Vessel near miss with wellhead

  • Safety Flash
  • Published on 19 January 2021
  • Generated on 2 April 2026
  • IMCA SF 03/21
  • 2 minute read

Near miss: A vessel came within 10 metres of a wellhead while the Master was preoccupied with change-over and did not expect to drift so close to the wellhead

What happened?

A vessel had a near miss with a wellhead within the 500m zone. The vessel Master was preoccupied and did not notice that the vessel was drifting close to the wellhead. The vessel missed the wellhead by less than 10 metres.

What was the cause?

Subject to further investigation:

  • There was only one watchkeeper – the Master – on the bridge at the time. Company procedures for having two watchkeepers on the bridge at all times, were not followed.

  • The client’s voyage procedures were not followed.

  • The Master was preoccupied with change-over procedure which took attention away from the vessel’s movement.

  • The Master assumed that the vessel was going more slowly than it actually was, and had no expectation that the vessel would drift so close to the wellhead.
A vessel had a near miss with a wellhead within the 500m zone.

Actions

Vessel Masters have overall authority for the health and safety of all personnel onboard the vessel, the safety of the vessel itself and it’s immediate environment.

  • Ensure that watchkeeping procedures for bridge operations are strictly followed.

  • Ensure that client voyage procedures are strictly followed.

  • Ensure that there are sufficient trained, competent and rested people  available at all times for watchkeeping.

  • Follow COLREGs at all times.

  • If a watch officer needs to leave post, ensure a suitable replacement is found before doing so.

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.