Open porthole

  • Safety Flash
  • Published on 1 March 2004
  • Generated on 25 August 2026
  • IMCA SF 02/04
  • 2 minute read

A Member has reported the following incident which occurred onboard one of its vessels. 

What happened?

The vessel was sailing in 6 - 8ft swell and 35kts wind speed, when it was noticed that one of the accommodation cabins was flooding with water. Upon opening the cabin door, it was noticed that water was entering the cabin from an open porthole.

The duty seaman immediately switched off the power supply to the accommodation cabins in order to prevent any short circuiting of the electrical system and possible fire. He also closed the porthole immediately.

The company’s basic sailing procedures require that ‘all portholes be securely closed when sailing’ irrespective of the weather conditions. This procedure was not followed.

The company has issued a reminder as follows:

Responsibility and Authority of The Vessel Master – A Reminder

The vessel master has the ultimate responsibility to ensure the safety of the vessel.

  • He is responsible for ensuring through HSE meetings, training, familiarisation etc., that all personnel (including passengers) onboard the vessel, understand the safety procedures & instructions as per SOLAS and other relevant requirements, to be followed on the vessel, and to ensure that they strictly follow all such safety instructions.
  • He has the authority to carry out regular checks/inspections to ensure that all necessary safety instructions & procedures are being followed.
  • He also has the authority to take disciplinary action as necessary, against those personnel onboard the vessel who do not follow necessary safety instructions & procedures, and put the vessel at risk.

Latest Safety Flashes:

GPS jamming and spoofing – good practice example

A Member’s vessel in the Red Sea encountered GPS jamming.

Read more
LTI – Shoulder strain when crew member was descending the stairs

A crew member sustained an injury to their shoulder as they were descending a flight of stairs into an ROV hangar.

Read more
Emergency escape hatch found blocked

Emergency escape hatch to the deck could not be opened.

Read more
Crew member sustained hand injury during lifting operations

A crew member sustained a hand injury during a lifting operation involving a main engine cylinder head.

Read more
NOPSEMA: Lifting operations dangerous occurrences and injuries

NOPSEMA has published a safety bulletin relating to lifting operations in the offshore industry.

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.