Gross register tonnage ( GRT , grt , g.r.t. , gt ), or gross registered tonnage , is a ship's total internal volume expressed in "register tons", each of which is equal to 100 cubic feet (2.83 m ). Replaced by Gross Tonnage (GT), gross register tonnage uses the total permanently enclosed capacity of the vessel as its basis for volume. Typically this is used for dockage fees, canal transit fees, and similar purposes where it is appropriate to charge based on the size of the entire vessel. Internationally, GRT may be abbreviated as BRT for the German " Bruttoregistertonne ".
7-460: California Star was an 8,577 GRT refrigerated cargo liner that was built in 1945 as Empire Clarendon by Harland and Wolff Ltd, Belfast for the Ministry of War Transport (MoWT). In 1947 she was sold and renamed Tuscan Star , then Timaru Star in 1948. She was sold again in 1950 and was renamed California Star in 1959. She was scrapped in 1969. Harland and Wolff Ltd built
14-406: A migration period of 12 years to ensure that ships were given reasonable economic safeguards, since port and other dues are charged according to ship's tonnage. Since 18 July 1994 the gross and net tonnages, dimensionless indices calculated from the total moulded volume of the ship and its cargo spaces by mathematical formulae , have been the only official measures of the ship's tonnage. However,
21-730: Is not a measure of the ship's weight or displacement and should not be confused with terms such as deadweight tonnage or displacement . Gross register tonnage was defined by the Moorsom Commission in 1849. Gross and net register tonnages were replaced by gross tonnage and net tonnage , respectively, when the International Maritime Organization (IMO) adopted The International Convention on Tonnage Measurement of Ships on 23 June 1969. The new tonnage regulations entered into force for all new ships on 18 July 1982, but existing vessels were given
28-484: The ship at Belfast as yard number 1231. She was launched on 4 May 1945 and completed in October 1945. The ship was 457 feet 3 inches (139.37 m) long, with a beam of 63 feet 3 inches (19.28 m) and a depth of 30 feet 0 inches (9.14 m). Her tonnages were 8,577 GRT and 6,826 NRT . Accommodation was provided for 35 passengers. This was reduced to 12 in 1948. The ship
35-568: Was laid up in the River Blackwater , Essex . Re-entering service by July 1968, she served until 1969, when she was sold to Tsuan Yau Steel & Iron Works Co Ltd. She arrived on 21 April 1969 at Kaohsiung , Taiwan for scrapping, which was commenced on 20 May 1969. Gross register tonnage Net register tonnage subtracts the volume of spaces not available for carrying cargo, such as engine rooms, fuel tanks and crew quarters, from gross register tonnage. Gross register tonnage
42-562: Was placed under the management of the Blue Star Line Ltd . In 1947 she was renamed Tuscan Star , followed by another renaming to Timaru Star in 1948. In 1949, she was sold to Lamport & Holt Line Ltd , Liverpool . She was renamed California Star in 1958, and sold to the Blue Star Line Ltd in 1959. With the introduction of IMO Numbers , 5058002 was allocated to California Star . In March 1968 California Star
49-458: Was propelled by a Burmeister & Wain -type two-stroke single cycle double-acting marine Diesel engine that had eight cylinders of 21 + 1 ⁄ 2 inches (55 cm) diameter by 63 inches (160 cm) stroke. Empire Clarendon was built for the MoWT. She was a sister ship to Empire Abercorn . On 27 November 1946, Empire Clarendon was sold to Frederick Leyland & Co Ltd. She
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