Container lashing, is the process of securing containers together on board ships and container un-lashing/delashing is un-securing the containers when the transport is complete. This is known as one of the most risky activities in the marine cargo handling sector. A container is secured to a ship by means of lashing rods, turnbuckles, twist-locks, etc. This process prevents the containers from moving from their place, or falling overboard during rough seas or heavy winds.

Container lashing has been the cause of many seafarer close calls, injuries and even fatalities. This document explores the many safety considerations associated with container lashing and un-lashing activities, and offers guidance on creating a safer work environment.