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  2. Stuffing box - Wikipedia

    en.wikipedia.org/wiki/Stuffing_box

    A small boat stuffing box comprising an adjusting nut, a locking nut and a sleeve. On a boat having an inboard motor that turns a shaft attached to an external propeller, the shaft passes through a stuffing box, also called a "packing box" or "stern gland" in this application. The stuffing box prevents water from entering the boat's hull.

  3. Butterworth cover - Wikipedia

    en.wikipedia.org/wiki/Butterworth_Cover

    When the service opening is not in use, it is sealed by a removable cover plate, commonly referred to as a Butterworth cover. [4] Butterworth hatches are not the main access hatches, but are the servicing hatches, and are generally closed with a metal cover plate with a gasket that is fastened to the deck by a number of bolts which stick up ...

  4. Seacock - Wikipedia

    en.wikipedia.org/wiki/Seacock

    A seacock is a valve on the hull of a boat or a ship, permitting water to flow into the vessel, such as for cooling an engine or for a salt water faucet; or out of the boat, such as for a sink drain or a toilet. Seacocks are often a Kingston valve. Seacocks are left open or are closed depending on the situation.

  5. List of patrol vessels of the United States Navy - Wikipedia

    en.wikipedia.org/wiki/List_of_patrol_vessels_of...

    Sold 3 March 1947 PE-39: 3 February 1919: 29 March 1919: 20 September 1919: Sold 7 June 1938 PE-40: 7 February 1919: 5 April 1919: 1 October 1919: Destroyed as target 19 November 1934 PE-41: 20 February 1919: 5 April 1919: 26 September 1919: Sold 11 June 1930 PE-42: 13 February 1919: 17 May 1919: 3 October 1919: Sold 11 June 1930 PE-43: 17 ...

  6. Outboard motor - Wikipedia

    en.wikipedia.org/wiki/Outboard_motor

    Basic parts of an outboard motor. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method of propelling small watercraft.

  7. Kingston valve - Wikipedia

    en.wikipedia.org/wiki/Kingston_valve

    A Kingston valve is a type of seacock. [1] It is arranged so that, under normal operating conditions, sea pressure keeps the valve closed. [2] When opened from the ship's interior, [3] the Kingston valve allows sea water to enter the tank. The mechanism was introduced in 1837 [4] by John Kingston (1786–1847), an English engineer after whom it ...

  8. United States Nasty-class patrol boat - Wikipedia

    en.wikipedia.org/wiki/United_States_Nasty-class...

    Following World War II the US Navy had little use for fast attack craft, and most of her PT boats were disposed of shortly after VJ Day.With the involvement in the Vietnam War the Navy saw a renewed need for small combatant craft for "brown water" operations, and they approached the Norwegian Westermoen company, which had built a prototype fast attack boat, the Nasty, and was currently ...

  9. Proportioning valve - Wikipedia

    en.wikipedia.org/wiki/Proportioning_valve

    A cross-section of a proportioning safety valve. A proportioning valve is a valve that relies on the laws of fluid pressure to distribute input forces to one or more output lines. Proportioning valves are frequently used in cars and other road vehicles to reduce the brake fluid pressure to the rear brakes. Due to weight distribution during ...

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