Re: How are you guys determining vis?

dive-instructors.com, the first place to look for a dive instructor

[ Follow Ups ] [ Post Followup ] [ California Scuba Diving BBS ] [ FAQ ]

Posted by Chuck Tribolet on March 11, 2007 at 20:04:53:

In Reply to: How are you guys determining vis? posted by Eric S on March 11, 2007 at 18:22:09:

When my grey anchor is just visible against the tan sand. And
there are markers on the anchor line so I have a pretty good
measurement of how far from the anchor. I can usually see a
high contrast target (sand/rock boundary) about twice is far.

The OFFICIAL way to measure vis is with a Secchi disk, which is a
rather high contrast target. http://en.wikipedia.org/wiki/Secchi_disk

Follow Ups:

Optional Link URL:
Optional Link Title:
Optional Image URL:
Post Background Color: White     Black
Post Area Page Width: Normal   Full
You must type in the
scrambled text key to
the right.
This is required to
help prevent spam bots
from flooding this BBS.
Text Key: