Trim Indicator. Instrument for measuring and indicating the longitudinal inclination of a vessel.
Trimmer. Man who shovels bulk cargo, particularly coal, from hatchway to the wings and under deck spaces in a hold. 2. Fireman who shovels coal from bunker to a position nearer to stokehold.
Trimming. Adjusting. Applied to cargo, denotes placing it in its proper position and, if necessary, winging it out. Applied to a vessel, denotes placing and arranging cargo so that there is a desired relationship between the forward and after draughts. Trimming a bunker is passing the coal in it to another bunker, or to a position where it will be handy for feeding fires. Trimming yards and sails is carefully adjusting them so that the maximum wind effect is obtained.
Trinity House. Short name for the 'Guild or fraternity of the most glorious and undivided Trinity and of St. Clements', chartered by Henry VIII and established at Deptford - where pilots boarded outgoing vessels. Its first duties embraced the supervision of construction of ships for the Royal Navy. In 1604 it divided into Elder Brethren and Younger Brethren, the latter being an honorary rank. Was dissolved by Parliament in 1647, but reconstructed in 1660. Now mainly concerned with lights, buoyage, and other navigational aids, and as nautical advisers in the Admiralty Division of the High Courts of Justice.