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Sunk in the attack on Pearl Harbor, 7 December 1941 USS Arizona exploded and sank during the December 7, 1941 Japanese attack on Pearl Harbor . Salvaged artifacts from the USS Arizona , a battleship that was catastrophically sunk during the 1941 Japanese attack on Pearl Harbor , are displayed in several locations around the United States.
A D-ring used to secure cargo in a utility trailer (A) D-ring (shown in isometric view) (B) Weld-on pivot link; note the incorrect fillet weld call-out (bottom-right). The correct method of securing a weld-on pivot link is a [t weld] which consists of a perpendicular vee butt joint secured to the billet using a butt weld or fusion weld.
A padeye is a device often found on boats or ships that a line runs through or provides an attachment point. It is a kind of fairlead and often is bolted or welded to the deck or hull. It is also used in oil and gas projects to assist in the purpose of lifting.
HDMLs had a round bilge heavy displacement hull 72 feet (22 m) long with a beam of 16 feet (4.9 m) and a loaded draught of 5 feet (1.5 m). Loaded displacement was 54 tons. The hull had a pronounced flare forward to throw the bow wave clear and provided considerable lift to prevent all but the heaviest seas from coming aboa
The Dieppe Raid of 1942 had shown that the Allies could not rely on being able to penetrate the Atlantic Wall to capture a port on the north French coast. The problem was that large ocean-going ships of the type needed to transport heavy and bulky cargoes and stores needed sufficient depth of water under their keels, together with dockside cranes, to offload their cargo.
A trolling motor is a self-contained marine propulsion unit that includes an electric motor, propeller and control system, and is affixed to an angler's boat, either at the bow or stern. A gasoline-powered outboard used in trolling , if it is not the vessel's primary source of propulsion, may also be referred to as a trolling motor.
The blades of the rim-driven thruster, by contrast, are mounted on an outer ring rather than a central hub. The ring constitutes the rotor of an electric motor and sits within a surrounding stator, which is also ring-shaped and creates the necessary torque. Rotor and stator are water tight and the whole unit operates submerged.
An engine order telegraph or E.O.T., also referred to as a Chadburn, [1] is a communications device used on a ship (or submarine) for the pilot on the bridge to order engineers in the engine room to power the vessel at a certain desired speed.