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2. Topping lift - Wikipedia

   en.wikipedia.org/wiki/Topping_lift

   Topping lift. The topping lift (more rarely known as an uphaul) is a line which applies upward force on a boom on a sailboat . Part of the running rigging, topping lifts are primarily used to hold a boom up when the sail is lowered. [ 1] This line would run from near the free end of the boom (s) forward to the top of the mast.

3. Shiplift - Wikipedia

   en.wikipedia.org/wiki/Shiplift

   Shiplift. A shiplift is a modern alternative for a slipway, a floating dry dock or a graving dry dock. A shiplift is used to dry dock and launch ships. It consists of a structural platform that is lifted and lowered exactly vertically, synchronously by a number of hoists. First, the platform is lowered underwater, then the ship is floated above ...

4. Topsides - Wikipedia

   en.wikipedia.org/wiki/Topsides

   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. On an offshore oil platform, topsides refers to the upper half of the structure, above the ...

5. List of ship directions - Wikipedia

   en.wikipedia.org/wiki/List_of_ship_directions

   Bilge: the underwater part of a ship between the flat of the bottom and the vertical topsides [13] Bottom: the lowest part of the ship's hull. Bow: front of a ship (opposite of "stern") [1] Centerline or centreline: an imaginary, central line drawn from the bow to the stern. [1] Fore or forward: at or toward the front of a ship or further ahead ...

6. Rigging - Wikipedia

   en.wikipedia.org/wiki/Rigging

   Rigging comprises the system of ropes, cables and chains, which support and control a sailing ship or sail boat 's masts and sails. Standing rigging is the fixed rigging that supports masts including shrouds and stays. Running rigging is rigging which adjusts the position of the vessel's sails and spars including halyards, braces, sheets and vangs.

7. Forces on sails - Wikipedia

   en.wikipedia.org/wiki/Forces_on_sails

   At a stable angle of heel (for a sailboat) and a steady speed, aerodynamic and hydrodynamic forces are in balance. Integrated over the sailing craft, the total aerodynamic force (FT) is located at the centre of effort (CE), which is a function of the design and adjustment of the sails on a sailing craft.