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  2. Forces on sails - Wikipedia

    en.wikipedia.org/wiki/Forces_on_sails

    Right-hand boat: Up wind (close-hauled) with attached airflow—predominant lift component both propels the boat and contributes to heel. Points of sail (and predominant sail force component for a displacement sailboat). A. Luffing (no propulsive force) — 0-30°. B. Close-Hauled (lift)— 30-50°. C. Beam Reach (lift)— 90°.

  3. Boat lift - Wikipedia

    en.wikipedia.org/wiki/Boat_lift

    Boat lift. A boat lift, ship lift, or lift lock is a machine for transporting boats between water at two different elevations, and is an alternative to the canal lock. It may be vertically moving, like the Anderton boat lift in England, rotational, like the Falkirk Wheel in Scotland, or operate on an inclined plane, like the Ronquières ...

  4. Outboard motor - Wikipedia

    en.wikipedia.org/wiki/Outboard_motor

    Outboard motor. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method of propelling small watercraft. As well as providing propulsion, outboards provide ...

  5. Roll-on/roll-off - Wikipedia

    en.wikipedia.org/wiki/Roll-on/roll-off

    Procyon Leader stern quarter ramp. Roll-on/roll-off (RORO or ro-ro) ships are cargo ships designed to carry wheeled cargo, such as cars, motorcycles, trucks, semi-trailer trucks, buses, trailers, and railroad cars, that are driven on and off the ship on their own wheels or using a platform vehicle, such as a self-propelled modular transporter.

  6. Liftboat - Wikipedia

    en.wikipedia.org/wiki/Liftboat

    A liftboat is a self-propelled, self-elevating vessel used in support of various offshore mineral exploration and production or offshore construction activities. A liftboat has a relatively large open deck to accommodate equipment and supplies, and the capability of raising its hull clear of the water on its own legs so as to provide a stable ...

  7. Maritime response following the September 11 attacks

    en.wikipedia.org/wiki/Maritime_response...

    With about 130 to 150 boats being used in the response, ranging from Staten Island ferries that could hold about 6,000 people to rubber dinghies that could carry about two or three passengers at a time. [9] Patrol Boat Hocking of the U.S. Army Corps of Engineers en route to the site of the World Trade Center.

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