Fixed potential issue where some 172C/178C plotters may suddenly not be able to achieve a GPS fix after a power cycle.
Changes made from version 2.80 to 2.90:
Fixed issue where items that are not drawn could be highlighted on the chart.
Changes made from version 2.70 to 2.80:
Fixed problem with NMEA output stopping for a few minutes at 00:00:00Z.
Incorporated recent changes to the Daylight Savings Time schedule to properly detect when DST starts and stops.
Changes made from version 2.60 to 2.70:
Added production support for different sonar components.
Changes made from version 2.50 to 2.60:
Fixed SBAS compatibility issues with the Japanese MSAS system.
Changes made from version 2.40 to 2.50:
Added support for receiving NMEA DSE sentence.
Fixed possible shutdown problem when restoring defaults on the Sonar page.
Corrected potential issue with displaying sonar in base-page-overlayed data boxes.
Improved language support by filling in missing translations.
Corrected problem with compass cardinal direction letters when using Greek language.
Changes made from version 2.30 to 2.40:
Improved SBAS search and selection process.
Changes made from version 2.20 to 2.30:
Added German tide support.
Made this product compatible with MarineUpdater for easier software updates.
Added Greek language support.
Added Icelandic grid support.
Fixed Recommended Route line review problem where associated depth and/or description text was not being displayed.
Fixed problem with Restore Factory Defaults function so that it now appropriately resets the sonar settings on a GSD-20 if there is one attached.
Corrected problem with date displayed on the tide page for tide stations in the South Pacific.
Corrected minor problem that prevented Daylight Savings Time detection from working properly in the Southern Hemisphere when rolling over to a new year.
Fixed potential problem with displaying extremely high or low resolution BlueChart maps.
Improved appearance of blue colors when the backlight is set to one of its two lower levels.
Fixed problem with violet, blue and amber marine lights.
Added support for new Artificial Reef and Drilling Rig BlueChart point types.
Corrected various Italian language translations.
Fixed problem with scroll-bar not working on the exit find and review pages.
Changes made from version 2.10 to 2.20:
Fixed a problem where underwater waypoints stored the current water temperature instead of the sonar history column's water temperature.
Fixed a problem that could cause the Map page's 'digital data' fields to display improperly.
Improved the tide chart interface. Now the tide chart uses a single time axis to display tide heights using your local time.
Added foreign language translations for 'Submerged Wreck' and 'Underwater Rock'.
Increased the maximum number of maps that can be displayed to 1050.
Improved the track log reduction algorithm when navigating a track that contains 50 or fewer points.
Fixed a potential problem associated with the Bottom Lock span feature.
Fixed one-hour-early moonrise, sunrise, moonset, and moonrise predictions when looking one year or more into the future.
Unit now displays a message when the active track log is full.
Unit is no longer allowed to power-up with the minimum backlight setting. This prevents potential confusion as to whether the unit has powered on or not.
Added Universal Time ( UTC ) format.
Added 800 mi, 1200 km, or 800 nm items to the 'Track Up Below' list.
Added the mode indicator to the GPVTG NMEA output sentence.
Improved behavior when trying to compensate for a backlight error, if one is detected.
Fixed user-card-transfer problem that caused unintended modification of waypoint symbols in routes with international border endpoints.
Changes made from version 2.00 to 2.10:
Fixed problem with connecting a GPSMAP 172C to a GSD-20 remote sounder module.
Fixed bug associated with doing a 'find' involving 'Marine Services'.
Modified behavior of User Card Merge feature to not overwrite waypoints of the same name unless the position of the waypoint is also the same. As an alternative, a unique waypoint with a slightly different name will be created.
Corrected Daylight Savings Time problem with some Canadian tide calculations.
Fixed various issues relating to user-card transfers.
Changed the following BlueChart map labels:
'Non-Dangerous Rock' is now 'Underwater Rock'
'Submerged Wreck, Non-Dangerous' is now 'Submerged Wreck'
Corrected Australian moon phase calculation errors.
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