PRODUCTION. For obtaining the benefits of trading with our colonies, it is necessary that the goods be accompanied by a "certificate of production" in the manner required by marine law. (See [Origin].)
PROFILE DRAUGHTS. In naval architecture, a name applied to two drawings from the sheer draught: one represents the entire construction and disposition of the ship; the other, her whole interior work and fittings.
PROFILE OF A FORT. See [Orthographic Projection].
PROG. A quaint word for victuals. Swift says, "In town you may find better prog." It is also a spike.
PROGRESSION. See [Arc of Direction].
PROJECTILES. Bodies which are driven by any one effort of force from the spot where it was applied.
PROJECTION. A method of representing geometrically on a plane surface varied points, lines, and surfaces not lying in any one plane: used in charts and maps, where it is of various kinds, as globular, orthographic, Mercator's, &c. In ship-building, an elevation taken amidship. (See [Body-plan].)
PROKING-SPIT. A long Spanish rapier.
PROMISCUI USUS. A law term for those articles which are equally applicable to peace or war.
PROMONTORY. A high point of land or rock projecting into a sea or lake, tapering into a neck inland, and the extremity of which, towards the water, is called a cape, or headland, as Gibraltar, Ceuta, Actium, &c.