Oltenia - was built for Steaua Romana SA Pentru Industria Petroleului, Bucharest,Romania. In 1941 was seized by Britain and renamed Oltenia II SS. She was a Steam Tanker of 6,394 tons built in 1928. On the 8th january 1943 when on route from Trinidad to Gibraltar carrying a cargo of 9,086 tons of furnace oil, a consignment of 732 barrels of lubricating oil, 1,000 sten guns and 500,000 rounds of ammunition and tobacco she was torpedoed by German submarine U-436 and sunk by gunfire.
Independenţa(The Indepence) - was the first of a series of five Romanian supertankers which were constructed by Santierul Naval Constanţa in the 1980s.Independenţa was a 1977 Romanian-flagged crude oil carrier, the biggest ship of the Romanian commercial fleet at that time. She collided in 1979 with a Greek freighter at the southern entrance of Bosphorus, Turkey and exploded. She caught fire and grounded.From 17 to 27 November, there was slight leakage from the tanker. Another major explosion occurred onboard the vessel on the night of 6 December at 10:40 p.m., which resulted in more oil spillage.The slick from the vessel drifted towards the Port of Haydarpaşa, and the booms across its entrance could not prevent approximately 50 tons of oil entering the harbor. The tanker continued to burn until 14 December. Heavy oil contamination formed on the surface of the sea and on the heavily built-up shores and the recreational beaches of the Sea of Marmara and the Istanbul Strait.It was estimated that 30,000 tons of crude oil burned and that the remaining 64,000 tons spilled into the sea. Because of the rapid evaporation of the light components, the crude oil quickly sank to the bottom of the sea in an area approximately 5.5 km in diameter.
Unirea (The Union) - broke up and sank at the beginning of the 1980s in Bulgarian waters of the Black Sea. Official reports claim that the accident was caused by a collision with a World War II mine. Unirea was a Romanian-flagged crude oil carrier, one of the biggest ships of the Romanian commercial fleet. She broke up and sank in 1982 in the Bulgarian waters of the Black Sea, 40 nautical miles (74 km) south-south east of the Cape Kaliakra at a depth of 1,400 metres (4,600 ft) after a mysterious explosion.The exact cause of accident is unknown but official reports suggest that during a vapor evacuation of the central number 3 tank an explosive mixture formed alongside the evacuation hole that could have been ignited by multiple sources but especially electrostatic energy. The explosion of the central number 3 tank had a devastating effect on the integrity of the ship triggering a series of explosions that destroyed the separating wall of the central and starbord tanks favoring the expansion of the volatile elements across the ship. The fire that followed also contributed to the vertical breaking of the ship's shell and the eventual sinking. Other official reports claim that the accident was caused by a collision with a World War II mine. A different opinion (unofficial) came from some naval architects and marine engineers stating that the ship broke up because of incorrect ballasting (the ship had no cargo at the moment of the accident). The Romanian shipping company "Navrom" claimed the insurance payout, amounting to US$ 36.6 million. This action resulted in a thorough inspection of the ship's wreck by independent survey teams, employed by the insurance company from Lloyd's Register, Japan. As the inspection did not reveal any major faults in construction, the insurance was finally paid.
Biruinţa (The Victory) - Owned and managed by the then Romanian state owned Shipping Company (Navrom). In the 1990s the ship was passed to the Romanian private shipping company "Petromin", changing its name to Iris Star. Finally the ship was bought by the Romanian shipping company Histria Shipmanagement having its name changed again to Histria Crown. The ship was finally decommissioned after more than 20 years of service in 2006.
Libertatea (The Liberty) - had the same history (including ownership) as her older sister Biruinta with the only exception that the ship is still in operation under the name Histria Prestige.
Pacea (The Peace) - was never fully completed. Oil tanker built in 1957 at Rotterdam, Netherlands ( gross tonnage: 12,377tons ).At the end of the 1980s it was passed to Czechoslovakia as a part of Romania's foreign debt.
Bustenari - oil tanker(39000TDW) built in Galati.
Bucsani - oil tanker built in 1987(actual name is Histria Topaz)
Prahova - crude oil tanker built in 1987 at Constanta, Romania ( gross tonnage: 50,571tons ).
Moreni - oil tanker built in 1971 at Giurgiu Shipyard .As a matter of fact there was an American oil tanker named after Moreni (notorious Romanian oil center) sunk in battle on June,12 1917. Standard Oil Steamer Moreni with a cargo of gasoline was fires 150 shots at U-Boat before she goes down.