ABT Summer

Starting Date 
Tuesday, May 28, 1991
900 miles off coast of Angola, Africa
Estimated Spillage 
estimates range between 51 million and 81 million gallons

Liberian oil tanker carrying Iranian crude oil exploded, causing a three-day fire that ended with a sunken ship. Two tug boats and a plane attempted to extinguish the fire. Seven vessels rescued the crew (27), but one crew member was killed and four were reported missing (died).

Clean-up Efforts 

None, as it was expected that the high seas would break up the oil and there would be no environmental impact.


An 80-square-mile slick surrounded the tanker, but it is not known how much oil sank or burned.