What should be included in the pre-dive briefing delivered by the Dive Supervisor?

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A pre-dive briefing is an operational safety briefing that sets the plan, expectations, and risk controls for the dive. It should cover the scope and objectives so everyone understands why the dive is being done, as well as dive site details, including location, entry and exit points, and any site-specific hazards. Clear depth limits and bottom time establish the parameters for the dive, and roles and responsibilities ensure each person knows who is in charge and who handles monitoring, gas, and safety tasks. The gas plan and air supply information—including gas mixes, available reserves, and contingency gas—is critical to prevent running out of breathing gas. Communication methods and agreed signals keep the team coordinated underwater and on the surface, while entry/exit procedures and emergency plans outline how to begin, end, and abort dives, as well as rescue and evacuation steps. Fitness to dive considerations ensure all participants meet health and operational requirements.

Context helps here: weather or site conditions may influence planning, but they don’t replace the need for a full briefing that covers all safety and operational elements. Personal preferences like equipment color don’t impact safety, and the client’s business goals aren’t part of the dive safety briefing.