1.   Aircraft carriers and petroleum tankers will doubtless continue to ply the seas in their usual forms, irrespective of the new developments.

2.   The company is aiming the product at petroleum tankers.

3.   The oil spilled from the Panama-flagged Gaz Diamond, a liquid petroleum tanker, said Scott Casad, a Coast Guard spokesman.

4.   Troops are escorting petroleum tankers between depots and gas stations to prevent any violence.