Son and messenger of the Greek Sea God and Goddess, Poseidon and Amphitrite.
Related Terms |
NIPPER
A Short rope used to bind a cable to the 'messenger' (a moving line propelled by the capstan) so that the cable is dragged along too (used where the cable is too large to be wrapped round the capstan itself). During the raising of an anchor the nippers were attached and detached from the (endless) messenger by the ship's boys. Hence the term for small boys: 'nippers'.
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MESSENGER
A small line used to heave in a heavier one.
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EKMAN WATER BOTTLE
A cylindrical tube fitted with plates at both ends and used for deepwater samplings; when hit by a messenger it turns 180 , closing the plates and capturing the water sample.
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HEAVING LINEA very light line that is thrown between the ship and the berth used to draw a messenger line ashore. |
NANSEN BOTTLE
A bottlelike water-sampling device with valves at both ends that is lowered into the water by wire; at the desired depth it is activated by a messenger which strikes the reversing mechanism and inverts the bottle, closing the valves and trapping the water sample inside. Also known as Petterson-Nansen water n-body problem depth for navigation purposes.
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SEA
Ship Event Analysis
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AHD
Australian Height Datum adopted by the National Mapping Council for vertical control for mapping (mean sea level 1966-68).
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ABYSSAL GAP
A narrow break in a sea floor rise or between two abyssal plains.
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A.H.D.
Australian Height Datum adopted by the National Mapping Council for vertical control for mapping (mean sea level 1966-68).
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ARMING THE LEAD
Placing tallow in the recess in the bottom of the sounding lead to ascertain the nature of the sea bed.
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