This audio brief, based on AMSA’s recent webinar on hazardous gases, explores the risks posed by three gases commonly found on domestic commercial vessels:

• carbon monoxide 
• hydrogen sulphide
• carbon dioxide. 

It outlines how these gases are generated, the symptoms and health impacts of exposure, where they may accumulate on board, and the controls operators should implement as part of their Safety Management System.

The brief also summarises key regulatory requirements under Marine Order 504 and highlights practical steps for conducting risk assessments, training crew, developing emergency procedures, and preparing for AMSA’s upcoming focused inspection campaign.