United States Coast Guard Assistant Commandant for Prevention Policy Marine Safety Advisory 01-12 June 21, 2012 Washington, DC; Recommendations for Recreational Diving Operations Occurring from Commercial Passenger Vessels. This advisory is addressed to Passenger Vessel Operators, Owners and Crewmembers providing commercial transport and support services to recreational divers, and reminds them of safety responsibilities to themselves and their passengers. Additionally, this advisory is intended to provide recommendations and lessons learned from recreational diving casualty investigations, and promote awareness of industry best practices.