later boats of a class may be more capable than earlier. Submarines of the United States Navy are built in classes, using a single design for a number of boats.
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