Was for another four Dumb Barges for Anglo Iranian Oil, they were smaller at 75 tons each, all with a length overall of 80 feet and a beam of 19 feet and draft of 5 feet and 6 inches.
(Some history of Anglo Iranian Oil Company Ltd)
The Anglo-Persian Oil Company (APOC) was founded in 1908 following the discovery of a large oil field in Masjed Soleiman, Iran. It was the first company using the oil reserves of the Middle East. APOC was renamed Anglo-Iranian Oil Company (AIOC) in 1935 and eventually became the British Petroleum Company (BP) in 1954, as one root of the BP Company today.
For more on this topic visit http://en.wikipedia.org/wiki/Anglo-Persian_Oil_Company