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Leadline
| Морской словарь |
- [1] a weighted line used in fishing for holding down nets or traps. may have a lead filament or core (also called bottom line). [2] a depth-measuring device, originally used by the vikings, who dropped a lead-weighted line until it touched bottom, and then measured the length played out in terms of the length of outstretched arms, which they called fathmr. today we call it a fathom. [3] the modern leadline is made of 3?4-inch braided cotton twine in standard lengths of 20 fathoms for the traditional hand-thrown version and 100 fathoms for the deepsea type. the lead sinkers weigh 7 or 14 pounds (3 or 6 kg) and have a hollow at their ends that can be “armed” (filled) with soap or tallow to pick up a sample of the sea bed. the hand line has nine “marks” designed to be read by feel at night (experienced leadsmen often put them in their mouths, which tend to be more sensitive than work-hardened fingers). the marks are: • 2 fathoms two leather strips • 3 fathoms three leather strips • 5 fathoms white cotton calico • 7 fathoms red woolen bunting • 10 fathoms leather pierced with a round hole • 13 fathoms three leather strips (sometimes blue woolen serge) • 15 fathoms white cotton calico • 17 fathoms red woolen bunting • 20 fathoms leather with two round holes or light line with two knots it will be noted that marks for the second set of ten fathoms are virtually a repeat of those for the first, except that twelve fathoms is skipped and twenty is modified. intermediate “deeps” are unmarked, to be estimated by the leadsman on the basis of experience. a deepsea leadline is marked in the same way for the first twenty fathoms. thereafter it is marked with a knot every five fathoms and a double knot every ten fathoms, terminating with a strip of leather at 100 fathoms.
- Aweighted line used to take depth measurements.
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Originally, английский
Первоначально
Traditional, английский
A традиционный grammar
Experienced, английский
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Leatherneck, английский
U.s. slang for a marine (cf. bootneck).
Leading seaman, английский
A non-commissioned rank or rate in many navies, also known as leading rate. the military equivalent is corporal. in commonwealth navies a leading seaman rates above able seaman and below petty officer. the insignia is a fouled anchor in british and australian service; in the canadian navy it is two point down chevrons. the usn equivalent is petty officer 3rd class (e-4) whose insignia is an eagle over crossed anchors and a single point down chevron. (see also table 14.)
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