Remarks: Two workers were using a crane to off-load materials onto an unmanned structure. Once off-loading operations were completed, the crane was left parallel to the platform heliport. When the assigned helicopter approached the heliport, the pilot maneuvered the tail boom of the aircraft in a direction towards the crane boom. The aircraft tail rotor blades struck the crane boom and 3 inches of the blade broke off from each end of the tail rotor blades.
 

Remarks: A steel hull shrimp trawler collided with a single satellite well resulting in an explosion and fire. All personnel abandoned the vessel and were rescued. All safety devices operated properly and closed off flow from the wells. G/L gas was shut in at the production facility. The fire was extinguished with the fire water system aboard the rescue vessel. The collision and subsequent explosion and fire resulted in severe damage to the satellite well. No injuries or pollution were reported
 

Remarks: A 166-ft workboat was tied up to the facility and came in contact with the CSC-4 column three times before it could be released. The captain reported that he had a hole in his fuel tank and was losing fuel and taking on water. An assistance call was placed to the U.S. Coast Guard. The vessel sustained structural damage along the starboard side and a hole in the diesel fuel day tank. The rig received structural damage to the CSC-4 column. The fuel loss was approximately 4,400 gal.
 

Remarks: A 166-ft supply workboat lost air pressure to its vessel controls resulting in loss of maneuverability. The vessel drifted into the floating drilling rig, sustaining a hole in the diesel fuel tank. A total of 1,000 gallons of diesel fuel was spilled. The rig sustained a 4x20 inch indentation to a column, which was determined to be cosmetic only.

Remarks: A marine vessel struck a caisson at 0400 hours on Dec 6, 1996. Some damage was sustained by the caisson, however, the boat was able to depart the scene under its own power. The caisson was flowing but was shut in after the accident. No pollution occurred.