Editor-in-Chief Mark Evans and Safe Diving’s Mark Newman take a look at some must-have safety gear when liveaboard diving – namely, DSMBs, and GPS beacons.

Delayed surface marker buoys are a cheap and effective tool to have in the diver’s arsenal for highlighting your location in the water to your dive boat crew, and the two Marks take a look at some of the different versions available.

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Mark Evans
Scuba Diver's Editor-in-Chief Mark Evans has been in the diving industry for nearly 25 years, and has been diving since he was just 12 years old. 30-odd years later and he is still addicted to the underwater world.

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