6-24 U.S. Navy Diving Manual — Volume 2 Failures in acquiring good SA undermine the quality of decisions and performance. Complacency stems from a lack of SA. Situational awareness progresses through three levels: n Basic. An awareness of key elements of the situation (e.g., depth of the divers, bottom time, stage of the dive, weather, repet group of available divers). n Intermediate. A compreh ension and integration of the elements in light of current goals (e.g, understanding that divers are having difficulty completing their task, and that there are insufficient clean divers available to continue diving). n Advanced. The ability to use the current information to predict what will happen in the future (e.g., the schedule will slip, and upcoming spring tides will produce greater currents that will increase risk to divers). 6-6.3.1.1. One misconception about SA is the Dive Supervisor needs to know everything that is going on. However, overloading the Dive Supervisor can contribute to loss of SA. For this reason divers shall be thoroughly trained in all aspects of diving to aid understanding and comprehension of complex factors to avoid giving irrelevant or untimely information to the dive supervisor, especially in an emergency. Maintaining good SA: n Monitor progression of the dive. n Make extra efforts to get relevant information during decent, ascent, and abnormal situations. n After an interruption or distraction, back up several steps, or double check all steps if possible. n Be aware of environmental and cumulative ef fects on the divers and the team. n Stand back and look at the problem and double check assumptions with the rest of the team. n Stay focused on the goal but avoid tunnel vision. n Verbalize decisions to the team. 6-6.3.2 Decision Making. The most appropriate decision making strategy for a given situation is determined by the amount of time available, the level of risk involved, and the expertise of the decision maker. To optimize decision making during operations: n Voice concerns early.

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