Skip to content

Dropped object near-miss: ROV wire rope

Crew were aligning an ROV to the guide wires on the starboard aft ROV deck of a vessel. While doing this the ROV dome contacted the forward guide wire and it broke free from its termination point on the overhead gantry. This allowed approximately 36m of “2 inch” 6×19 wire rope, weighing 430kg, to fall to the pontoon level and into the water below. The closest worker was approximately 6m away on the ROV deck level and was approximately 9m beneath the gantry tending a tag line while the ROV was being positioned during the incident. The potential severity of this near miss was a fatality.

What went wrong:

  • An investigation found that the lack of formalised procedures, reliance on second hand knowledge and the lack of verification on preventative maintenance schemes resulted in the deterioration of equipment, leading to failure.

The corrective actions and recommendations were:

  • Use certified guideline wires;
  • Install secondary retention on all cursor guideline wires;
  • Create specific maintenance procedures for the use and care of cursor guidelines.

Safety Event

Published: 2 October 2015
Download: IMCA SF 14/15

IMCA Safety Flashes
Submit a Report

IMCA Safety Flashes summarise key safety matters and incidents, allowing lessons to be more easily learnt for the benefit of all. The effectiveness of the IMCA Safety Flash system depends on Members sharing information and so avoiding repeat incidents. Please consider adding [email protected] to your internal distribution list for safety alerts or manually submitting information on incidents you consider may be relevant. All information is anonymised or sanitised, as appropriate.

IMCA’s store terms and conditions ( apply to all downloads from IMCA’s website, including this document.

IMCA makes every effort to ensure the accuracy and reliability of the data contained in the documents it publishes, but IMCA shall 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.