Originally Posted by redbopeep
Cloud sourcing and cloud data is all very interesting. However, the result is going to have a great deal of uncertainty in it. Given enough data in a particular location, you will have a reasonable picture of what is going on. However, it will take huge numbers of data points to get a chart reliable enough for use in navigation.
What sort of corrections to GPS data? Are you collecting which GPS system and what triangulation/sat's are in play when the data is being collected? Depth--how will you actually know that the boater is providing you with accurate depth information rather than simply depth below the transducer?
Again, cloud sourcing is a wonderful way to get large and helpful/useful datasets. It isn't necessarily a good way to pin point something with accuracy or precision.
It seems to me that this is a good way to find places where more than usual caution is required. If you have a series of hints that a rock may be a mile north-east of it's charted location, for example, you may choose to take all chart data near it as a hint rather than a fact.
OTOH, a health mistrust of charts is a good idea lots of times anyway.