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There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers) installed aboard surface vessels. Deck-mounted torpedo launchers are usually designed for a specific type of torpedo, while submarine torpedo tubes are general-purpose launchers ...
Most submarine deck guns were open, with or without a shield; however, a few larger submarines placed these guns in a turret. [citation needed] The main deck gun was a dual-purpose weapon used to sink merchant shipping or shell shore targets, or defend the submarine on the surface from enemy aircraft and warships.
The 1916 German Type U 139 submarine (WWI, 3 boats), which mounted two 15-centimetre (5.9 in) SK L/45 deck guns and two 8.8-centimetre (3.5 in) SK L/30 deck guns. [10] The 1923 HMS X1, which mounted two 5.2-inch (130 mm) guns in 2 twin turrets. [11] The 1934 French submarine Surcouf, which mounted two 203-millimetre (8 in) naval guns. [12]
When this happens wetted surface area drops radically and the boats accelerate up to 1.2 to 1.5 times the speed of the prevailing wind. These boats are very light (all up weight is less than 40 kg) and very fast, They hydrofoil in as little as 8 knots (15 km/h) of breeze ("sit on the deck breeze" for most dinghy classes).
Tap tails are normally 1 ⁄ 2 " or 12 mm in diameter for sinks and 3 ⁄ 4 " or 19 mm for baths, although continental Europe sometimes uses a 3 ⁄ 8 " (still imperial) size. The same connection method is used for a ballcock. The term tap is widely used to describe the valve used to dispense draft beer from a keg, whether gravity feed or ...
A deck is a permanent covering over a compartment or a hull [1] of a ship. On a boat or ship, the primary or upper deck is the horizontal structure that forms the "roof" of the hull, strengthening it and serving as the primary working surface. Vessels often have more than one level both within the hull and in the superstructure above the ...
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The deck forms a roof over the "poop cabin" in the aft of the ship. [26] pooped 1. (of a ship or boat) to have a wave break over the stern when travelling with a following sea. [27] This contingency, that can cause significant damage to the ship, is also referred to as "pooping". [28] 2. (colloquially) Exhausted. [27] port 1.