4 messages.------Johnnie
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>From: [log in to unmask]
>Date: Wed, 13 May 98 15:54:46 -0800
>Subject: Re: nautical charts
Megan, et.al.: Well, this could be a very long answer but I'll cut to
the uh brief version.
I have never known anyone to use our NIMA aeronauticals
for flying and I would no one would. By the time these (TPC, ONC,
etc.) arrive they are well beyond their navigational expiration date.
These charts have expiration dates and I would think any pilot
(except, alas, Amelia Earhart unfortunately) would use only the latest
aeronauticals.
NIMA nautical charts also are obsolete by the time they
arrive here on GPO Depository which is anywheres from two to six
months after the publication date. Nautical charts can be updated, or
rebuilt, using Weekly Notice to Mariners in which all the latest
changes have been printed. These are usually changes in aids to
navigation such as buoy & beacon positions and sometimes major
engineering changes to port facilities. NIMA nautical charts all carry
a bold caveat: "Warning. The prudent mariner will not rely solely on
any single aid to navigation, particularly on floating aids." The SIO
Library also adds a stamp: "Library Reference Only. Not for
Navigation." I was advised by a NIMA person this would be a wise
disclaimer to put on all our charts. When NIMA charts are superseded
by a newer edition, the old edition gets a "Obsolete Edition. Not for
Navigation" stamp prominently on the chart. Very few Library nautical
charts are used for actual navigation as our fleet of research vessels
have their own charts. Our charts in the library are used mostly for
planning upcoming cruises or reviewing locations of previous cruise
legs or for island topography; there are many uses for nautical charts
other than navigation.
I would hope that the NIMA counselors would speak about any
liability issues as this is entirely their domain.
- Paul Leverenz
SIO Library
______________________________ Reply Separator _________________________________
>Subject: nautical charts
>Author: Maps and Air Photo Systems Forum <[log in to unmask]> at {ucsdhub}
>Date: 5/13/98 5:33 PM
----------------------------Original message----------------------------
Hi,
Hoping someone can clarify this for me. The Federal Depository Library
Manual states: "NOS aeronautical and nautical charts should be stamped 'Not
to be used for navigational purposes.'" Is this due to liability?
inaccuracy? age of the maps? What do you tell patrons who are looking for
charts for navigation?
Thanks in advance.
Megan Dreger
Government Publications & Maps Librarian
San Diego State University Library
San Diego, CA 92182-8050
Voice: 619-594-5287
FAX: 619-594-2265
Email: [log in to unmask]
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>Date: Wed, 13 May 1998 19:17:45 -0300
>From: Eduardo Pazera <[log in to unmask]>
>Subject: Re: nautical charts
They are no more liable for navigation purposes usually because of
the changes in magnetic deviation (showed in this charts as isogonic lines)
and some other changes that may happen (altitude, deep, etc...).But they
are good for use in some researches or for teaching purposes. I use old
Brazilian Aeronautical Charts (which are cheap...) for my classes in maps
reading.
--
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Eduardo Pazera Jr.
P.O. Box 5030
Joao Pessoa-PB 58051-970
BRAZIL
tel. 55-83-2501343, 9837534
fax. 55-83-2501377
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>Date: Thu, 14 May 1998 06:30:01 -0400
>From: Stephen Baig <[log in to unmask]>
>Subject: Re: nautical charts
Hi Megan,
I am able to give you my experience with the "not for navigation" stamp
as a developer/publisher of some specialized federal government maps.
Our Office of General Counsel advised (demanded??) that such a statement
be affixed to each of our charts to avoid liability in case of misuse of
the chart
by its users. Not because the chart data were faulty but because they were
ephemeral, changing in time. I suspect the same holds true for
nautical/aviation
nav charts kept in a Depository Library because the data on those charts also
changes with time. Most likely the librarians are not amending/emending
the charts with the informtion from e.g. the Notice to Mariners, as an active
user of the charts would/should be doing.
Stephen Baig
Oceanographer,
TPC/National Hurricane Center
Miami, FL
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>From: Philip Hoehn <[log in to unmask]>
>Sender: [log in to unmask]
>Subject: Re: nautical charts
>Date: Thu, 14 May 1998 08:27:40 -0700 (Pacific Daylight Time)
Hi Megan,
NOS told map librarians a few years ago it was a
potential liability problem not only for NOS but also for
the owning institution. Newest editions could well correct
previous errors or more likely add new navigational hazards.
One efficient way to do this is to have a stamp made up
that has both this message (we were told the shorter
"NOT FOR NAVIGATION" was OK, too) plus your library's
ownership info -- thus killing two birds with one stone (so
to speak). It's probably a good idea to do the same with
NIMA charts.
Phil
Phil Hoehn, Map Bibliographer
Branner Earth Sciences Library
Stanford University
Stanford, CA 94305-2210
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