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2. Portable boat lift - Wikipedia

   en.wikipedia.org/wiki/Portable_boat_lift

   A portable boat lift is not a boat lift which is commonly found attached to a dock. Although some devices allow one person to separate a boat from a trailer or lift a boat up and out of the water, they are not by definition portable. The term "boat lift" originally referred to lift locks. In modern usage the term "boat lift," as opposed to ...

3. Boat lift - Wikipedia

   en.wikipedia.org/wiki/Boat_lift

   A precursor to the canal boat lift, able to move full-sized canal boats, was the tub boat lift used in mining, able to raise and lower the 2.5 ton tub boats then in use. An experimental system was in use on the Churprinz mining canal in Halsbrücke near Dresden. It lifted boats 7 m (23 ft) using a moveable hoist rather than caissons.

4. Capstan (nautical) - Wikipedia

   en.wikipedia.org/wiki/Capstan_(nautical)

   The tensioned portion of the rope would fasten the ship to the quay, hoist a foresail, lift a spar into position on the mast or be used to transfer cargo to or from a dock or lighter. A capstan is a vertical- axled rotating machine developed for use on sailing ships to multiply the pulling force of sailors when hauling ropes, cables , and hawsers .

5. Fontinettes boat lift - Wikipedia

   en.wikipedia.org/wiki/Fontinettes_boat_lift

   The boat lift was built between 1885 and 1888 and worked until 1967. It was then replaced by a big, single lock (écluse des Fontinettes), built about 500m upstream. This lock can handle large barges and push-tows up to 144m long and 11.50m wide (or up to 6 smaller barges of Freycinet dimensions) and takes about 20–30 minutes to operate.

6. Headframe - Wikipedia

   en.wikipedia.org/wiki/Headframe

   Headframe of the #1 Shaft at Oyuu Tolgoi. A steel headframe is less expensive than a concrete headframe; the tallest steel headframe measures 87 m. [4] Steel headframes are more adaptable to modifications (making any construction errors easier to remedy), and are considerably lighter, requiring less substantial foundations.

7. Lake freighter - Wikipedia

   en.wikipedia.org/wiki/Lake_freighter

   Lake boats in the 600-and-700-foot (180 and 210 m) classes are more common, because of the limitations of the Welland Canal. These vessels vary greatly in configuration and cargo capacity, being capable of hauling between 10,000 and 40,000 tons per trip depending on the individual boat.

8. Gantry crane - Wikipedia

   en.wikipedia.org/wiki/Gantry_crane

   They have spans of 140 metres (460 ft) and can lift loads of up to 840 tonnes (830 long tons; 930 short tons) to a height of 70 metres (230 ft). In 2008, the world's strongest gantry crane, Taisun, which can lift 20,000 tonnes (19,700 long tons; 22,000 short tons), was installed in Yantai, China at the Yantai Raffles Shipyard.

9. Crane vessel - Wikipedia

   en.wikipedia.org/wiki/Crane_vessel

   A Sheer-legs barge is a barge with sheer-legs mounted at one end, which can lift loads and luff the sheer-legs to adjust the reach, but cannot swing the load independently of the hull orientation. A typical arrangement has a substantial A-frame hinged at the stern, supported by stays to the bow. When the load has been lifted, the barge is ...