Chuck wrote:
>
> ----- Original Message -----
> From: "Lee Bell" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Wednesday, October 17, 2001 8:04 AM
> Subject: Re: [SCUBA-SE] Estimating visibility [Was: Diving in Cebu]
>
> > There is a technical definition for visibility that involves an object of
> a
> > specific size, shape and color that is, for the most part, useless to a
> > diver.  I do one of two things:
> Too complicated.  Just ask an instructor.  In fresh water, the viz is ALWAYS
> 40 feet.  In salt water it is ALWAYS over 100 feet.  Then ask a DM and get
> the correct answer.

Or out here the Instructor would say 10 ft and the reality sometimes is
most divers cannot see their fins...

Ken