Join Date: Oct 2009
Location: Swarthmore, PA
Thanked 102 Times in 91 Posts
Rep Power: 8
Re: Cellphone Nav?
There is an easy way to determine whether your GPS capable cell phone would work as a GPS when out of reach of cell towers. Just put it into "airplane mode," then manually turn on the GPS functionality. Test it with a freestanding chart plotter program (like Marine Navigator Lite on Android) and see if it gets a fix.
Do not do this test with Google Maps, because it has to download its maps over the internet. Some chart plotter programs also requires internet connectivity to download the charts in real time, while others will cache the charts. Some, like NutiCharts, will cache the charts with the paid version, but not with the free version.
Marine Navigator caches the charts with both the paid and free versions.
Rick S., Swarthmore, PA
USCG Certified Captain, 50 Ton Master and OUPV
ASA Certified 101/103/104/105/106
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2001 Catalina 34MkII Tall Rig Breakin' Away, Universal Diesel M35B, Mantus 35 lb. anchor, sailing out of Rock Hall Landing Marina