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A helpful step, where possible (on a loose footed sail), is to disconnect the clew of the sail from the boom, which prevents the sail from scooping up water as the sail lifts out of the water. The bow of the capsized vessel should be pointed towards the wind so that when the sail starts to lift out of the water the wind can catch underneath the ...
By contrast, the British Enfield Pattern 1853, favored by the Confederate military, utilized a ladder-sight system with 100-yard (91 m) increments, using steps from 100 to 400 yards (91–366 m) and a flip-up ladder for ranges beyond 500 yards (460 m). While the Enfield's sights did allow more precise sighting, the simple flip-up leaves found ...
A pilot ladder has specific regulations on step size, spacing and the use of spreaders. It is the use of spreaders (long treads that extend well past the vertical ropes) in a pilot ladder that distinguishes it from a Jacob's ladder. When not being used, the ladder is stowed away, usually rolled up, rather than left hanging.
A loading dock leveler is a piece of equipment which is typically mounted to the exterior dock face or recessed into a pit at a loading dock. Commonly referred to as “bridging the gap”, a dock leveler allows for the movement of industrial vehicles (e.g. forklifts, pallet jacks ) between a building and a transport vehicle .
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FLIP was designed to study wave height, acoustic signals, water temperature and density, and for the collection of meteorological data. Because of the potential interference with the acoustic instruments, FLIP had no means of propulsion. It required towing to open water, where it drifted freely or was anchored. FLIP was 700 gross tons. It ...
Joseph Richard Winters (August 29, 1824 [1] – November 29, 1916) was an African-American abolitionist and inventor who, on May 7, 1878, received U.S. Patent number 203,517 for a wagon-mounted fire escape ladder. On April 8, 1879, he received U.S. Patent number 214,224 for an improvement on the ladder.
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