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I guess you mean Alkalines? NiCds are rechargeable.just remember to keep the batteries current... and never use rechargeables on something like that they don't last as long as nicads do.
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I guess you mean Alkalines? NiCds are rechargeable.just remember to keep the batteries current... and never use rechargeables on something like that they don't last as long as nicads do.
The revolutionary UDI device combines world-first two-way digital messaging technology, SOS and homing capabilities, a state-of-the-art dive computer and 3D compass – for a complete underwater system that let’s you share, connect and stay safe.
I guess you mean Alkalines? NiCds are rechargeable.
That is why we carry mirrors, SMB's, whistles, lights, etc. Hopefully there is some kind of protocol put in place to do everything possible to prevent a lost diver in the first place, and a plan in case something does go wrong. Self rescue 10 miles from shore, in rough seas, is not likely, especially at the mercy of a 5 knot current.when all geeky technology fails where will "you" (generic you) be and how will you do for yourself. It is a question we all need to answer for ourselves..
While this is a diving forum, this comment applies to anyone on the water.. You can have x amt of redundant systems and a battery operated device.. IF all of them fail, what will you do? It is a question anyone who plays on Mother Ocean needs to ask and answer for themselves. YMMV
Any kind of bright light could signal someone using a FLIR from the sky. Thank goodness our Coast Guard is well equipped!Just remember a flashlight in the dark can be seen by a boat as:
starlight reflection on the water
blending with the lights on land
blending with the stars themselves.. esp if you are bobbing up and down in waves..
A strobe of some kind works a bit better...
Their outstretched hand was seen above a wave by a Sheriff's Marine Patrol Deputy off a USCG boat using NVG's. Something like 10 miles from their LKP -- SKilled SAR team effort+Good search Equip and a very lucky natural 20 dice roll...
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I have considered all sorts of gizmo's over the years for drift diving. Using sealed pvc tubes with smoke flares wieghted with lead to be nuetrally bouyant and diveable. Those long vinyl rolled up tale tails would be great from the air. I am getting the Nautilus. If nothing else it is a divable VHF radio. :30 minutes of talkie time is short but used correctly it is a life saver. The distress beacon would be great if more radios had the DSC 70.
Two LED back up lights has a long burn time but as said that could look like a lot of things. I normally dive during the daytime so I always thought a orange smoke flare would be best unless the wind was really howling in a sudden rainstorm of limited vis.
The best defense is a good offense. Listen to the briefing and LEARN how to navigate with a compass. This way you will come up where the Dive op will be looking for you.. in this specific case they were on a private boat and well.... no speculation but we have all seen them...