Buddy checks and BWRAF explained
Most dive problems are caught before you ever hit the water — by a two-minute buddy check. Here's what BWRAF means, how to run it, and why it's the cheapest safety habit in diving.
Some of the most reassuring safety facts in diving are also the most boring-sounding: a large share of preventable problems are caught not underwater, but on the boat or shore, in the two minutes before you descend. The tool for that is the pre-dive buddy check, often remembered by the mnemonic BWRAF. It costs nothing, takes a couple of minutes, and quietly stops small oversights from becoming underwater problems. This is a plain explainer: what the buddy check is, what BWRAF stands for, and how to make it a habit. It is general education, not a substitute for your training.
What the pre-dive buddy check is
A buddy check is a short, structured routine you and your dive partner run through together, just before getting in the water. You each check your own gear and then check each other's — out loud, hands-on, not just a glance. The point is redundancy: two sets of eyes catch what one tired or excited diver might miss, like an unopened air valve, a loose weight pocket, or an inflator that isn't connected. It's the same logic as a pilot's pre-flight checklist.
New divers sometimes feel awkward checking an experienced buddy, or rush it because they're keen to get in. Resist that. The check is a courtesy you do for each other every single time, regardless of experience — the most experienced divers are usually the most diligent about it.
What BWRAF stands for
BWRAF is the most widely taught mnemonic for the buddy check. The exact words vary a little between agencies and there are many cheerful memory phrases for it, but the five steps are consistent:
- B — BCD / Buoyancy: check the BCD inflates and deflates, the inflator hose is connected, and all dump valves work.
- W — Weights: confirm the weight system is in place, secure, and — crucially — that you both know how to release it quickly in an emergency.
- R — Releases: check all the buckles, clips and straps holding your gear together, and make sure you each know how your buddy's releases work.
- A — Air: turn the air fully on, check the tank pressure, and breathe from both the primary and alternate regulator while watching the gauge for a steady reading.
- F — Final OK / Final check: a last look over everything — mask, fins, gauges, any cameras or accessories — and a confirming OK between buddies before you go.
Different agencies and instructors use different memory phrases to recall B-W-R-A-F, and some add their own touches. The exact wording matters less than actually doing all five, out loud, every dive.
The single most common catch: air
If there's one item that justifies the whole ritual, it's the 'A'. Diving with an air valve that's only partly open — or, rarely, not opened at all after a gear move — is a classic, entirely avoidable problem. Always turn the air fully on, then watch the pressure gauge while you breathe deeply from your regulator: if the needle dips and recovers, the valve isn't fully open. Two breaths and a glance at the gauge prevent it every time.
Why this two-minute habit prevents accidents
The buddy check works because most diving incidents don't start with something dramatic — they start with a small, unnoticed setup error that only becomes a problem once you're underwater and task-loaded. Catching those on the surface, where fixing them is trivial, is the whole game:
- It catches gear errors while you're still standing safely on the boat or shore.
- It makes sure you each know how the other's kit works — vital if you ever need to help your buddy.
- It confirms your air is on and flowing before the one moment you can't easily fix it.
- It builds familiarity and calm between buddies, so a real problem underwater is handled, not panicked.
- It creates a shared pause to confirm the plan, signals, and 'what if' before you descend.
None of this demands skill or athleticism. It's a habit, and like all good habits it works precisely because you do it every time — including the dives where nothing was ever going to go wrong.
Why good habits are the cheapest safety you'll ever buy
A buddy check costs nothing but two minutes, yet it does more for your safety than almost any piece of gear you could buy. We spend a lot of time on this site adding up the real costs of diving — training, computers, insurance — but the buddy check is a reminder that the most valuable safety practices are often free. The discipline to run it every time is worth more than its price tag suggests, which is zero.
Knowing how to help a buddy when something goes wrong is the natural next step beyond the pre-dive check — see what a Rescue Diver course costs and what it teaches.
The honest takeaway
The pre-dive buddy check is the highest-value, lowest-effort safety habit in diving: two minutes, no cost, and it catches a surprising share of the problems that would otherwise follow you underwater. Run through BWRAF — BCD, Weights, Releases, Air, Final OK — out loud and hands-on, with every buddy on every dive, no matter how experienced you both are. Do it every time, and most small mistakes get caught exactly where they're easiest to fix: on the surface, before you ever descend.