October 14, 2007 23:43
The Navionics charts that are compatible with MacENC (and supplied by Chartworld) are in encrypted S57 format. This requires a permit to decrypt the charts which are licensed to a particular computer (via a unique ID)
Navionics XL /Gold etc charts, as far as I'm aware, are not in encrypted S57 format, as there's no key required to decrypt the charts. I would assume (and I've emailed Navionics on this, but not received a reply) that Navionics XL / Gold charts are derived from the original S57 data it purchases / digitises from the various international hydrographic offices (and sells via Chartworld), but then enriches with additional data (tides, port facilities etc). However, this is based on a series of assumptions so I'd love to be proven wrong.
It all boils down to this:
Has anyone actually tried running Navionics XL / GOLD charts with MacENC?
The cartridges are standard Compact Flash cards, so any card reader would work. It should be pretty straightforward to see if they're in S57.. search the card for any CATALOG.031 file.
It is slightly worrying that working global charts can only be sourced from www.chartworld.com and not from Navionics officially though..
Navionics XL /Gold etc charts, as far as I'm aware, are not in encrypted S57 format, as there's no key required to decrypt the charts. I would assume (and I've emailed Navionics on this, but not received a reply) that Navionics XL / Gold charts are derived from the original S57 data it purchases / digitises from the various international hydrographic offices (and sells via Chartworld), but then enriches with additional data (tides, port facilities etc). However, this is based on a series of assumptions so I'd love to be proven wrong.
It all boils down to this:
Has anyone actually tried running Navionics XL / GOLD charts with MacENC?
The cartridges are standard Compact Flash cards, so any card reader would work. It should be pretty straightforward to see if they're in S57.. search the card for any CATALOG.031 file.
It is slightly worrying that working global charts can only be sourced from www.chartworld.com and not from Navionics officially though..
Never knowingly overcanvassed!