ON BOARD. Within a ship; the same as _aboard_.
ONCIA. A gold coin of Sicily; value three ducats, or 10_s._ 10_d._ sterling.
ONCIN. An offensive weapon of mediaeval times, consisting of a staff with a hooked iron head.
ON DECK THERE! The cry to call attention from aloft or below.
ONE-AND-ALL. A mutinous sea-cry used in the Dutch wars. Also, a rallying call to put the whole collective force on together.
ON EITHER TACK. Any way or every way; a colloquialism.
ON END. The same as _an-end_ (which see). Top-masts and topgallant-masts are on end, when they are in their places, and sail can be set on them.
ONE O"CLOCK. _Like one o"clock._ With speed; rapidly.
ONERARIae. Ancient ships of burden, with both sails and oars.
ONE, TWO, THREE! The song with which the seamen bowse out the bowlines; the last haul being completed by belay O!
ONION-FISH. The _Cepola rubescens_, whose body peels into flakes like that vegetable. It is of a pale red colour.
ON SERVICE. On duty.
ON-Sh.o.r.e WINDS. Those which blow from the offing, and render bays uncomfortable and insecure.
ON THE BEAM. Implies any distance from a ship on a line with her beams, or at right angles with the keel.
ON THE BOW. At any angle on either side of the stem up to 45; then it is either four points on the bow, or four points before the beam.
ON THE QUARTER. Being in that position with regard to a ship, as to be included in the angles which diverge from right astern, to four points towards either quarter.
OOMIAK. A light seal-skin Greenland boat, generally worked in fine weather by the women, but in bad weather by the men.
OPEN. The situation of a place which is exposed to the wind and sea.
Also, applied in meteorology, to mild weather. Also, open to attack, not protected. Also, said of any distant visible object.
OPEN HAWSE. When a vessel rides by two anchors, without any cross in her cables.
OPEN ICE. Fragments of ice sufficiently separate to admit of a ship forcing or boring through them under sail.
OPENING TRENCHES. The first breaking of ground by besiegers, in order to carry on their approaches towards a besieged place.
OPEN LIST. One of a ship"s books, which contains the whole of the names of the actual officers and crew, in order to regulate their victualling.
The crew are mustered by the open list.
OPEN LOWER DECKERS, TO. To fire the lower tier of guns. Also said of a person using violent language.
OPEN ORDER. Any distance ordered to be preserved among ships, exceeding a cable"s length.
OPEN PACK. A body of drift ice, the pieces of which, though very near each other, do not generally touch. It is opposed to close pack.
OPEN POLICY. Where the amount of the interest of the insured is not fixed by the policy, but is left to be ascertained by the insured, in case a loss shall happen.
OPEN ROADSTEAD. A place of hazard, as affording no protection either from sea or wind.
OPERATIONS. Field movements, whether offensive or defensive.
OPHIUCHUS. One of the ancient constellations, of which the lucida is _Ras-al-ague_, one of the selected nautical objects at Greenwich. This asterism is sometimes called _Serpentarius_, its Latin name, instead of its Greek.
OPINION. An experienced witness, who never saw the ship, yet may legally prove that from the description of her by another witness she was not sea-worthy.
OPOSSUM-SHRIMP. A crustacean, so named from its young being carried about in a sort of pouch for some little time after being hatched; the _Mysis flexuosus_ of naturalists.
OPPIGNORATION. The p.a.w.ning of part of the cargo to get money for the payment of the duty on the remainder.
OPPOSITE TACKS. Making contrary boards. Also, a colloquialism for cross purposes.
OPPOSITION. A celestial body is said to be in opposition to the sun when their longitudes differ 180, or half the circ.u.mference of the heavens.
OPTICK. An old term for a magnifying-gla.s.s.
ORAGIOUS. An old term for stormy or tempestuous weather:--
"The storme was so outrageous, And with rumlings oragious, That I did feare."
ORAMBY. A sort of state-barge used in the Moluccas; some of them are rowed by 40, 80, or even, it is said, 100 paddles each.
ORARIae. Ancient coasting vessels.
ORB. The circular figure made by a body of troops.
ORBIT. The path described by a planet or comet round the sun.
ORBITAL. Relating to the orbit of a heavenly body.
ORC. Wrack or sea-weed, used as manure on some of the coasts of England.
ORCA. A cla.s.sical name for a large voracious sea-animal, probably a grampus. Anglicized as ork or orc; thus in the second song of Drayton"s strange _Polyolbion_--
"The ugly orks, that for their lord the ocean woo."
And Milton afterwards introduces them--
"An island salt and bare, The haunt of seals and orcs, and sea-mews clang."
ORDER ARMS! The word of command, with muskets or carbines, to bring the b.u.t.t to the ground, the piece vertical against the right side, trigger-guard to the front.--_Open order_ and _close order_, are terms for keeping the fleet prepared for any particular manuvre.
ORDER-BOOK. A book kept for the purpose of copying such occasional successive orders as the admiral, or senior officer, may find it necessary to give.