Change History

GPSMAP 1623/1643/1653 software version 41.05

as of October 21, 2025

Changes made from version 40.04 to 41.05:

• Added support for collecting sonar readings while sonar display is paused.
• Added support for configuring Track settings on a connected inReach device.
• Added support for viewing the status of a message on a connected inReach device.
• Added support for automatically sending vessel data to emergency services when an inReach SOS is declared.
• Improved MARPA tracking performance and reliability.
• Improved the user experience on gauge pages by hiding the navigation buttons after a period of inactivity.
• Fixed prompting for SD card after every reboot.
• Fixed inconsistent engine labels across different pages.
• Changes to improve product security.
• Fixed an issue that could cause the device to reboot when viewing certain Garmin approved third-party charts.
• Other bug fixes and improvements.

Changes made from version 40.02 to 40.04:

• Improved privacy for EU RED Cybersecurity compliance.
• Other bug fixes and improvements.

Changes made from version 39.01 to 40.02:

• Added support for connecting to a Fusion RA800 device.
• Added vertical versions of Yamaha Troll and Autopilot overlay bars.
• Added new voice commands for Trolling Motor functions including Cruise Control, Heading Hold/Adjust, Prop Speed, Anchor Lock, and Directional Jog.
• Added new voice commands to show a saved favorite page.
• Added graphical representation for Polar Tables and a scale factor setting for polar table data.
• Added support for MAN engines.
• Added 'dot' draw type for AIS target trails.
• Added support for the Sionyx Nightwave Digital camera.
• Other bug fixes and improvements.

Changes made from version 38.03 to 39.01:

• Added vertical versions of the overlay toolbars.
• Improved the visibility and presentation of navigation aids.
• Added warning for AIS safety messages.
• Reorganized gauge functions to new 'Gauge' category.
• Added Graph layout options to gauge pages.
• Added warning when Trolling Motor compass is experiencing interference.
• Improved user experience for restoring the default view of gauge pages.
• Fixed issue with handling NMEA 2000 alert escalation.
• Improved transmission of NMEA 0183 navigation data when using Go To navigation.
• Fixed fuel capacity error with Yamaha gateway.
• Other bug fixes and improvements.

Changes made from version 37.01 to 38.03:

• Added stern line option on radar and charts.
• Added AIS target capacity alarm when tracking large number of targets.
• Improved management of lost AIS target alarms.
• Improved status and alarm visibility on the menu bar.
• Improved diagnostic messages during software updates in the event an error occurs.
• Added support for the Yamaha Joystick Hold feature.
• Added 'L/nm' as a possible unit for Yamaha fuel gauges.
• Added support for new manufacturer of Yamaha Bow Thruster integration.
• Added support for Yamaha electric motor products.
• Fixed an issue that caused shallow rock depths to show without red text.
• Fixed an issue that caused inconsistent display of spot depths.
• Fixed an issue that caused Track Points to vanish from behind a vessel in some circumstances.
• Fixed an issue where G3 charts would not draw if they crossed the antimeridian.
• Other bug fixes and improvements.

Changes made from version 36.12 to 37.01:

• Added support on the SurroundView Page for an audible indicator which can be enabled to alert the operator as the boat gets closer to a dock or another boat. In addition, Distance Markers and Visual Bumper can now be set to Active to provide additional visual feedback for nearby obstacles.
• Added the ability to enable or disable the display of seabed areas on the Navigation and Fishing Charts. This control is only displayed when seabed area data is available. Added the ability to review additional information regarding the nature of the seabed.
• Added the ability to disable Auto Guidance+ alarms or snooze them for the duration of the power cycle. Grouped similar Auto Guidance+ alarms to reduce the frequency of these alarms.
• Added support for changing how VRM/EBL floating origins move relative to vessel movement.
• Added support for using the advanced, chart-style heading line on radar overlay.
• Added support for displaying the vessel's true-scaled outline on radar pages. Added support for configuring the radar scanner device position and offsetting returns relative to the scanner.
• Added ActiveCaptain Community Points to search results along with other search improvements.
• Added support for pairing multiple headsets for the Garmin Voice Control feature.
• Added support for the Garmin Voice Control feature to control the Garmin Boat Switch and standard NMEA 2000 digital switches.
• Added support for displaying electric engine data received from NMEA 2000 standard PGNs.
• Replaced autopilot Wind Limiter setting with Wind Gain that allows tuning response for upwind and downwind points of sail.
• Added support for calibrating the steering alignment for Force trolling motors.
• Added support for multi-zone stereo volume adjustments to maintain a proportional relationship between zone volume levels.
• Updated OneHelm to use hostname to retrieve web content.
• Added the ability to show and hide functions within the home page.
• Added a database with polar tables for common sailboats.
• Fixed an issue which caused the Level Calibration, Tank Number, and Engine Number buttons to be hidden for GFS 10 setup.
• Fixed an issue where third-party input devices connected through an Empirbus Connect 50 could have their originally assigned station overwritten in certain situations.
• Improved LakeVu and g3 Auto Guidance calculations speed when the path passes through narrow channels.
• Fixed an issue where sonar pages would always select water speed, when available, instead of the selected speed source.
• Fixed an issue where an incorrect arrival time was displayed when selecting an active route on the chart.
• Improved the accuracy of tidal stream calculations.
• Fixed an issue where the LiveScope water temperature wasn't available to display on the chartplotter.
• Fixed an issue where cameras stayed disconnected after a network error.
• Fixed an issue where Onehelm functions on the home page in certain situations would show the incorrect icon and link to the incorrect Onehelm view.

Changes made from version 36.00 to 36.12:

• Corrected the display of negative intertidal depths and other chart depths that are displayed with an underline.

Changes made from version 35.30 to 36.00:

• Improved the image quality of relief shading charts.
• Improved the ability to recover from an interrupted Garmin Navionics+ map update.
• Added preferred sailing race start line end (port/starboard) and Start Line Bias data to Start Line Guidance page.
• Prevented engine data from the Yamaha gateway from being processed twice.
• Added support for selecting whether Power-Pole Shallow Water Anchors should stow or remain deployed when the Garmin Force trolling motor is stowed.
• Prevented gray areas from appearing outside irregular Garmin Navionics+ chart boundaries.
• Improved the presentation of multi-line text and label placement on Garmin Navionics+ charts.
• Updated the Boat Status field of the Mercury Gauge Page to show which Mercury features are active.
• Improved the user experience of setting up custom combo pages for boat builders by providing optional grid lines and allowing elements to 'snap' to the grid.
• Added the ability for boat builders to set gauge and switch backgrounds to transparent to better integrate these components into custom background images for custom combo pages.
• Added support for formatting the ActiveCaptain Card to quickly delete all files from it and restore it to an empty, blank state.
• Fixed an issue that affected the density of depth contour labels in some situations.
• Added the possibility to select the source for Total Fuel Remaining from Yamaha data or computed data from the fuel flow.
• Improved the relief shading chart presentation by preventing un-surveyed areas from obstructing high-resolution relief shading content beneath them.
• Other bug fixes and improvements.

Changes made from version 35.10 to 35.30:

• Fixed an issue preventing some radar scanners from displaying their maximum range.
• Fixed an issue where the keel offset setting would be set correctly, but display 0 when using a GSD 25 or GPSMAP 7400/7600xsv with only a 12-pin transducer.
• Fixed an issue that could cause the device to reboot when viewing certain Standard Mapping charts.
• Fixed an issue that could cause the stern guides for the Surround View Camera System to become misaligned in some situations.
• Other bug fixes and improvements.

Changes made from version 34.00 to 35.10:

• Added support for multiple Traditional, ClearVu, and SideVu sonar views in the same Combo with each displaying sonar from a specified transducer.
• Removed Traditional, ClearVu, and SideVu sonar source selection from Settings->Communications->Preferred Sources.
• Improved Sonar Setup->Source menu to show transducer names.
• Removed the dedicated Split Zoom Traditional Sonar function from the Sonar Category. Split Zoom may be enabled from any Traditional sonar window.
• Added the ability to toggle range synchronize on or off for multiple Traditional and/or ClearVu functions in the same Combo.
• Added the ability to toggle sonar scrolling synchronization on or off for Traditional and/or ClearVu functions in the same Combo.
• Added a toggle to the Frequency menu to select between low and high channels when using a dual-band CHIRP transducer.
• Added the option for boat builders to create custom combo pages to create a more branded user experience for their customers.
• Added an animated graphic indicating the built-in map is being updated and a banner indicating if an update was interrupted. Built-in map update progress is visible on the Software Information page.
• Added support for up to two radar guard zones.
• Added support for up to two radar VRM/EBLs.
• Added support for moving the origin of VRM/EBLs away from the vessel.
• Added support for outputting new NMEA0183 sentences (TLB/TLL/TTD/ZDA).
• Added new commands for Garmin Voice Control feature: Backlight Range.
• Added support for reading large capacity (exFAT formatted) cards up to 1TB via Built-In Card Reader.
• Added support for reading large capacity (exFAT formatted) cards up to 1TB via External Card Reader.
• Added support for engaging the autopilot in Low Speed Heading Hold for more responsive rudder control at low speeds.
• Added MFD support for an AX8 FLIR thermal Camera, including handling of the camera's user configurable thermal alarms.
• Added indication in the System Information page when this device is displaying the built-in map from another chartplotter on the network.
• Fixed an issue which prevented route labels from showing or hiding when the setting changed.
• Fixed an issue that prevented the tide or current station selected from the chart information menu from displaying in the tide or current review page in certain situations.
• Fixed an issue that could cause the Weather Layer setting to turn off after the device is power cycled.
• Fixed an issue that prevented 100% from being selected as a calibration point for the GFL 10.
• Fixed an issue where the user would be unnecessarily notified of entering and exiting boundary areas on power-up.
• Other improvements and bug fixes.