The P&I Club has warned its members about the dangers of working on board ships, following recent deaths.
The club warned: "The importance of proper safety measures and procedures being observed at all times when working aloft, alone or near the ship's rail, cannot be emphasised strongly enough.
"Crew members should always inform a responsible person when and where they are working, and what they are doing. And they should at all times wear a suitable safety harness and lifeline."