Final answer:
Without the context of regulation 95-1, it's general practice to wear a life preserver during potential risk of drowning activities like boating or water sports, and when advised by safety rules.
Step-by-step explanation:
When referring to regulation 95-1, it isn't possible to provide an exact answer on when to wear a life preserver without the specific context of the regulation. Generally, the use of a life preserver is essential in situations where there is a risk of drowning, such as while boating, during water sports, or when the possibility of unforeseen accidents near or on water arises. Safety protocols often mandate the wearing of life preservers whenever one is aboard a small craft, during inclement weather, or when venturing into open water.
Regarding scuba diving, it's important to be aware of buoyancy, pressure equalization, and the time spent underwater to avoid risks associated with pressurized gases in the body. Furthermore, in scenarios such as being in remote areas or when signs indicate 'no diving', personal safety measures should always be a priority. In other words, life preservers should be worn whenever there's a significant chance of being in the water, especially if rescue could be delayed or if swimming abilities are uncertain.