ivobj
Contributor
Don't hire a boat guy unless he has really big ears.
Big and functional...hehe, size is not always proof of effeiciency!!
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Don't hire a boat guy unless he has really big ears.
..snip..
Sound is attentuated at the cube of distance and considering most diesels are ~65db it doesn't take much distance, or waves for a dive alert's signal to attentuate. ..snip..
Then why use a bottom timer? Can't DIR divers count?
"1 Mississippi, 2 Mississippi, 3 Mississippi..."
DIR ... at least my understanding of it ... involves considering the conditions you're likely diving in and applying common sense when determining what gear to take ... not following some "formula" that somebody who's probably never dived in your local conditions came up with. That's partly what they mean by "thinking diver" ...
While you don't need a DIR boat, a complete stroke mess of a boat is a no-no for drift diving. In most cases the whole boat basically has to dive together and you use a float ball or shoot a bag for deco, depending on the conditions, type of dive, etc.
Don't hire a boat guy unless he has really big ears.