Early on the morning of December 19, 1972, the Sea Star and the Horta Barbosa collided in the Gulf of Oman.
Both vessels caught fire, and were abandoned by their crews. The Horta Barbosa fire was extinguished within a day. The Sea Star drifted SSE, leaking burning oil from a forty-foot hole in its side.
The Sea Star was taken undertow by Awal Contracting and Trading Company tug while still on fire on December 21. Occasional explosions rocked the vessel, and eventually caused it to sink at 25 04 N, 058 12 E on December 24, 1972.