Sprained ankle whilst climbing on equipment

  • Safety Flash
  • Published on 5 July 2019
  • Generated on 23 June 2025
  • IMCA SF 16/19
  • 2 minute read

A crewman slipped and sprained his ankle climbing off equipment on which he had been working

What happened?

The incident occurred inside a transition piece (the lower part of an offshore wind turbine tower). 

A crewman was climbing down off a cable rack (on which he had climbed to loosen cable cleats and apply a heat blanket) when he slipped off and twisted his ankle, loosing balance and falling onto the floor.

He managed to walk back to the vessel over the walk-to-work (W2W) gangway on his own, and suffered no fractures; however, he sprained his ankle, restricting him from normal duties for three days.

A crewman slipped and sprained his ankle climbing off equipment on which he had been working

What were the causes?

  • The cable rack was not designed to be climbed on; the spacing between rungs varies and does not follow the standard for fixed ladders.

  • Access to the work location on top of the cable rack was not addressed in the risk assessment and the related procedure.

  • Inadequate mitigations implemented; the narrow workspace in the transition piece does not allow the use of stepladders and work platforms.

What lessons were learned?

  • Identify hazards at design stage to ensure that safe access can be achieved.

  • Before starting work, safe access to any site should be established. If this can’t be achieved, then STOP the job and report the issue to your Supervisor.

  • Ladders and platforms – safe and appropriate to the conditions should be used and working at height processes should be followed.

Latest Safety Flashes:

NTSB: Vessel crane contact with shore-side crane

The National Transportation Safety Board of the United States (NTSB) has published a report and an investigation.

Read more
Dropped pallet during forklift operation

A pallet containing a load weighing 500kg dropped off a flatbed truck in close proximity to a delivery driver.

Read more
Dropped object hazard: access hatch to the communication dome

During a routine scheduled safety inspection of the main mast, it was discovered that the access hatch to one of the communication domes had fallen off.

Read more
Lock out/Tag out and unauthorised electrical connections/disconnections
Read more
MAIB: Is your Lead-Acid battery safe?

The UK Marine Accident Investigation Branch has published Safety Digest 1/2025, consisting of lessons from recent Marine Accident Reports.

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.