An incident occurred during a backloading operation involving two vessels. The event resulted in cargo becoming stuck after a collision on the receiving vessel’s deck. This summary outlines the sequence of events, contributing factors, and key safety lessons.
What Happened
During a backloading operation from one vessel to another, cargo was being lowered onto the receiving vessel’s main deck. The banksman signaled the crane operator to lower the hoist and disconnect the stinger. At that moment, the other vessel experienced sudden rolling, prompting the crane operator to adjust the winch to maintain the block’s position. When the winch was lifted again, the suspended cargo swung and struck other cargo already stowed on the receiving vessel’s deck, becoming stuck.
Why It Happened
The incident was primarily caused by the sudden rolling of one of the vessels, which led to instability in the cargo’s positioning. Limited clearance on the receiving deck created a high-risk environment for collision. Additionally, the cargo was not adequately stabilized during the lift, allowing it to swing unpredictably when hoisted. A delay in communication between the crane operator and the banksman during the vessel’s movement further contributed to the situation.
Actions Taken
The crane operator responded appropriately by not releasing the main block immediately, preventing uncontrolled movement of the cargo. Crew members quickly identified the issue and acted to prevent further damage or injury. The stowage plan was followed, and the banksman maintained proper signaling throughout the operation, which supported coordinated handling despite the unanticipated vessel motion.
Lessons Learned
- Conduct thorough toolbox talks focused on vessel motion risks before lifting operations.
- Reinforce the importance of exercising STOP WORK AUTHORITY when unexpected conditions arise.
- Ensure lifting risk assessments consider the possibility of vessel movement.
- Strengthen real-time communication between crane operators, banksmen, and deck crews during dynamic operations.
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Source: IMCA
