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Initially a linkspan was a ramp that was attached to the pier at one end and was suspended above the water at the other. The height above the water was controlled either by hydraulic rams or cables, these types of linkspans were less well designed for the various conditions of the tide, wave and current and so were superseded by underwater tank linkspans that through compressed air can be ...
The company hired the up-and-coming civil engineer Thomas Bouch who argued for a train ferry with an efficient roll-on roll-off mechanism to maximise the efficiency of the system. [7] Custom-built ferries were to be built, with railway lines and matching harbour facilities at both ends to allow the rolling stock to easily drive on and off the ...
1: Funnel; 2: Stern; 3: Propeller and Rudder; 4: Portside (the right side is known as starboard); 5: Anchor; 6: Bulbous bow; 7: Bow; 8: Deck; 9: Superstructure. In naval architecture, an afterdeck or after deck, or sometimes the aftdeck, aft deck or a-deck is the open deck area toward the stern or aft back part of a ship or boat. The afterdeck ...
In naval architecture, a taffrail is the handrail around the open deck area toward the stern of a ship or boat. The rear deck of a ship is often called the afterdeck or poop deck. Not all ships have an afterdeck or poop deck. Sometimes taffrail refers to just the curved wooden top of the stern of a sailing man-of-war or East Indiaman ship.
The typical deck railing is generally built from pressure treated lumber. [14] Posts on a deck are also typically pressure treated wood and standard sizes are 4x4, 6x6, and 8x8. These posts give structural support to the railing assembly and are the most critical part for the safety of the guard rail assembly. [15]
A bow visor is a feature of some ships, in particular ferries and roll-on/roll-off ships, that allows the bow to articulate up and down, providing access to the cargo ramp and storage deck near the water line. [1] However, in modern ferry design over the last 45 years, bow visors have given way to clam doors. Instead of one large visor, two ...
Boat building is the design and construction of boats (instead of the larger ships) — and their on-board systems. This includes at minimum the construction of a hull , with any necessary propulsion, mechanical, navigation, safety and other service systems as the craft requires.
[1] [2] [3] Typically the smaller craft are powered by water-jets, and can drive themselves up the ramp by their own power. The stern launching ramps on the United States Coast Guard 's Marine Protector cutters developed by David Cannell naval architects require only a single crewmember to remain on deck when its short range prosecutor boat is ...
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