Serious hand injury during mooring operations

  • Safety Flash
  • Published on 3 October 2023
  • Generated on 4 April 2026
  • IMCA SF 23/23
  • 2 minute read

A dock worker suffered a serious hand injury during mooring operations. 

What happened?

The incident occurred as the vessel was prepared for departure from the berth.

The mooring foreman signalled the team to let go, keeping one line on the bollard. The injured person grabbed the rope at the end of the eye near the area of the splice and began to remove it from the bollard.

Halfway through removing it from the bollard, the rope suddenly tightened, causing the eye of the rope to catch onto the side of the bollard while his right hand got stuck in between two ropes.

The injured person was able to pull out his hand from the trapped gloves and shout for help, before receiving first aid.

The injured person grabbed the rope at the end of the eye near the  area of the splice and began to remove it from the bollard. Halfway through removing it from the bollard, the rope  suddenly tightened, causing the eye of the rope to catch onto the side of the bollard while his right hand got stuck  in between two ropes.

Position of injured person (IP)

Insufficient slack was provided in the rope when the dock worker attempted to grab the spring line from the  bollard. As the ship’s crew attempted to slack the spring line, tension mounted and caused the rope to tighten  on the vessel’s winch

Signalling to vessel crew to slack while approaching the line

The injured person grabbed the rope at the end of the eye near the  area of the splice and began to remove it from the bollard. Halfway through removing it from the bollard, the rope  suddenly tightened, causing the eye of the rope to catch onto the side of the bollard while his right hand got stuck  in between two ropes.

Grabbing the rope at the end of the eye

 There was a lack of planning, a lack of risk assessment, a lack of forethought: the injured party put their hand  in the line of fire

Hand caught between the two ropes

What went wrong?

  • There was a lack of planning, a lack of risk assessment, a lack of forethought: the injured party put their hand in the line of fire.

  • Insufficient slack was provided in the rope when the dock worker attempted to grab the spring line from the bollard. As the ship’s crew attempted to slack the spring line, tension mounted and caused the rope to tighten on the vessel’s winch.

  • The absence of a messenger or tail line attached to the ship’s mooring lines.

Lessons learned

  • Stop and think before acting – take the time to think things through.

  • Keep your hands and fingers out of the line of fire.

  • Be ready to stop the job if someone else is looking as though they are putting themselves or others at risk.

Latest Safety Flashes:

MAIB: Sinking of tug Biter with loss of two lives

MAIB has published Accident Investigation 17/2024 relating to the girting and capsize of tug Biter with the loss of two lives.

Read more
Dropped object – strop parted over sharp edge

A cylinder was lifted to a height of approximately 6 metres over deck of the vessel, the sharp steel edges of the cylinder cut through the firehose protection and caused the strop to part.

Read more
Person injured when pry bar slipped

A crew member who was applying downward pressure to their pry bar to lift a track, fell towards the deck when the pry bar slipped.

Read more
MSF: High potential near miss during FRC maintenance

The Marine Safety Forum has published Safety Alert 26-01 relating to an incident where there was an unplanned lowering of an FRC to the sea

Read more
BSEE: Crane incident leads to serious facial injuries

BSEE has published Safety Alert 512 relating to a crane incident during well abandonment which led to a worker being struck and suffering serious facial injuries.

Read more

IMCA Safety Flashes summarise key safety matters and incidents, allowing lessons to be more easily learnt for the benefit of the entire offshore industry.

The effectiveness of the IMCA Safety Flash system depends on the industry sharing information and so avoiding repeat incidents. Incidents are classified according to IOGP's Life Saving Rules.

All information is anonymised or sanitised, as appropriate, and warnings for graphic content included where possible.

IMCA makes every effort to ensure both the accuracy and reliability of the information shared, but is not be liable for any guidance and/or recommendation and/or statement herein contained.

The information contained in this document does not fulfil or replace any individual's or Member's legal, regulatory or other duties or obligations in respect of their operations. Individuals and Members remain solely responsible for the safe, lawful and proper conduct of their operations.

Share your safety incidents with IMCA online. Sign-up to receive Safety Flashes straight to your email.