BERM. In fortification, a narrow space of level ground, averaging about a foot and a half in width, generally left between the foot of the exterior slope of the parapet and the top of the escarp; in permanent fortification its principal purpose is to retain the earth of the parapet, which, when the latter is deformed by fire or by weather, would otherwise fall into the ditch; in field fortification it also serves to protect the escarp from the pressure of a too imminent parapet.

BERMUDA SAILS. See ['Mudian].

BERMUDA SQUALL. A sudden and strong wintry tempest experienced in the Atlantic Ocean, near the Bermudas; it is preceded by heavy clouds, thunder, and lightning. It belongs to the Gulf Stream, and is felt, throughout its course, up to the banks of Newfoundland.

BERMUDIANS. Three-masted schooners, built at Bermuda during the war of 1814; they went through the waves without rising to them, and consequently were too ticklish for northern stations.

BERNAK. The barnacle goose (Anser bernicla).

BERSIS. A species of cannon formerly much used at sea.

BERTH. The station in which a ship rides at anchor, either alone, or in a fleet; as, she lies in a good berth, i.e. in good anchoring ground, well sheltered from the wind and sea, and at a proper distance from the shore and other vessels.—Snug berth, a place, situation, or establishment. A sleeping berth.—To berth a vessel, is to fix upon, and put her into the place she is to occupy.—To berth a ship's company, to allot to each man the space in which his hammock is to be hung, giving the customary 14 inches in width.—To give a berth, to keep clear of, as to give a point of land a wide berth, is to keep at a due distance from it.

BERTH. The room or apartment where any number of the officers, or ship's company, mess and reside; in a ship of war there is commonly one of these between every two guns as the mess-places of the crew.

BERTH AND SPACE. In ship-building, the distance from the moulding edge of one timber to the moulding edge of the next timber. Same as room and space, or timber and space.

BERTH-DECK. The 'tween decks.