billskip
Well-known member
Atc.What is??
Atc.What is??
it would mean 4 different power source would have to crash .
They’ve managed in aircraft for quite a few years!
So what happens in the event of the GPS being corrupted by proximity to naval/military exercises, or total failure due to system issues, or solar activity or...............?
For daylight nav that's probably fine. For night nav the lights, light sequences etc do change and I wouldn't want to navigate the clyde in the dark with a 15-20 yr old chart that hadn't been corrected (because I have one that's about 10 yrs old which has a lot of corrections on it!).As long as the land hasn't moved to much most 'recent' charts are fine for years. I still use charts that are 15 to 20 years young and its only the buoys that move a bit and after a while they seem to move back into chart position.
Most chartplotters cope fine if the GPS feed is disconnected - they will still display the chart. Not its not so easy to get the dividers and parallel rule out to draw on the screen but for most navigation (especially with a rusty manual navigator) you probably aren't trying to be that precise anyway.So what happens in the event of the GPS being corrupted by proximity to naval/military exercises, or total failure due to system issues, or solar activity or...............?
Your paper chart is made on software systems! There's no reason to assume that printed charts are without errors.I haven't even gone sailing yet, but having a professional background in software, theres no way I'd be happy to rely solely on an electronic device when at sea! The idea of not having a paper chart is utterly terrifying, I honestly don't care how good the electronic ones are, a single problem with software and you're goosed and it can happen even to devices of the absolute highest quality. No amount of testing by a manufacturer can fully replicate real world use and whilst I'm guessing here, the last place I'd imagine you want to be discovering a software bug is in the middle of the Atlantic.
Would a nearby lightning strike not do this?
I can tell you for sure any lighting strike be it a direct hit or near by in no way going to wipe out all your equipment or some of it .I don’t think you can be sure one way or the other. It would depend on the boat ,where the lightning hit, the conductivity or insulation and where your Nav gear is .
So it it or it might not. Not something to loose a lot of sleep over just have a back up plan.
God bless Air Traffic Control.
Would a nearby lightning strike not do this?
I think commercial airliners have specific redundancies to mitigate the risk, smaller planes don't, but I'm also not sure if they constitute conductors. An interesting point you make, although I'd imagine aviation standards are incomparable to marine as there is a far greater risk to the wider public from aircraft.
No amount of testing by a manufacturer can fully replicate real world use and whilst I'm guessing here, the last place I'd imagine you want to be discovering a software bug is in the middle of the Atlantic.
I saw this in the Torygraph too, they were suggesting GEONAV was a popular alternative but I'd never heard of that kit. Anyone use it?
Also, I think this means that coded vessels would have to buy imray charts as I don't think any others are approved?
As long as the land hasn't moved to much most 'recent' charts are fine for years. I still use charts that are 15 to 20 years young and its only the buoys that move a bit and after a while they seem to move back into chart position.
Never sailed through wind farms but I assume they are 'lit'. Its the mussel farms on the south coast I'm concerned about and how well they are lit at night. Luckily most seem to be in bays that I presently normally bypass, especially at night.Not just buoys which move. Our charts from north of Portugal to UK are around 18 -20 years old and I certainly wouldn't trust them if returning to the UK, too many offshore wind farms have been constructed since.
Have you thought about getting your eyes testedNot just buoys which move. Our charts from north of Portugal to UK are around 18 -20 years old and I certainly wouldn't trust them if returning to the UK, too many offshore wind farms have been constructed since.