NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: USN going paperless and celnavless
From: Bruce Hamilton
Date: 2009 Dec 16, 10:53 -0800
From: Bruce Hamilton
Date: 2009 Dec 16, 10:53 -0800
I would be very interested in the computer setup required to give a safe and reliable electronic chart and navigation system. I don't use the words computers and reliable in the same sentence especially when a network is involved
I imagine several independent stand alone computers each with their own uninterpretable power supply. They could be networked to a server for updates and information sharing, but have the files synced for when the network goes down, as it will. Multiple servers in a failover system can be quite relaible, but to get a system to be reliable enough for a warship must be quite a system.
I was on the bridge of a Canadian Coast Guard Vessel when they were first getting into electronic charts and they basically had 2 stand alone computers linked to the GPS and Radar, but all work was still done on paper charts.
For pleasure boaters doing offshore work I understand that 3 GPS with plotters is sort of a standard redundancy, but I would guess that paper charts are still carried, as well as a spare compass, spare watch and sextant. Redundant electricity is another problem as well.
For emergency navigation purposes, you don't need many charts. I imagine that chart from The Raft Book would even do in a pinch.
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I imagine several independent stand alone computers each with their own uninterpretable power supply. They could be networked to a server for updates and information sharing, but have the files synced for when the network goes down, as it will. Multiple servers in a failover system can be quite relaible, but to get a system to be reliable enough for a warship must be quite a system.
I was on the bridge of a Canadian Coast Guard Vessel when they were first getting into electronic charts and they basically had 2 stand alone computers linked to the GPS and Radar, but all work was still done on paper charts.
For pleasure boaters doing offshore work I understand that 3 GPS with plotters is sort of a standard redundancy, but I would guess that paper charts are still carried, as well as a spare compass, spare watch and sextant. Redundant electricity is another problem as well.
For emergency navigation purposes, you don't need many charts. I imagine that chart from The Raft Book would even do in a pinch.
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