Berth. Place in which a vessel is moored or secured. Space around a vessel at anchor, and in which she will swing. An allotted accommodation in a ship. Employment aboard a ship. To berth a vessel is to place her in a desired or required position.
Berth and Space.Alternative form of 'Room and Space'.
Beset. Said of a vessel when she is entirely surrounded by ice.
Besselian Day Numbers. Quantities given in 'Nautical Almanac' for place of a star. They yield necessary corrections for long period precession, nutation and aberration.