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Welcome Androl. I have never dived Port Phillip Bay, but did some diving last year with a guy that spent many years there and he waxed lyrical about it. Sounds like its a tricky place to dive, so give yourself plenty of dives before you start to measure yourself against the stories of tropical...

Agree its a hoax. To me, perfect trim is being able to hold suitable positions, rather than one position. Sometimes in a wreck that is vertical, getting up or down through a hatch. Sometimes its horizontal. If you have your gear well set up you should be able to adjust your position and hold it...

Greetings and welcome

It seems to indicate it is care in manual handling of cylinders that needs to improve. This is a 'take pressure vessels more seriously' incident, two men killed in a cylinder rupture rather than an O2 explosion. This is a risk that all scuba divers are exposed to, plus anyone using HP gas...

Heat is generated when gas is compressed, that is resolved during the tank fill process. The only source of heat once the tank is full, (in my thinking) are: friction from the gas flow, which increases with gas density and is highest with O2 that any sort of blend with N2 or He; and combustion...

TL;DR - Deco bottles I certainly turn on gently. Partly because that is the teaching, partly because its crude to beat on your gear. I'd love to understand the precise issue/s but its not an orphan idea floating about the industry with no basis in any teaching material. I think cleanliness is...

Anyone using a flammable lubricant in a regulator should rethink their servicing. Tribolube and Cristolube are ideal. The simple observation is you feel the heat in a tank when you're filling it, but have you ever felt a regulator even vaguely warm. If the heat is generated you simply have to be...

I would suggest that Boyle's Law and Charle's Law are pretty clear on this topic, as the pressure drops the volume increases, and therefore the temperature must drop as the air flows through the HP valve. If the idea is that rapidly stopping airflow generates heat, its actually flow that...

Tell your insta-buddy the dive plan, invite comment, then dive and see what happens. If your new buddy can see you are competent, they might go into tag-along mode, or they might demonstrate some competence themselves and contribute to the plan and the leadership of the dive. A dive plan needs...

The difference (for me) between a forum and FB or other such online repository is the ability to seaech the threads. It works best when all the the discussion in the thread is vaguely relevant to the title, or at least the concept. I don't take it personally when I get moderated, I love...

Any turret reg with a 5th port will do you well. I use the same regs for BM and SM, its a few minutes to swap a few hoses to different ports and away I go.

Have you ever had to go through the process of creating and publishing online training materials? The process of creating online content is not like creating a powerpoint presentation, its much more than that. The effort is substantial and the costs are significant. Its probably very similar to...

I did AN/DP with two different computers in gauge mode and using tables. As a technical diver I use a Perdix and a Petrel2, but that is because they support Trimix and CCR. The Peregrine does everything you need for AN/DP and uses ZHL-16C. It's perfect for that level of diving if you have no...

Yongala Dive use a 10m RIB and get 12 divers plus staff on board. Not directly comparable for you as its running twin 200HP outboards, so you'll lose internal space for the inboard to get your lift on the back. Its not running much in the way of seating, tank racks down the middle for two dives...

They are concerned, most certainly. You'll regularly see fisheries inspectors at the Dungeness boat ramp. You also occasionally see them on the water, I've seen them chase a few boats out of the green zones. I've dive a lot outside the green zones and the fish life now compared to a decade ago...

I use a Beuchat Shark mask. Low volume, super flexible frame and buckles so it's safe in a pocket. I had a rigid mask but when I'd get it out, often the buckle had been twisted/shoved half out of its mount so wouldn't sit right or swivel properly. Only issue with the Shark was some fogging...

Its dependant on your boat draw, but we would bottom out on the sand bar when low tide was below 0.5m, which is the new moon period. Much waffle could be heard on that boat waiting for the tide. Its only a few hours per day, maybe 5-8 days per month, but Ramon Jayo is 100% right. We had a few...

You might be in clearer waters there, but also cooler, so I'm not sure its any safer. There was a Qld Parks officer attacked approx 10km from there in April, which would've been an unprovoked attack. Every man and his dog is spear fishing the northern GBR these days, its new craze, to the point...

I think there is a deductive fallacy to view an improving survival rate of infected people as evidence of decreasing the societal risk of the virus. We may very well have over-estimated the risk of the virus, but find me an illness where lethality increased as we learned more about it? Reducing...

I've got two Probe suits, the limbs are very long, their sizing seems, ot atleast was a bit limited. Works fine though. I also have a Neptune, much better range of sizes, also got a pocket glued on. It had a stitching issue pretty quickly, I took it back to the shop and they had it resolved in...