Morgana
regular
Reged: 28/08/2003
Posts: 11818
Loc: East Coast
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Following Lemain's interesting thread regarding the use of paper charts as a back up, and the mention of backup plotters, I thought it would be interesting to get a view on how much redundancy people have on board (excluding paper charts!)
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Bored?.... why not read my blog .... its the developing story of the trials and tribulations of boat ownership!
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Galadriel
regular
Reged: 19/01/2004
Posts: 5700
Loc: Chichester Harbour
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What you dont ask, is if there is any paper back up. One of my two plotters is a Yeoman, so in the unlikely event etc.....
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"You are young and life is long and there is time to kill today
And then one day you find ten years have got behind you"
Roger Waters 1972
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Morgana
regular
Reged: 28/08/2003
Posts: 11818
Loc: East Coast
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In the preamble above though I did mention that this was about electronic redundancy, and independant of paper charts....
What i'm trying to get a feel for, is how much backup people have for their electronic navigation environment.....
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Bored?.... why not read my blog .... its the developing story of the trials and tribulations of boat ownership!
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oilyrag
regular
Reged: 03/07/2002
Posts: 287
Loc: E Coast UK
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I, and I guess many others, have a plotter with a handheld battery powered GPS as backup...
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jordanbasset
regular
Reged: 31/12/2007
Posts: 123
Loc: Shropshire
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Besides possible length of time battery may last in a laptop are there any other reasons you have excluded them
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Apparently, 1 in 5 people in the world are Chinese. There are 5 people in my family, so it must be one of them. It's either my mum or my Dad, or my older Brother Colin, or my younger Brother Ho-Cha- Chu? But I think its Colin.
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Morgana
regular
Reged: 28/08/2003
Posts: 11818
Loc: East Coast
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Nope that was the main reason.... but actually I was interested in independent battery systems...
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Bored?.... why not read my blog .... its the developing story of the trials and tribulations of boat ownership!
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Oldhand
regular
Reged: 21/02/2002
Posts: 1765
Loc: UK, S.Coast
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Does a pencil wielding hand count as a back up plotter?
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Lemain
regular
Reged: 31/01/2004
Posts: 5223
Loc: Almerimar, Spain
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I know how hard it is to draft surveys but you missed an important point that the map ROM might be the item that goes wrong. I have two C-Map cartridge plotters but I only keep the one set on C-Map cartridges so if that fails I am stuck. I carry paper charts, though, so we ought to survive.
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Please turn on your nav lights at night
I have turned off PMs for the cruising season, instead please email to ybw.20.lemain@spamgourmet.com
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BrendanS
regular
Reged: 11/06/2002
Posts: 34003
Loc: Me: Wilts. Boat: Lymington
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My main plotter runs off boat battery, but also has internal battery that will be recharged fully and run for hours if boat battery fails. With backup hand held gps. Also have paper charts which I'm more than comfortable using if gps system should fail completely. If gps system hasn't gone down completely, I'd use the plotter internal battery to get me where I need to be, or if too far away, turn it off to save battery, and turn it on every half hour to plot position to check against dead reckoning, and still have hand held in reserve. The batteries would last longer than my fuel used this way.
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See http://www.frappr.com/ybw to add yourself to the forum map
and as everyone else is doing it
www.plaintalkconsulting.co.uk
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Marsupial
regular
Reged: 05/07/2004
Posts: 527
Loc: South and East UK
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Agreed, I ve been on boats motor and sail where everything is lost, no power, no leccy of any sort. I ve seen laptops hard discs fail on voyage, solid state plotter displays just stop working, auto pilots that steer their own course and on one memorable voyage along the south coast in a state of the art all singing and dancing mobo with a massive array of gizmos and toys our position was plotted on the A25 near gatwick airport - but only for a mile or so then we were off Dieppe fortunatley a few minutes later the hard drive failed (by the way the charts were correctly aligned with datums its just that marine leisure equipment is basically cr*p) so MY YEOMAN SPORT TOOK OVER connected via the ciggy socket with a garmin 12XL assisted by my plastimo handbearing compass - (it was a maiden voyage so I went equiped, was it difficult no did we need a plotter?, not really; most of the time you just concentrate on keeping the UK on the right when going west along the channel but it emphasize the fallabiity of "electronics" and talk of redundancy is meaningless if the single point of failure is a component in a distant satelite).
Do I use plotters yes of course - do I trust them - get a life!
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