diver 85
Contributor
String, I mean Mr P.O.----you want to run this one by me again..."Human eyes generally rely on contrast to make out objects -"......
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Ahem...Yes, String, I am with you again. I have dived extensively in the Red Sea and in some instances "live aboards" will drop 30 plus divers and cover them with zodiacs, I have been in the water with upwards of 100 divers in one small area and everyone gets by just fine.
As a dive boat captain in Key Largo ........
A safety sausage should be standard equipment for every dive. My preference is orange vs yellow because orange "lights up" with polarized lenses which most captains wear. A surface alert is also a great safety device.
Many divers in resort type dive locations like the Keys don't even wear a dive watch and have no idea of when 1 hour is up. This includes many supposed advanced divers too. Wear a dive watch, check your times, always know where the dive boat is moored in relation to your dive. It's basic navigation 101.
Nobody, not the captain, not the crew, not the coast guard, is responsible for planning and conducting a safe dive within your skills, experience, and training except the diver. Until you mentally accept responsibility for your behavior, and exercise risk assessment for every dive, you need to stay out of the water. Nobody can predict the future or plan for every unforeseen eventuality. But the basics that you consider should be waves, current, navigation, depth, air consumption, time, safety, and survival.
Keep diving and come down to the Keys: Caribbean style warm water reef diving in the continental United States.
One thing I did not mentioned in earlier posts is that if you want to improve your visibility, add some reflective tape to your safety sausage/smb's - especially for night diving
Second that recommendation, with one additional caveat. When you get your spool/reel, practice shooting the SMB/Lift Bag to the surface on a regular basis. Lines can be the greatest thing since sliced bread; wonderful tools - not only for shooting markers/bags but for navigation in low vis, marking exit points, depth measurement after a computer failure (all my lines are knotted for measurement in zero vis), dragging a flag, securing things, etc., etc... But... any time you're dealing with lines it's easy to make a mess of things; the key to making the line your best bud is to practice with it. Often.An additional suggestion... consider an inexpensive finger spool ...
Second that recommendation, with one additional caveat. When you get your spool/reel, practice shooting the SMB/Lift Bag to the surface on a regular basis. Lines can be the greatest thing since sliced bread; wonderful tools - not only for shooting markers/bags but for navigation in low vis, marking exit points, depth measurement after a computer failure (all my lines are knotted for measurement in zero vis), dragging a flag, securing things, etc., etc... But... any time you're dealing with lines it's easy to make a mess of things; the key to making the line your best bud is to practice with it. Often.
Rick