What should the Dive Supervisor do if weather changes rapidly during a dive plan?

• A. Proceed without changes
• B. Reassess risk, adjust plan, and possibly abort and ascend.
• C. Speed up the dive
• D. Ignore weather and continue

Answer: (B)

When weather shifts suddenly, the priority is to manage risk through a fresh assessment and an adaptive plan. The Dive Supervisor should pause and re-evaluate how the new conditions affect surface safety, currents, visibility, swell, and the overall risk to gas management, decompression obligations, and entry/exit procedures. Based on that updated assessment, the plan should be adjusted to stay within safe margins—this could mean shortening bottom times, altering the dive site or route, changing entry and exit methods, or switching to a shallower or shorter dive. If the conditions cannot be mitigated safely, aborting the dive and ascending becomes the responsible choice to protect everyone.

This approach keeps divers informed, maintains clear communication with the crew and divers, and aligns actions with current hazards rather than sticking to the original plan. Proceeding as if nothing has changed, speeding up the dive, or ignoring the weather introduces unacceptable risk and is not in line with safe supervisory practice.