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A slipway, also known as boat ramp or launch or boat deployer, is a ramp on the shore by which ships or boats can be moved to and from the water. They are used for building and repairing ships and boats, and for launching and retrieving small boats on trailers towed by automobiles and flying boats on their undercarriage .
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 ...
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these types of linkspans were less well designed for the various conditions of the tide, wave and current and so were superseded by underwater tank linkspans that through compressed air can be ...
[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 ...
The prototype is for a 4' mini ramp with deck. Each section is 8' wide and has one transition. Four such sections, welded together, would make a 16' wide mini ramp with 10' flat-bottom. The prototype drawing could be modified to make a spine ramp or to add bowl corners. The prototype could also be modified to make a taller mini ramp or vert ramp.
Extensions are permanent or temporary additions to the height of one section of the ramp that can make riding more challenging. Creating a spine ramp is another variation of the half-pipe. A spine ramp is basically two quarter pipes connected at the vertical edge. Half-pipe at Riverside Skatepark (designed by Andy Kessler) Manhattan, NYC - 2019
A grid deck uses beams and diaphragms as the supporting structure. The supporting system of a grid deck is analyzed using a grillage analysis. A slab deck is one where the deck is analyzed as a plate. If the slab has a stiffness that is different in two directions (at right angles), then the deck is known and analyzed as an orthotropic deck.
The topsides on a boat, ship, watercraft, or floating production storage and offloading (FPSO) vessel, is that part of the hull between the waterline and the deck. [1] It includes the visible parts of the bow, stern, sheer, and, if present, tumblehome.