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Engine room sea water valves. 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.
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The sheet has a solid end and a flow-through end; sliding it from one position to the other opens or stops the flow. Also called sliding blind valve; Outflow valve: regulates flow and pressure, part of cabin pressurization; Pilot valve: regulates flow or pressure to other valves; Petcock, a small shut-off valve
A tugboat, or tug, is a boat used to maneuver large ships in harbours, over the open sea, or through rivers and canals. They also tow barges , disabled ships, and oil rigs . Equipped with powerful engines producing thousands of horsepower, extensive rigging equipment, and a fender of tires for protection, tugboats can push or tow large vessels ...
A johnboat in Florida, 1972 A small modern johnboat in the bed of a pickup truck. A johnboat [1] is a flat-bottomed boat [2] constructed of aluminum, fiberglass, wood, or polyethelene with one, two, or three seats, usually bench type.
A blowdown valve (BDV) is a type of shutdown valve designed to depressurize a pressure vessel by directing vapour to a flare, vent or blowdown stack in an emergency. BDVs fail-safe to the open position upon failure of the control system. [1] The type of valve, type of actuation and performance measurement are similar to an ESD valve.
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.
Kingston valves of the Argonaute can be seen on her keel. A Kingston valve is a type of valve fitted in the bottom of a ship's plating [1] that connects the sea to the ship's piping and storage tanks. 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]