-------- Original Message --------
Subject:        Question regarding soundings on nautical charts
Date:   Tue, 1 Feb 2011 10:21:13 -0700
From:   Ilene Raynes <[log in to unmask]>
To:     'Maps, Air Photo, GIS Forum - Map Librarianship'
<[log in to unmask]>



Okay, this may show our ignorance here at CU-Boulder as far as reading
nautical charts goes (but, keep in mind, we don’t have a whole lot of
ocean here in the Rockies), but can anyone tell us what the small number
to the lower-right of the sounding depth number is called? It looks like
an exponent number, but it’s to the lower-right of the sounding, not the
upper-right? Is it a form of measurement? So, if the sounding was “7”
and the chart was in meters, does the small number (let’s say a “4”)
mean four-tenths of a meter? Or something else entirely?

Thanks, and apologies if this seems a silly question.

Ilene

Ilene Raynes

University of Colorado at Boulder

Jerry Crail Johnson Earth Sciences and Map Library

Campus Box 184

Boulder, CO 80309

(303)-492-4487 (phone)

(303)-735-4879 (fax)

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