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  1. Subcooled

    Deep Blue Pro diver 200 question

    The Deep Blue Pro Diver 200 is cheap enough to be used as a hammer, but is it actually, in real life, waterproof at depths of ~165ft? It is said to be a "pro diver". Is this marketing hype or actual fact? I would use the watch for dry caving and for sump diving. I would actually smash it against...
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    Lightning strikes and diving

    Let us assume that I am diving in sweet water and a lightning strikes the water a little farther away, say 100 feet away. How would that affect me? - I was diving during a thunderstorm last week. That's why I want to know. Electricity will (probably) disperse in the water and not channel...
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    Cylinder cleaning (not for oxygen): Vinegar: The effect of 5% acetic acid on o-rings?

    I had a little "accident" while standing ten inches deep (no fins) in the bottom sediment of the local river and repairing the rudder of large boat. As a result, I now have some unidentified orange goo in one of my cylinders and it gives a burnt rubber taste to the breathing air. Ample rinsing...
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    Fact: Red light penetrates deeper

    I have experimental evidence of the fact that red light penetrates deeper than blue. When I start my ascent from total darkness at 15 feet, the first light I will see is red. Next, orange. Then it becomes green. And finally what I would call transparent and then I will break surface. I would...
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    34 dives to 15 feet in 4 hours - symptoms

    Background Recently I had to help a fisher to clear a bay for fyke net fishing. The place was littered with fyke net anchoring stakes that had to be removed before placing a new fyke net was deemed safe. Depth was 15 feet. Visibility varied between 0 and 25 inches. 13 stakes had to be recovered...
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    ... put more women in charge ... to foster collaborative conversations

    I did read this on Scubaboard: "We should seriously put more women in charge of ScubaBoard to foster collaborative conversations" There is no mention of sex or gender, just the concept of a "woman", and some implicit assumptions. I assume that the writer means sex + 'traditional' gender. The...
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    Better goodman handle (for Orcatorch D630)?

    Can you suggest me a minimalist rigid goodman handle without huge wheels and with a thinner handle to grab etc? I might also try to run a bungee cord over the light head in front of the button. This is my first goodman handle, so tell me if I have some strange ideas. The long story: I...
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    Dräger Lt. Lund II oxygen rebreather - what chemical?

    What was the chemical composition of the carbon dioxide absorbent in Dräger Lt. Lund II oxygen rebreather? Ca(OH)2 (as in limewater) or CaHNaO2 (from natron) or sodium peroxide Na2O2 or sodium hyperoxide NaO2 or something else? I am gathering information for a short article on Finnish...
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    Square o-rings for Apeks m500 dive watch?

    I need to replace the o-rings in my Apeks m500 soon and they are square. Where can I find such things?
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    La Spirotechnique 1906 Alize servicing?

    Alize free-flows. Any idea of how to service it for pool use?
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    Wearing a dive watch while drysuit diving...

    ...can pose certain challenges as all dive watches seem to have been designed for wetsuit use only. The straps are simply not long enough... But! There is a solution! A dog collar!
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    Unable to upload pictures

    I have used the internet since 1990 and now I cannot upload an image to Scubaboard. I would call that I problem. I've tried for 30 minutes at least. Nothing helps. I tried with Firefox. I tried with Chrome. The image is 243x700 pixels and 88kB and jpg and it simply does not upload. I do not...
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    90 degree fixed angle adapter for suit gas regulators LP port?

    I am carrying my suit gas bottle butt-mounted and I would like make it more streamlined and optimize hose routing. I plan to replace my DS4 with a proper suit gas regulator, something like these two in the pictures below... But I would like to add fixed 90 degree angle adapter to the LP port...
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    Best suit gas 1st stage for cold water?

    I have been using Apeks DS4 as my drysuit gas 1st stage. It is a little bulky. I would like to replace it with something cheaper, and possibly smaller. I will, however, dive in very cold water, around freezing point at worst. Which suit gas 1st stage would you recommend, and why? Free flows are...
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    Mares Nemo Excel strap width?

    I need a strap extension for my Apeks 500m dive watch. It came with a strap suitable for wetsuit use, but with a drysuit the Apeks 500m dive watch (probably made by Seiko?) is unusable. The strap is 20mm wide and I need an extension. Not a longer strap but an extension piece. Such a thing is...
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    Underwater positioning

    Some state of the art underwater communication.
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    Affordable LED dive light matching a 21W HID?

    I have a Tektite Expedition LS5 dive light which is rated at 750 lumens. My dive buddy however uses a 21W HID. It overpowers my dive light making communication really difficult. In an overhead / tec diving environment this is a problem. I'm quite fed up with the situation. I need a more...
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    List of museums of diving history?

    I would welcome some information on diving museums around the world. The big ones, the small ones, the strange ones, the private, the public, all of them. Name, website (if any), address/contact information/how to visit... In alphabetical order, first by country then by name: France Musée du...
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    Underwater "treasures" in city center

    There are an endless amount of bicycles (and bottles and mugs as well) along the piers. Traffic signs and cones, ad stands, benches, chairs and tables - even trolleys... Some phones and and wallets too. Phones and wallets also fall from bridges and stolen handbags can be thrown further into the...
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    Dive watch for serious use

    What is the worlds most readable publicly available/reasonably priced dive watch (big dial, self-illuminating)? [ignoring lcd/oled dive computers and bottom timers in this thread] I know that both Apeks and Poseidon make dive watches. Are the other ones worth to consider?
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