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I would not purchase the tank. If it's already yours, drain it and either give it to scrap OR condemn & create artwork. A 40yr old Al tank puts it in the era of using 6351 alloy, which was never officially recalled but has the issue of suffering sustained load cracking. Fancy way of saying it...

Why not concentrate efforts on preventing equipment from failing? Prevent wear, routine maintenance, & gear replacement when warranted. The risk VS reward matrix for an SPG you don't fully trust swings into the negative for me. The industry doesn't service SPG's for a reason, we only check...

Would not recommend repairing an SPG just by soaking. This is what's behind the dial. It's a metal bourbon tube that flexes with pressure. The flexing effects the spring coil, which turns your needle. Now let's ask a question: Does corroded metal have more or less flexibility? Less Can...

I personally have seen thick viscous saliva on my mouthpiece after some dives, from myself. If you're buddying breathing at realistic pace, you probably are swapping saliva. You won't be creating enough motion to wash away everything. Just don't put your tongue or mind on it.

Some cars for some reason shield the FOB signal if you place it behind the fuel cover plate. So pop your fuel cover, take the valet key out of the FOB with you, and secure the FOB behind the fuel cover. If you can't find your valet key in your FOB, look in the car manual or search a youtube...

If you want a quick test, try treading water in just swim trunks & fins. Have your whole rig, tanks, and weights on and tread for 10 minutes with no air in the BC. That will be a worst case scenario with 0 buoyancy, say if your weight suit was fully compressed at depth and your wing failed. If...

When your BC's partially inflated, all the air rises to the highest point of the bladder forming an air bubble. Every part of the BC bladder below that air bubble is shrinked wrapped against itself. So when you deflate, any dump valve that's at the lowest point will probably be shrinked wrapped...

I was a few classes ahead of Umi in the dive programs at UC Santa Cruz and mentored him through several classes and as a dive buddy. His dive skill and dive planning mentality was what you would expect from mentors here on scubaboard. Great dive skill with regards to buoyancy and awareness. Dive...

Step 1: Loop your line to a tree or your front door Step 2: Run down the street, doing tie offs on your neighbors mailboxes every 20ft Step 3: Reel back in with tension Step 4: Smile and wave at the neighbors! Seriously though, I went back and forth between my back door and a shrubbery to allow...

A rip current is a force current created by 2 waves. It pulls people out from shore and just past the wave break zone. Just past, the wave break zone. How many beaches have break zones beyond visual range of shore? Swimmers die because they try to fight against the current then drown due to...

A Downcurrent. Yes there's a few videos on youtube. This made the rounds infamously in 2014 on Scubaboard. Good turnout at the end but it'll get your heart throbbing watching it. The procedure is to swim perpendicular away from the wall to get out of the current. The current will hug and swing...

Technically yes, practically not much of an advantage gained. It depends on the site and conditions for the day. At my old local site Breakwater - Monterey, California, I took advantage of one once, but it was spontaneous and right place right time. We don't really go searching for a free ride...

That's an impressive 4000 lumen dive light. What LED light were you comparing that to?

Evaluating new types of tourniquets by the Israeli Naval special warfare unit The IDF uses Spanish Windlass/IRT improvised tourniquets for thigh injuries and your silicone one for only upper limb injuries. You can't self apply a silicone tourniquet or an IRT without 2 hands. You also need a...

No one has mentioned a no-cutting removal technique for Bp/W single-piece harnesses, so I will. At the surface after getting victim buoyant, face up, & waist unbuckled 1) Lift both victim's arms so they lay pointed straight "above" their head 2) Now position yourself to the side of the victim...

Agreed, dated within 1 year.

60+ feet is when Nitrogen Narcosis can start to set in. Symptoms of it can include anxiety and paranoia. It is something you can develop better tolerances to with more experience under the effeccts. As you go deeper you increase your threshold to absorb more Nitrogen into your body. That's why...

Dedicate an excel sheet and log hours like you would engine hours for a boat or plane. OR Service them biannually accordingly to your estimate and the regulator manual. Send them in May-June & December-January every year. Out of curiosity, what are you doing that would make you think of that...

One of the biggest "aha" moments of diver intuitiveness is learning how to fin effectively for your fin. If you kick the exact same frequency with any fin you wear, you're going to be very opinionated on which fins "suck" and which do well. Tiny rinky-dink swimming fins are light and either A)...

There are 3 main models of compass's that all rebrand in the industry. Suunto is one. Supertilts like Sherwood, Aqualung, DGX deluxe model, and generic like Saekodive, Trident, XS Scuba. Suunto's are the gray bezel. Supertilts have the flat bezel and stereotypically pure white glow cards...