OffNav: offline gps navigation OffNav: offline gps navigation

the author of this app says:

OffNav is an android (>= 1.5) based moving map application intended for marine and land navigation.
Maps are created by the user and loaded on SD card. Neither Wifi nor mobile network connection are needed for map presentation. OffNav can be configured to run in either land or marine mode each having a separate user interface.
Points of interest (named way-points) can be added by the user based on GPS fix, WGS84 lat/long coordinates (in marine mode), tapping on map, street addressing (in land mode) or be loaded from a text file.
Anchor and proximity alarms can be set on marine mode.
Track can be saved to a file in both marine and land modes.
Turn-by-turn navigation including audio instruction is available in land mode (Wifi or network connection are needed to download route instructions).
A compass screen presents heading and bearing to way-point information, in addition to other navigational data, in both graphical and textual formats.

The user manual can be downloaded from ftp site: ftp://ftp.offnav.com
user: anonymous@offnav.com
password: not required
go to data folder