The Editor says: Although scuba diving is a remarkably safe activity, unfortunate incidents do occur every diving season. Accidents may seem to strike suddenly, but they are always preventable. The most important thing is having the right mindset — when solid safety concepts are deeply ingrained, you'll be able to handle unexpected situations with ease. Master these 12 diving safety guidelines, and we're confident you'll have fun and dive safely for years to come. This article is reprinted in full from Green Island Bay Dive Center.
12 Essential Scuba Diving Safety Concepts
-
Don't treat your dive guide as a babysitter: In many places around the world, a dive guide's job is simply to lead you to points of interest, explain the terrain, and manage the current. If you don't pay attention during the briefing and go in confused, don't expect anyone to look after you!
-
The buddy system: It doesn't matter whether you're travelling solo or joining a group on the boat — once you're aboard, if the dive operator or dive guide hasn't actively assigned you a dive buddy, speak up immediately or find one yourself. Never let pride stop you from saying something. Thinking "I'll just stay close to everyone" is not enough. If buddy groups are properly organised, nobody boards without being paired up, and if someone goes missing, everyone will know. Beyond that, stick to your buddy at all times — ideally close enough to reach out and grab them.
-
Why everyone must surface together on a boat dive: Some divers feel smug about having plenty of air left and linger below while everyone else has already surfaced. At that point, the boat will motor over to pick up the main group. Underwater, there are blind spots everywhere — if you suddenly ascend just as the boat moves overhead, you could end up directly in the path of the propeller. Think about what happens then.
-
Stay well clear of the propeller on boat dives: If a boat's design requires divers to enter or exit near the stern by the propeller, the dive operator must have a dive guide stationed there to supervise. That said, very few boats are designed this way — and it's best to avoid booking trips on boats that are.
-
Never swim under the hull: If the ladder is on the port side and you surface on the starboard side, many divers assume cutting under the hull is faster. It isn't — and it's dangerous. The correct approach is to swim around the outside of the boat, keeping your eyes on the hull the entire time, especially near the engine, because you never know when it might start up without warning.
-
Confirm the entry method before a boat dive: When rolling off an inflatable RIB, the instructor or dive guide will count 1-2-3. Clarify beforehand whether you back-roll on "3" or on the word "jump" after the count. A timing difference of just 0.3 seconds means a scuba tank smashing into the head of the person who went in first — that is no joke. If you miss the signal for your back-roll, don't go — wait for everyone to clear the sides, confirm there is nobody in the water below you, and then roll in. Also confirm the regrouping procedure: in areas with strong currents, the group may agree to assemble underwater immediately after entry. If you wait on the surface expecting everyone to come to you, the current may carry you away before you know it.
-
Deploying a surface marker buoy (SMB) is an art: For a group descending and ascending together, one person can deploy the surface marker buoy (SMB) for the whole group — up to five people can share one SMB; more than five and it's safer to deploy two. Everyone should stay close and ascend together. Individuals or small sub-groups separated from the main party should also deploy a surface marker buoy (SMB) so that vessels on the surface can see them. The reason we say "should" rather than "must" is that in strong currents below, attempting to deploy a surface marker buoy (SMB) when you're not proficient can put you in a different kind of danger.
-
The safety stop is not always mandatory: A 3-minute safety stop at 5 m is not a required decompression stop — it simply helps your body off-gas nitrogen more efficiently. If you encounter a strong current or run low on air, you may ascend directly, provided your dive computer has not entered mandatory decompression (Deco) mode.
-
Boarding the boat after a dive is a critical moment: Before you grab the ladder, make absolutely sure the person ahead of you has fully cleared it and is safely on deck. Never wait directly beneath someone on the ladder — if they slip, you'll have a scuba tank coming straight down on your head, and that will not end well.
-
A dive computer should be the first piece of gear you buy: Stop relying on your instructor or dive guide and thinking "as long as I stay shallower than them, I'll be fine." Your life is your own responsibility. Once you have a dive computer, don't just wear it for show — actually learn how to use it. It's also a good idea to familiarise yourself with what the display looks like when you enter decompression, so you're not caught off guard if it ever happens.
-
Instructors are not all-powerful: An instructor is just one person with two hands and two eyes — there is only so much they can watch over. Stop expecting to offload responsibility onto your instructor. Training yourself to be a capable, self-sufficient diver is the single best safety strategy.
-
Insurance. Insurance. Insurance: Always take out insurance before you dive, regardless of whether the trip is organised by an instructor or not. Only you can be responsible for your own life — never skimp on insurance. Standard travel insurance combined with certain adventure activity add-ons covers most risks. If you're travelling overseas to a remote destination, international dive insurance is also well worth considering.
Let us say it one more time: your life is your own. In a genuine underwater emergency, only you can truly help yourself. Please build a solid foundation of safety knowledge before you enter the water — for your own sake and for the sake of those around you.
If you agree with these points, share this article with more friends and let's all dive safer as we explore inner space together!
Cover photo: Photo by Sebastian Pena Lambarri on Unsplash
Related links:
