Definitions for "Pelorus"
Keywords:  compass, vanes, sight, bearing, ship
An instrument similar to a mariner's compass, but without magnetic needles, and having two sight vanes by which bearings are taken, esp. such as cannot be taken by the compass.
A card marked in degrees and having sightings on it that is used to take bearings relative to the ship, rather than magnetic bearings as taken with a compass.
An instrument used on a vessel in connection with a current line and current pole to obtain the set of the current. In its simplest form, it is a disk about 8 inches in diameter and graduated clockwise for every 5° or 10°. It is mounted rigidly on the vessel, usually with the 0° mark forward and the diameter through this mark parallel with the keel. Bearings are then related to the vessel's compass and converted to true.
Pelorus is one of the largest private yachts in the world at 377 feet 3 inches (115 metres) in length. She was built at the Lürssen yard in Germany to the design of Tim Heywood and was launched in 2003. She was briefly owned by a Saudi businessman who sold her to Russian billionaire Roman Abramovich the following year.