The Department of Transport, Tourism and Sport has moved to highlight a recent report published by the Marine Casualty Investigation Board of the fatal incident on board “FV Oileán an Óir” as reported on Afloat.ie

The fatalities occurred due to the inhalation of lethal levels of hydrogen sulphide (H2S) accompanied by elevated levels of ammonia (NH3) that were present in the atmosphere in refrigerated seawater.

Entry into any enclosed or unventilated space should only take place after the space has been tested and proven to be free from toxic or suffocating gases. Measurement of Oxygen content alone should not be taken to indicate that the atmosphere is safe.

Owners and Skippers of vessels fitted with Refrigerated Sea Water Systems should ensure that notices are displayed onboard highlighting the dangers.