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William Falconer's Dictionary of the Marine |
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Table of Contents
CCABIN to To CALK, or CAULK CALL to CANNON CANNON to CANOE CANOE to To rig the CAPSTERN Surge the CAPSTERN to CARPENTER of a ship CARTEL to CATS-PAW CAULKING to CHANNEL CHANNELS to CHEARLY CHEEKS of the mast to CLINCH CLINCHER-WORK to COASTING-PILOT COAT to COLLIERS COLOURS to COMPASS COMPASSING to COVE COUNTER to CRAWL CREEPER to CROW-FOOT CROWNING to CUT-WATER CROWNING CRUISE CUDDY CUNNING CURRENTCUTTER CUTTING-DOWN LINE CUT-WATER Search Contact us |
## CURRENT (continued)If a current sets directly against the ship's course, then her motion is retarded in proportion to the strength of the current. Hence it is plain, 1. If the velocity of the current be less than that of the ship, then the ship will advance so much as is the difference of these velocities. 2. If the velocity of the current be more than that of the ship, then will the ship fall as muchastern as is the difference of these velocities. 3. If the velocity of the current be equal to that of the ship, then will the ship stand still, the one velocity destroying the other.
If the current thwarts the course of a ship, it not only diminishes or increases her velocity, but gives her a new direction, compounded of the course the steers, and the setting of the current, as appears by the following If a body at A be impelled by two forces at the same time, the one in the direction A B, carrying it from A to B in a certain space of time, and the other in the direction A D, pushing it from A to D in the same time; complete the parallelogram A B C D, and draw the diagonal A C: then the body at A, (which let us suppose a ship agitated by the wind and current; A B being the line along which she advances as impressed by the wind, and A D the line upon which she is driven by the current) will move along the diagonal A C, and will be in the point C, at the end of the time in which it would have moved along A D or A B, as impelled by either of those forces, (the wind or current) separately.
© Derived from Thomas Cadell's new corrected edition, London: 1780, page 93, 2004 Published by South Seas, using the Web Academic Resource Publisher To cite this page use: http://nla.gov.au/nla.cs-ss-refs-falc-0402 |