While back loading cargo, (a nitrogen tank), the deck crew of a supply boat hooked up the crane to the cargo. When the crane operator hoisted the tank approximately 4 m from the deck, he found that he could not boom up. He motioned to the deck crew to put the cargo back on the deck; however, the deck was filled with other cargo. The boat captain attempted to maneuver the vessel to the exact position vacated by the nitrogen tank; however, this maneuvers proved to be very difficult in the existing conditions. As the tank was being lowered, it contacted the existing cargo, resulting in damage to a couple of pallets of chemicals which were ripped open as a result of the contact.
What Went Wrong:
- No clear communication was established between the crane operator and boat captain because the crane operator did not have a radio while making the lift.
- The crane operator made a snap decision to begin the lift in spite of improper lifting conditions.
- There were no contingency plans developed to deal with unexpected problems.
Lessons Learned:
- Think before you act: No snap decisions
- Plan work and complete a Job Hazard Analysis before starting
- Ensure communication channels are open
- Stop the operation if risks arise
