Homemade tools don’t belong onboard says Marine Safety Forum in its lastest Safety Flash concerning an incident that could have resulted in serious injury.
A supply vessel was instructed to return to port due to poor weather conditions at the field. The Captain instructed the deck crew to ensure the containers on deck were adequately secured using chain lashings. The chain lashings were put in place and the decision taken by the deck crew to use the tugger winch to tighten the lashings. When the tugger was tensioned up the chain lashing parted and a piece of flying debris struck and broke the bridge centre aft window.
The investigation found that a home chain connection (a piece of chain welded to a stainless steel shackle) had at some stage been introduced into the cargo lashing system. This was probably done so the tugger wire hook could be quickly connected.