SAFETY continued
divers are calm, pa- tient, and observant. They notice if you seem off and check in without being in- trusive. They are will- ing to stick with the plan and are not prone to “just a little deeper” or “let’s push the limit this once.” They are proficient but not overtasked; a heavily task-loaded videographer or an in- structor juggling mul- tiple students may not
checks, not “whenever I remember.” And think carefully about high-responsibility roles: leading large groups or man- aging students can be very demanding. If you notice it’s be- coming harder to track everyone and everything at once, it may be time to adjust your role. Older divers benefit from rigorous, repeatable pre-dive routines. A printed or laminated pre-dive checklist that you follow every time, even on “simple” shore dives, can be in- valuable. Include self-check and buddy check components: is your breathing gas on and the cylinder valve fully opened, are valves verified, is the inflator functioning and are dump valves clear, is your dive computer set and functioning, and are weights secure and appropriate? Review the dive plan clearly and concisely: maximum depth, turn breathing gas pressure, time limits, lost-buddy procedure, ascent profile, and safety stop. Repetition builds habit, and habit reduces reliance on working memory. Communication is another area where small changes can pay large safety dividends. Subtle cognitive changes can make ambiguous messages more problematic, so simple, unambiguous hand signals are best. Review signals before the dive and agree on straightforward “if-then” actions: if you signal low on breathing gas, we immediately ascend to- gether; if we lose each other, we search for up to one minute and then surface safely. Complex signals or plans that require remembering multiple conditionals can set divers up for confusion when stress levels rise. Buddy choice matters more than ever, not as a crutch, but as part of a shared safety system. Good buddies for older
be ideal. It can help to be frank in advance: “I’m still very comfortable diving, but I’m at a stage where I really value clear plans and conservative profiles. I prefer to avoid last- minute changes or pushing limits.” That’s not weakness. It’s professionalism. The dive operation you choose can support or undermine these efforts. Look for operators who respect individual limits and do not pressure divers into dives beyond their comfort or training. Clear, structured briefings that repeat key points make it less likely that anything critical will be missed. Let the crew know if you prefer to go slowly on descents and ascents, stay shallower, or remain close to the guide. You are not asking for special treatment; you are aligning the dive with reality. The brain, like the body, responds to training and support. You can promote cognitive health in ways that directly benefit your diving. On land, physical fitness matters. Regular aerobic exercise, strength training, and flexibility work improve cerebral blood flow, balance, and reaction time. Sleep deserves attention; consistent, high-quality sleep, especially before diving days, is one of the simplest ways to support cognition. Mental activities such as puzzles, reading, strategy games, or learning new skills can help maintain cognitive flexibility. But we shouldn’t overestimate “brain games” at the expense of whole-body activity and social en- gagement, which appear to matter more. Regular medical care is essential: manage blood pressure, cholesterol, and blood sugar; screen for sleep apnea, hearing loss, and depression, all of which can affect cognition.
SCUBA DIVING INDUSTRY | 10
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