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It doesn't mention bends until the third paragraph, and not at all in the headline.

Yes, but I see no reason for a civilian vessel to do that.

Rust is oxidation, and I was taught, by very knowledgeable people, that rust never sleeps.

It corrodes, rust is a specialized term used to denote corrosion of iron.

Makes you wonder what the previous owner was doing with the tank.

It is not that odd around industrial cylinders.

No DOT scuba tanks over 3500 psi, and new ones are not being made now. DIN are 300 bar regs, but there are no 300 bar yokes available. I do have an old '80's Sherwood yoke reg that is made for 4000# service. I have no problem finding shops that can fill to 3500# now, of course if a shop never...

I'd find another shop regardless.

There is something to be said for tradition, I'll look through Churchill's quotes and get back to you.

Syntactic Foam Subsea Buoyancy Modules - Doowin Marine

Sounds like the latch does not penatrate the hull if they have to release it, and the crew outside cannot.

Not me, I was trained by old timers, and ran into enough lessons along the way. I may not carry all my weight on the belt, but I always wear a belt.

Dead people and those in full panic are highly unlikely to drop their weights or inflate their BC.

Tell them the mix, and to hold the helium.

That's why I just bought another plate, I hate the single tank adaptor as it moves the tank away from my back, and plates are pretty cheap in the grand scheme of things.

The quote was "Swell of up to 7m", which is different than a 7m swell. They were certainly diving in marginal conditions, but not necessarily as bad as it sounded.

I know, but I have to uphold the reputation of us amateurs. :wink:

Probably found a path through the building to get to a good ground on the compressor, then the main strike followed. I've been in a building when it was hit, and later found the path it used by following the damage from where I saw it come through the ceiling.

@Tracy pointed out the big money, or rather, avoiding that big money. There is value in the engine and other parts as it is in fresh water and will not cause the damage a long soak in salt water will do. It's not the amateur part that that is the issue, as I have retrieved a number of large...

The ones others have quoted are for the old steel 72's, designed before the Al 80 was invented. PST and Faber also made Mid Pressure 3300 psi (including the 10%) that hold 72 cuft at that pressure. I believe Faber still makes theirs, and are smaller than the old steel 72's and are nice little...