B-class oil tankers were built by Chantiers de l'Atlantique, France in 1972 to 1975.

They served Gaz de France for around 14 years, the B-class vessels were acquired and delivered to BST in December 1986.

Previously referred to as the G-class vessels chartered under Shell Tankers United Kingdom (STUK).

[1] All B-class vessels have an average cargo capacity of 75,000 m3 (470,000 bbl) and are certified with the 'Green Passport' for the safe carriage of all hazardous materials on board.

In August 1980, off Okinawa, Japan, Gari received a distress call from a Soviet Russian Echo-class submarine.