A tank barge designed to supply fuel to small landing craft near the beaches. They were equipped with a 40-tonne fuel tank, sometimes divided in two to accommodate two types of fuel. They measured 80 to 90 feet long (approximately 24 to 27 m) and were equipped with a twin Lewis .303 calibre machine gun (i.e., 7.7 mm).

Find out more : note on ONI 226