NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Varuna -- Abandoned due to Loss of Power
From: Bruce Cutting
Date: 2017 Sep 11, 11:54 -0600
From: Bruce Cutting
Date: 2017 Sep 11, 11:54 -0600
Seaclear II and OpenCPN - both FREE - applications display NOAA ENC charts (They also display RNC charts) > << there are now inexpensive apps available for iPads and their non-Apple > equivalents that can display actual ENC charts. >> > > Nobody can display ENC charts, because ENC is an archive format based on > ISO 8211 and S-57. In all cases, the ENCs need to be converted to SENCs > (System Electronic Nautical Chart) to be displayed. So every ENC > Stakeholder has their own SENC format which is proprietary and closely > guarded. Some systems convert the ENC to SENC on the fly and store the > SENC internally. Other systems have tools to pre-convert the ENCs to > SENCs, and others convert it and put the SENC on a cartridge. So from ECS > to ECDIS systems, there isn't much difference in the process, but the > results may be dramatically different. > > << Do not confuse recreational boat chartplotters and their charts with > government issued ENC charts. >> > > The warning letter I received from IHO was regarding inconsistencies of > the government issued ENCs, from various different national HO agencies. > So we have acknowledged discrepancies of the government base data, then it > is converted by the display device according to its own interpretation, > and we end up with a 2 tier game of Password. Be careful folks. > > For those who are looking for the most reliable chart data, worldwide, the > best way to get it is to go to the NGA website and download the Notices to > Mariners and Light Lists for your area, and plot them on your chart. > > Regards, > Pete > > > > : > http://fer3.com/arc/m2.aspx/Varuna-Abandoned-due-Loss-Power-Palmer-sep-2017-g40013
