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IMCA safety flashes disseminate important information on incidents and potential hazards and the lessons learnt from them that can help prevent incidents occurring elsewhere in the industry.

Individual safety events are available individually online, tagged and searchable, while the traditional PDF collections are also available for download.

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Nicholas Hough
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Bailout manifold failure

What happened A diving bell bailout manifold failed under pressure. No divers were in the bell at the time. The bell was being prepared for diving operations whilst the DSV […]

| Included in IMCA Safety Flash 02/22

LTI: person fell down hatch inside crane pedestal

What happened Two service engineers where performing an inspection inside a offshore crane pedestal.  Inside, there was a ladder running the full height of the crane pedestal, with a hatch […]

| Included in IMCA Safety Flash 01/22


Fire door left wedged open

What happened During a routine visit to a vessel in port, it was noticed that the Class A fire door for the laundry was intentionally wedged open with a wooden […]

| Included in IMCA Safety Flash 01/22

Lifejacket battery caught fire

During an inspection on a vessel in cold lay-up, the lifejackets stored underneath a sitting bench in the wheelhouse were found burned and melted. No-one was harmed; apart from the […]

| Included in IMCA Safety Flash 01/22


Safety Flashes – a review of 2021

This is a summary of the thirty-four IMCA Safety Flashes published during 2021. All the published safety events or incidents are available on the IMCA website as individual web pages […]

| Included in IMCA Safety Flash 35/21

MSF: Crankcase failure

What happened The Marine Safety Forum has published Safety Alert 21-19 relating to a crankcase failure. A vessel suffered a crankcase failure on one of four diesel generators, which resulted […]

| Included in IMCA Safety Flash 34/21

Oil leakage from cylinder head cover

What happened After completion of regular planned maintenance on one of the main engines, the cylinder covers were mounted back. However, the cover of cylinder number one was not mounted […]

| Included in IMCA Safety Flash 34/21

Importance of safety by design: acoustic beacon damage in splash zone

What happened During recovery of tugger winches on an A-frame workstation, the headache ball experienced normal movement when exiting the splash zone.  However, in this instance, the headache ball came […]

| Included in IMCA Safety Flash 34/21

ROV main lift failure

A termination failed during launch of an ROV for a test dive, and the ROV/TMS assembly fell to the seabed.  No-one was harmed.  The umbilical termination slipped through the wirelock […]

| Included in IMCA Safety Flash 34/21


Crew member stopped unsafe cargo operations

What happened During third-party cargo operations from the dock to the vessel it was noticed that the lift was being conducted using a wire set with no colour code and […]

| Included in IMCA Safety Flash 33/21

UHMPE pull-in rope damaged during mooring connection to buoy

What happened A synthetic pull-in rope used in a subsea mooring operation was violently pulled out of the control of an ROV.  The ROV was pulling the thimble side of […]

| Included in IMCA Safety Flash 33/21



Cyber-security – malicious spoofing and phishing

The United States Coast Guard (USCG) has released very timely Marine Safety Information Bulletin (MSIB) 19-20 relating to malicious email spoofing incidents. The USCG notes that there are increasingly sophisticated […]

| Included in IMCA Safety Flash 33/21

Vessel ran aground causing major hull damage

What happened A vessel left port and started a transit.  During the first part of the voyage, the vessel was overtaking another vessel and the decision was made to pass […]

| Included in IMCA Safety Flash 32/21


H2S detected in a bilge tank

During routine transfer of bilge water from engine room bilge wells to the bilge water tank, the crew noticed the smell of “rotten eggs” from the bilge tank vent.  Immediately […]

| Included in IMCA Safety Flash 32/21

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