The US Coast Guard has called off the search for two crew members who were missing after a tank barge suffered an explosion off Texas.

Authorities had been searching for two men from the Bouchard Transportation's 9,800-gt B No 255 (built 1999) after the Friday morning incident.

The 158,000-barrel black oil barge suffered a fire and explosion while off Port Aransas, touching off a search for two crewmen who were unaccounted for.