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37 votes
Accepted

Will a compass work underground or underwater?

Compasses are good equipment both spelunking and diving. Even the deepest cave you could go to is still near the earth's surface, geologically speaking. The earth's magnetic field is also essentially ...
Karen's user avatar
  • 4,244
12 votes
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Special equipment for Nitrox Dive?

Yes, and no, it kind of depends on the local laws. So long as your equipment is covered by your manufacturer guarantee, and you will have to bear in mind as will all diving the local laws and ...
Aravona's user avatar
  • 15.4k
12 votes

Does a diver's breath rate become slower when going deeper?

Your breathing rate is not affected, although experienced divers always try and breath slow, deep and continuous, to conserve air and keep airways open. The higher partial pressure of gasses does ...
AquaAlex's user avatar
  • 1,620
12 votes
Accepted

Cold water regulators and warm waters

It is likely your cold water reg has diaphragam-like first stage which makes it particularly suited for cold water as well as contaminated water (which is not necessary the case for piston first stage)...
Jack Glasshard's user avatar
12 votes
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How to avoid getting cold when diving?

It sounds like you need your very own wetsuit, preferably one that is made for cold waters. Not sure if you can be too warm in a wetsuit, honestly, I am not an expert in this, but you definitely need ...
april rain's user avatar
  • 3,482
10 votes
Accepted

Using mini scuba sets: 1L-3L tanks

TL;DR, short answer: NO, THEY ARE TOTALLY NOT SAFE TO DIVE WITH! YOU WILL DIE. Longer answer If you check out the description of such gimmicky gadgets, you will notice that they're billed as "...
Alexander's user avatar
  • 1,770
9 votes

When taking a Go Pro scuba diving, how would you mount it?

Personally while scuba diving I have it on a monopod with a strap around my wrist. Not only does this prevent bubbles clouding your shot, it allows you to extend it beyond your normal reach. Ever ...
Dynadin's user avatar
  • 3,155
9 votes

Is it worth getting a divemaster certification if I don't plan to work as a professional dive master?

How about leaving the PADI fold and moving on to other styles of diving, for example technical diving: where you can learn to do much longer dives with decompression (an hour at 30 metres?); where ...
GlennG's user avatar
  • 1,086
9 votes
Accepted

Limitations of altitude after scuba diving

I'm no expert, so take this with a grain of salt. Basically, someone has collected the statistics and done the number crunching and worked out the risk. There is no "one size fits all" ...
bob1's user avatar
  • 10.6k
8 votes
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What should I look for in a used wet suit?

You do not want a 6-7mm wetsuit for spring canoeing, you'd have trouble moving freely in it, and you would overheat very easily. They use 7mm wetsuits for arctic diving. I surf and swim in glacier ...
ShemSeger's user avatar
  • 53.6k
8 votes
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What are the pros and cons of both a DIN and a yoke valve for a scuba-diving regulator?

DIN is always a better connector than the older and inferior yoke format which for some reason is far more prevalent in the US and surrounding countries. There are several drawbacks to the yoke: the ...
GlennG's user avatar
  • 1,086
8 votes
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What are possible ways to drink on a long scuba dive?

I have no experience in this but It seems logical that you can drink while underwater. This thread seems to confirm that. Most importantly you should use a soft pouch as a container with a straw. ...
HTDutchy's user avatar
  • 1,970
8 votes

No Stop Limit for Recreational Scuba Diving

The amount of nitrogen in your body is only part of it. Nitrogen is absorbed quicker by your lipid, or fat, tissues at greater depths. The cut off point for a non-deep PADI qualified diver is 30m. ...
Dynadin's user avatar
  • 3,155
8 votes

How can divers be sure that there are no sharks or other lethal water animals where they dive?

People have varying levels of shark awareness, anxiety and tolerance. To start with, you're really quite unlikely to get eaten by a shark. Much more likely to drown for some reason. A big part of ...
Italian Philosophers 4 Monica's user avatar
7 votes

What locations to scuba dive inland in the UK?

In the south of England, the main three centres are Vobster Quay in Summerset: lots of attractions to play on and a tunnel to swim though (at an angle, so a good buoyancy test). Max depth circa ...
GlennG's user avatar
  • 1,086
7 votes

How to avoid getting cold when diving?

As an answer that will be of immediate use without investing a lot of money: You can wear two wetsuits, one over the other. I have done this in the past when the rental place couldn't provide a warm ...
fgysin's user avatar
  • 13k
7 votes

What are possible ways to drink on a long scuba dive?

Dehydration is a very bad thing when diving and can lead to DCS (Decompression Sickness) as the blood thickens. One of the most important scuba devices is a Pee Valve which allows you to urinate ...
GlennG's user avatar
  • 1,086
7 votes

No Stop Limit for Recreational Scuba Diving

Answering the specific question: why does a shorter but deeper dive leave a lower residual nitrogen limit than a longer shallower dive. Common gas absorption decompression models such as Buhlmann ...
GlennG's user avatar
  • 1,086
7 votes
Accepted

Why didn’t diver Yuri Lipski inflate his buoyancy control device?

It is always difficult commenting on what exactly happened and what was going through someone's mind. And in the end it is speculation. There is a good chance that he was overloaded and as he ...
AquaAlex's user avatar
  • 1,620
6 votes

If my depth varies +- 2m when breathing in and out, what's going wrong?

Moving vertically +-2m is a lot. An awful lot. It shouldn't be more than a few cms. This sounds like there's something else going on. Good buoyancy requires lots of practice to master. The best ...
GlennG's user avatar
  • 1,086
6 votes

What should I look for in a used wet suit?

Always check used wetsuits for wear, especially around seams, under arms, between the legs, and the seat. These areas typically wear through fastest, and although they are often strongest (extra ...
Rory Alsop's user avatar
  • 24.9k
6 votes
Accepted

Lead shot vs Lead block weights

Since no one has taken a stab at this I'll throw in my opinion even though I have zero dry suit experience. Lead Block/Bullet Weights Pros Cheap If you're willing to fiddle with them you can really ...
Erik's user avatar
  • 9,658
6 votes

How to avoid getting cold when diving?

Consider a semi-dry suit. Here is a description of one from Scuba Doctor: Semi-dry suits are effectively a thick wetsuit with better-than-usual seals at wrist, neck and ankles. The seals limit ...
Aralox's user avatar
  • 263
6 votes

No Stop Limit for Recreational Scuba Diving

As a rough rule of thumb, a dive at 45 metres is a ratio of 1:1 where every minute at that depth requires one minute of decompression stops. Therefore every dive to 45 metres is a decompression dive,...
GlennG's user avatar
  • 1,086
5 votes
Accepted

How to dry a BCD (Buoyancy Control Device)

Drying rate is proportional the relative humidity but in reverse. At 100% relative humidity you will not get any drying. England has as typical humidity of 70 - 90. Then on top of that the BCD in the ...
paparazzo's user avatar
  • 7,186
5 votes

How should latex socks be fitted to a drysuit?

I scuba dive with dozens of divers who exclusively used Viking drysuits. The photo you have shows a similar drysuit, though not as heavy duty. After about a dozen or two dives, each one of the ...
wallyk's user avatar
  • 1,319
5 votes

How many lumens for a diving torch?

Lumens is the amount of light emitted from your torch. If the same amount light is spread in a tight beam, say 6 degrees, it will appear much brighter than the same amount of light spread over a ...
GlennG's user avatar
  • 1,086
5 votes

What are the pros and cons of both a DIN and a yoke valve for a scuba-diving regulator?

It looks like a DIN valve can be used at higher pressures and has a more secure connection. Since the fitting is more secure, DIN valves allow the use of higher pressures, and are more suitable for ...
Charlie Brumbaugh's user avatar
5 votes
Accepted

What part of the world has the largest variety of corals?

What part of the world has the most varieties of corals in a concentrated area? Of coarse this question can only be qualified by an accurate definition of what the OP means by a concentrated area. ...
Ken Graham's user avatar
  • 9,609
5 votes
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Scuba diving right after passing certification

If your certification is to be PADI, and you go to a certified PADI diving shop/centre, you will be fine, I'm very sure. The instructors will most probably ask for your log book to assess your level ...
Dennis_DK's user avatar
  • 586

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