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Although the traditional boat hook is still available, various different materials, such as aluminium and even a rolled up polymer are now available. [3] Although the boat hook is a general purpose reaching and holding-off tool on boats, there are more specialised forms, such as the Recovery Pole [4] designed for length rather than the rigid strength of a boat hook.
This kind of block makes a loaded line easier to hold by hand, and is sometimes used on smaller boats for lines like main and jib sheets that are frequently adjusted. A single, large, sail-powered warship in the mid-19th century required more than 1,400 blocks of various kinds.
Tugboat diesel engines typically produce 500 to 2,500 kW (~ 680 to 3,400 hp), but larger boats (used in deep waters) can have power ratings up to 20,000 kW (~ 27,200 hp) [citation needed]. Tugboats usually have an extreme power : tonnage -ratio; normal cargo and passenger ships have a P:T-ratio (in kW: GRT ) of 0.35 to 1.20, whereas large tugs ...
A hook is a hand tool used for securing and moving loads. It consists of a round wooden handle with a strong metal hook about 20 cm (8 inches) long projecting at a right angle from the center of the handle. The appliance is held in a closed fist with the hook projecting between two fingers.
A pelican hook is a piece of nautical rigging hardware It is composed of a hinged link held closed by a circumferential link capable of being released under load. Small examples are held closed by hand while the retaining link is displaced while larger examples are hit with a hammer or sledge hammer [ 1 ] [ 2 ] to release.
Dusky flathead, Platycephalus fuscus Dusky flathead are the largest of the many species of flathead found in Australia, and the most commonly caught. Dusky flathead have very rarely been caught at sizes up to 12–15 kg and lengths up to 1.3 metres, but average size is 0.5–1.5 kg and 40–50 cm. [4] Typically a fish of estuaries and estuarine lakes, dusky flathead are rarely found in other ...