Diver sustains laceration to right hand

The incident occurred during air/nitrox diving at 18m depth. A diver was assigned to retrieve tooling from the forward downline, which had over 2m of slack to accommodate vessel movement. The tooling was dispatched via the messenger but exceeded the acceptable depth range within the dive table due to the slack. To rectify this, a decision was made to come up slightly on the downline to bring the tooling within range.

During this adjustment, the diver used his left hand to pull the tooling toward the structure while his right hand was positioned on the wire for additional leverage. However, an unexpected vessel movement caused the breaker/weak link to part, resulting in the diver’s right hand being drawn toward the snatch block, and his glove becoming entrapped and torn off.  

Upon surfacing the diver was immediately taken to the sickbay / hospital for assessment and treatment. He sustained a deep laceration to the base of his right thumb. The wound was stitched, and the diver made a full recovery, retaining full range of motion with no evident ligament involvement or neurological impairment.

Hand Placement of injured person and rigging arrangement

Key factors contributing to this incident likely include the unpredictability of vessel movement, tension within the downline, and the closeness of the diver to high-risk equipment (line of fire) such as the snatch block.

The event underscores the importance of maintaining situational awareness and ensuring stability in marine operations to prevent unintentional force transfers that can result in potential serious injury.