Following the salvage work of the New Orleans-based and family-owned Bisso Marine company. In the opener, an attempt is made to raise the leg of a sunken oil rig from the ocean floor.

Included: the raising of a three-story drilling ship that fell on its side.

A tanker and an oil barge collide on the Mississippi River, and oil leaks from the wreckage and must be stopped before an explosion occurs.

An oil rig rests on a fuel pipeline and must be towed away before it punctures the pipe; and a barge carrying sulphuric acid is stuck in a swamp.

A beached tugboat is retrieved. Also: a sunken dry dock.

A supply ship runs aground in a tropical storm, and a pulley system is rigged to free it. Also: a barge is lifted out of the Mississippi River.