4 messages.------Johnnie ------------------------------------------------------------ >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 When NIMA charts are superseded by a newer edition, the old edition gets a "Obsolete Edition.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] ---------------------------------------------------------------------- >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. -- ---------------------------------------------------------------- Eduardo Pazera Jr. P.O. Box 5030 Joao Pessoa-PB 58051-970 BRAZIL tel. 55-83-2501343, 9837534 fax. 55-83-2501377 ---------------------------------------------------------------- ---------------------------------------------------------------------------- >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 --------------------------------------------------------------- >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 [log in to unmask]