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  2. Patrol torpedo boat PT-657 - Wikipedia

    en.wikipedia.org/wiki/Patrol_torpedo_boat_PT-657

    Motor torpedo boat PT-657 is a PT-657-class Higgins 78-foot (24 m) PT boat, built for the United States Navy during World War II. PT-657 was built at Higgins Industries in New Orleans, Louisiana. PT-657 part of United States Navy order for boats: PT-625 to PT-660.

  3. Yard patrol boat - Wikipedia

    en.wikipedia.org/wiki/Yard_patrol_boat

    Following the attack on Pearl Harbor the United States Navy leased California-based tuna boats for the duration of the war or "until victory". [1] On 16 February 1942, San Diego Port Director Commander W.J. Morcott called a meeting of tuna skippers and crews at the Naval Reserve Armory telling the men "The Navy needs men to man the [clippers] – experienced men, like yourselves.

  4. Mark 24 mine - Wikipedia

    en.wikipedia.org/wiki/Mark_24_mine

    The guidance system used four hydrophones on the torpedo's midsection, connected to a vacuum tube-based sound processing array. A Bell proportional navigation and HUSL non-proportional steering system were demonstrated by July 1942. The body was a modification of the Mark 13 torpedo. Length, diameter, and weight were reduced.

  5. PT boat - Wikipedia

    en.wikipedia.org/wiki/PT_boat

    PT-105, an 80' Elco boat, under way. A PT boat (short for patrol torpedo boat) was a motor torpedo boat used by the United States Navy in World War II.It was small, fast, and inexpensive to build, valued for its maneuverability and speed but hampered at the beginning of the war by ineffective torpedoes, limited armament, and comparatively fragile construction that limited some of the variants ...

  6. G7a torpedo - Wikipedia

    en.wikipedia.org/wiki/G7a_torpedo

    It was Kriegsmarine's first operational torpedo (hence "TI" = Torpedo number one), and the standard issue torpedo for all German U-boats and surface torpedo-bearing vessels from 1934 to the end of WW2. The GA VIII gyroscope, as used in the G7a(TI) torpedo. The torpedo was a straight-running unguided design, controlled by a gyroscope. The TI had ...

  7. AN/SLQ-25 Nixie - Wikipedia

    en.wikipedia.org/wiki/AN/SLQ-25_Nixie

    It was to feature an open architecture, allowing it to serve as a host to other systems and support their information gathering and threat detection. [7] In 2012, the AN/SLQ-25D program became a part of the Surface Ship Torpedo Defense (SSTD) program, a US Navy effort to field a system that could detect and destroy incoming torpedoes.

  8. Mark 13 torpedo - Wikipedia

    en.wikipedia.org/wiki/Mark_13_torpedo

    Mark 13 torpedo's general arrangement, as published in a service manual Douglas TBD Devastator making a practice drop with a Mark 13 torpedo, October 20, 1941. Originating in a 1925 design study, the Mark 13 was subject to changing USN requirements through its early years with resulting on-and-off development.

  9. Steam gun boat - Wikipedia

    en.wikipedia.org/wiki/Steam_Gun_Boat

    The steam gun boats were conceived to answer the seeming need for a craft which was large enough to put to sea in rough weather and which could operate both as a "super-gunboat" and a torpedo carrier, combining the functions of the motor gunboat (MGB) and motor torpedo boat (MTB) in the same fashion as did the German E-boats.