About navCenter
navCenter enables your iPhone/iPad/Mac/Watch to operate as a multifunctional display (MFD) for NMEA data (including AIS) and as an autopilot remote control for SeaTalk1(TM) and SeaTalkNG(TM) autopilots. navCenter connects...
navCenter enables your iPhone/iPad/Mac/Watch to operate as a multifunctional display (MFD) for NMEA data (including AIS) and as an autopilot remote control for SeaTalk1(TM) and SeaTalkNG(TM) autopilots. navCenter connects to your boats instruments via a WiFi gateway and can handle both NMEA2000 and NMEA0183 formats. Information on WiFi gateways can be found here: https://www.guardiandigital.tech/navCenterGatewaysMultiplexers.html navCenter is able to control SeaTalkNG(TM) and SeaTalk1(TM) autopilots when partnered with a compatible WiFi multiplexer or Gateway. More information on the autopilot remote control can be found here: https://www.guardiandigital.tech/navCenterAutopilotRemote.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ privacy policy: https://www.guardiandigital.tech/html/privacyPolicy.html
Version History navCenter now supports AIS input via NMEA2000 and SeaTalkNG formats as well as NMEA0183 Users able to enter their own boat's MMSI so that any AIS records for their own boat are ignored for CPA processing. The CPA (Closest Point of Approach) at which a vessel of Type A or B is considered to be dangerous is now user definable. AIS Range now begins at 0.125 NM and all AIS Reports are enhanced to show greater detail. 4.2.0 11/09/2025 All autopilot controls are now able to display the angle of the boat's rudder. 4.1.0 10/17/2025 Enhanced AIS display and reports Logging system upgraded to cater for concurrency and multiple input streams. 4.0.3 10/08/2025 When the AIS View cannot calculate CPA because of missing information it now displays a View listing what information is missing. More detail will be added to this View over time. 4.0.2 09/08/2025 Allows multiple AIS views may be displayed on the same Page Introduces the ability to draw the projected position for all AIS Stations using the 6 minute rule. This is switched on by default but can be set off in AIS Settings Improves data transfer between iPhone and Watch Adds code to BLE processing to trap any errors returned from CoreBluetooth when setting up the GATT. 4.0.1 08/27/2025 AIS Radar View - (https://www.guardiandigital.tech/navCenterAis.html) Dual input data sources - (https://www.guardiandigital.tech/navCenterDualInputSource.html) 4.0.0 07/23/2025 Extends iConnect to enable devices running MacOS (Mac or MacBook) to act as an iConnect Client or Server. Corrects bug preventing Location Services from operating correctly. 3.2.1 12/06/2024 3.2.0 Copies of navCenter running on different devices are now able to share both instrument data and control of a vessel's autopilot. navCenter running on an Apple Watch is no longer restricted to its paired iPhone; a Watch can now access both instrument data and control of a vessel's autopilot by connecting to navCenter running on any iPad or iPhone. More information can be found here: https://www.guardiandigital.tech/navCenterIConnect.html 3.2.0 11/12/2024 Corrected an error in the logging system. 3.1.10 09/03/2024 3.1.9 Apple Watch is now able to display a boats current data and control the autoPilot while navCenter is running in background mode on the iPhone. This means that the Apple Watch is able display your boat's current data and control the autopilot while the paired iPhone is being used to check eMails, make a phone call etc. Running an app in Background is at the discretion of iOS. So if your iPhone battery is less than 20% or your phone is very busy running a foreground app iOS may occasionally decide not to allow navCenter to run in the Background. For NMEA 0183 check digits can now be processed as required - they must be present and correct (Default) optional - if present they must be correct ignored - check digits may or not be present but they will be ignored. 3.1.9 08/27/2024 navCenter's autoPilot remote control is able to initiate an AutoTack when in Wind mode. WindGauge contains a button bottom right of screen to cycle through Apparent, True and Ground Wind. Apple Watch can use the Crown to browse sequentially through data views. Temperatures may be displayed in Kelvin, Centigrade or Fahrenheit 3.1.8 07/23/2024 The following NMEA values are calculated and can be found under "Computed Values": VMC (Velocity made good on course to waypoint; View "VMC nC" WCV (Waypoint Closing Velocity); View "WCV nC" Noe that both of the above display the same data value; they just have different names. 'VMC' is in common use while 'WCV' is the NMEA standard name. True Wind Speed and True Wind Angle (Wind over the water); View "Wind True nC" Ground Wind Speed and Angle; View "Wind Ground nC" VMG (Velocity made good to or from (value preceded with a minus '-') the True wind); View "VMG nC | VMG nC Summary" TCP Host address may be specified as a Hostname or IP Address. 3.1.7 07/04/2024 Corrected internal byte order for format MXPGN for all Heading and Wind datum changes Technical changes to prepare navCenter for introduction of Apple's Swift version 6. 3.1.6 05/25/2024 3.1.5 (15) If a user has disabled Local Network or WiFi access for navCenter an error message will be generated generated when attempting to connect to a local WiFi network as navCenter must be able to access WiFi and a local network in order to connect to a vessel's navigation instruments. The Autopilot Remote Control for SeaTalk1 has been updated to allow direction commands to be sent for all status values of the SeaTalk1 autopilot. This functionality is controlled by a setting off the Autopilot Settings menu. navCenter dynamically determines the source/target address of the SeaTalkNG Autopilot. The Autopilot Settings menu displays the autopilot's source address. A New View called "N2K" under "Environment" Group also displays the detected autopilot's source address. A bespoke Alert is now used to offer the ability to Confirm or Cancel a SeaTalkNG Autopilot's change to Track mode. Data ageing is now accurate to a few milliseconds and thus the Watch is now able to indicate when data it displays is older that the time limit set in navCenter's Settings. When NMEA data is marked aged only the individual value is shaded. 3.1.5 05/06/2024 Version 3.1.4 ensures that the bytes making up a binary numeric value represented by N2K format $MXPGN are in the required order. All other N2K formats are unaffected by this change. 3.1.4 03/10/2024 Logging of autoPilot control actions (.pilot) updated to include $PSMDST sentence. 3.1.3 02/28/2024 nC is now able to read N2K messages in $PCDIN format. nC offers supports for a new device, N2K0183, from Vela-Navega. N2K0183 is an NMEA 0183 - 2000 Bridge and WiFi Gateway.combined. N2K0183 supports a range of formats and an Evolution AutoPilot can be controlled by nC when using N2K0183 set to "N2K ASCII format". Logging of autoPilot control actions (.pilot) improved. 3.1.2 02/27/2024 A facility has been introduced to allow incoming NMEA0183 data to be recorded to a log. These logs may then be transmitted via eMail for later analyses. The User Interface for the Pilot Remote has been updated to give an improved user experience when confirming a large heading change for SeaTalkNG pilots. Pilot settings are now accessed via a dedicated Menu button alongside the Pilot information bar. 3.1.1 01/15/2024 navCenter's Pilot View is now able to remotely control both Raymarine SeaTalkNG™ and SeaTalk1™ autopilots(SeaTalk1 was originally known as SeaTalk). 3.1.0 11/10/2023 App description updated to provide more information on the current and planned functionality of the autopilot remote control. 3.0.5 07/24/2023 Corrected an error in simulation files which was preventing users from properly evaluating the app GPS data can now be read from the ships instruments or from the Device itself; choice is made in Settings. COG from Apple Device or vessel's instruments may be displayed as m/s, k/h or knots Console View can now send its contents via eMail A new Input Data Summary View is available to provide a summary of Sentences / PGNs received. The Data Summary View is also able send its contents via eMail 3.0.4 07/12/2023 3.0.3 Includes: New views to display: Wind Magnetic, Wind True WindWater (i.e. Wind with reference to the water - sometimes referred to as the "True wind") WindGround (Wind with reference to the ground. Data selection when setting up the Watch displays is now also split into Groups. 3.0.3 06/26/2023 3.0.1 Updates include: A View may be loaded on app launch to prompt new users on how to link navCenter to their boat if they have purchased or subscribed to navCenter but are still using a simulation file. Data Views are now grouped to simplify and speed up the process of selecting a new View. NMEA 2000 support extended to include format !PDGY User data is automatically converted from version 2 or version 3.0.0 to 3.0.1 on install 3.0.2 06/23/2023 3.0.1 Updates New View loaded on app launch to prompt new users on how to link navCenter to their boat once they have purchase or subscribed but are still using a simulation file. Data Views are split into groups to simplify choosing a new View Support included for NMEA 2000 format !PDGY User data is automatically converted from version 2 or version 3.0.0 to 3.0.1 on install 3.0.1 06/22/2023 Version 3.0.0 Includes: - support for NMEA200 using the following input formats, "Yacht Devices RAW", NMEA 0183 Sentence MXPGN and "Actisense ASCII" - A View "Console" which displays the last 50 messages sent to navCenter's internal console - conversion code to carry forward any customised Views and settings from the previous version 2.4.1 3.0.0 06/16/2023
Previous Versions
Here you can find the changelog of navCenter since it was posted on our website on 2023-07-07 14:02:42.
The latest version is 4.2.0 and it was updated on 2026-06-16 08:33:26. See below the changes in each version.
navCenter version 4.2.0
Updated At: 2026-06-16
Changes: Version History navCenter now supports AIS input via NMEA2000 and SeaTalkNG formats as well as NMEA0183
Users able to enter their own boat's MMSI so that any AIS records for their own boat are ignored for CPA processing.
The CPA (Closest Point of Approach) at which a vessel of Type A or B is considered to be dangerous is now user definable.
AIS Range now begins at 0.125 NM and all AIS Reports are enhanced to show greater detail. 4.2.0 11/09/2025 All autopilot controls are now able to display the angle of the boat's rudder. 4.1.0 10/17/2025 Enhanced AIS display and reports
Logging system upgraded to cater for concurrency and multiple input streams. 4.0.3 10/08/2025 When the AIS View cannot calculate CPA because of missing information it now displays a View listing what information is missing. More detail will be added to this View over time. 4.0.2 09/08/2025 Allows multiple AIS views may be displayed on the same Page
Introduces the ability to draw the projected position for all AIS Stations using the 6 minute rule. This is switched on by default but can be set off in AIS Settings
Improves data transfer between iPhone and Watch
Adds code to BLE processing to trap any errors returned from CoreBluetooth when setting up the GATT. 4.0.1 08/27/2025 AIS Radar View - (https://www.guardiandigital.tech/navCenterAis.html)
Dual input data sources - (https://www.guardiandigital.tech/navCenterDualInputSource.html) 4.0.0 07/23/2025 Extends iConnect to enable devices running MacOS (Mac or MacBook) to act as an iConnect Client or Server.
Corrects bug preventing Location Services from operating correctly. 3.2.1 12/06/2024 3.2.0
Copies of navCenter running on different devices are now able to share both instrument data and control of a vessel's autopilot.
navCenter running on an Apple Watch is no longer restricted to its paired iPhone; a Watch can now access both instrument data and control of a vessel's autopilot by connecting to navCenter running on any iPad or iPhone.
More information can be found here: https://www.guardiandigital.tech/navCenterIConnect.html 3.2.0 11/12/2024 Corrected an error in the logging system. 3.1.10 09/03/2024 3.1.9
Apple Watch is now able to display a boats current data and control the autoPilot while navCenter is running in background mode on the iPhone.
This means that the Apple Watch is able display your boat's current data and control the autopilot while the paired iPhone is being used to check eMails, make a phone call etc.
Running an app in Background is at the discretion of iOS. So if your iPhone battery is less than 20% or your phone is very busy running a foreground app iOS may occasionally decide not to allow navCenter to run in the Background.
For NMEA 0183 check digits can now be processed as
required - they must be present and correct (Default)
optional - if present they must be correct
ignored - check digits may or not be present but they will be ignored. 3.1.9 08/27/2024 navCenter's autoPilot remote control is able to initiate an AutoTack when in Wind mode.
WindGauge contains a button bottom right of screen to cycle through Apparent, True and Ground Wind.
Apple Watch can use the Crown to browse sequentially through data views.
Temperatures may be displayed in Kelvin, Centigrade or Fahrenheit 3.1.8 07/23/2024 The following NMEA values are calculated and can be found under "Computed Values":
VMC (Velocity made good on course to waypoint; View "VMC nC"
WCV (Waypoint Closing Velocity); View "WCV nC"
Noe that both of the above display the same data value; they just have different names. 'VMC' is in common use while 'WCV' is the NMEA standard name.
True Wind Speed and True Wind Angle (Wind over the water); View "Wind True nC"
Ground Wind Speed and Angle; View "Wind Ground nC"
VMG (Velocity made good to or from (value preceded with a minus '-') the True wind); View "VMG nC | VMG nC Summary"
TCP Host address may be specified as a Hostname or IP Address. 3.1.7 07/04/2024 Corrected internal byte order for format MXPGN for all Heading and Wind datum changes
Technical changes to prepare navCenter for introduction of Apple's Swift version 6. 3.1.6 05/25/2024 3.1.5 (15)
If a user has disabled Local Network or WiFi access for navCenter an error message will be generated generated when attempting to connect to a local WiFi network as navCenter must be able to access WiFi and a local network in order to connect to a vessel's navigation instruments.
The Autopilot Remote Control for SeaTalk1 has been updated to allow direction commands to be sent for all status values of the SeaTalk1 autopilot. This functionality is controlled by a setting off the Autopilot Settings menu.
navCenter dynamically determines the source/target address of the SeaTalkNG Autopilot. The Autopilot Settings menu displays the autopilot's source address.
A New View called "N2K" under "Environment" Group also displays the detected autopilot's source address.
A bespoke Alert is now used to offer the ability to Confirm or Cancel a SeaTalkNG Autopilot's change to Track mode.
Data ageing is now accurate to a few milliseconds and thus the Watch is now able to indicate when data it displays is older that the time limit set in navCenter's Settings. When NMEA data is marked aged only the individual value is shaded. 3.1.5 05/06/2024 Version 3.1.4 ensures that the bytes making up a binary numeric value represented by N2K format $MXPGN are in the required order. All other N2K formats are unaffected by this change. 3.1.4 03/10/2024 Logging of autoPilot control actions (.pilot) updated to include $PSMDST sentence. 3.1.3 02/28/2024 nC is now able to read N2K messages in $PCDIN format.
nC offers supports for a new device, N2K0183, from Vela-Navega. N2K0183 is an NMEA 0183 - 2000 Bridge and WiFi Gateway.combined. N2K0183 supports a range of formats and an Evolution AutoPilot can be controlled by nC when using N2K0183 set to "N2K ASCII format".
Logging of autoPilot control actions (.pilot) improved. 3.1.2 02/27/2024 A facility has been introduced to allow incoming NMEA0183 data to be recorded to a log. These logs may then be transmitted via eMail for later analyses.
The User Interface for the Pilot Remote has been updated to give an improved user experience when confirming a large heading change for SeaTalkNG pilots.
Pilot settings are now accessed via a dedicated Menu button alongside the Pilot information bar. 3.1.1 01/15/2024 navCenter's Pilot View is now able to remotely control both Raymarine SeaTalkNG™ and SeaTalk1™ autopilots(SeaTalk1 was originally known as SeaTalk). 3.1.0 11/10/2023 App description updated to provide more information on the current and planned functionality of the autopilot remote control. 3.0.5 07/24/2023 Corrected an error in simulation files which was preventing users from properly evaluating the app
GPS data can now be read from the ships instruments or from the Device itself; choice is made in Settings.
COG from Apple Device or vessel's instruments may be displayed as m/s, k/h or knots
Console View can now send its contents via eMail
A new Input Data Summary View is available to provide a summary of Sentences / PGNs received. The Data Summary View is also able send its contents via eMail 3.0.4 07/12/2023 3.0.3 Includes:
New views to display:
Wind Magnetic, Wind True
WindWater (i.e. Wind with reference to the water - sometimes referred to as the "True wind")
WindGround (Wind with reference to the ground.
Data selection when setting up the Watch displays is now also split into Groups. 3.0.3 06/26/2023 3.0.1 Updates include:
A View may be loaded on app launch to prompt new users on how to link navCenter to their boat if they have purchased or subscribed to navCenter but are still using a simulation file.
Data Views are now grouped to simplify and speed up the process of selecting a new View.
NMEA 2000 support extended to include format !PDGY
User data is automatically converted from version 2 or version 3.0.0 to 3.0.1 on install 3.0.2 06/23/2023 3.0.1 Updates
New View loaded on app launch to prompt new users on how to link navCenter to their boat once they have purchase or subscribed but are still using a simulation file.
Data Views are split into groups to simplify choosing a new View
Support included for NMEA 2000 format !PDGY
User data is automatically converted from version 2 or version 3.0.0 to 3.0.1 on install 3.0.1 06/22/2023 Version 3.0.0 Includes:
- support for NMEA200 using the following input formats, "Yacht Devices RAW", NMEA 0183 Sentence MXPGN and "Actisense ASCII"
- A View "Console" which displays the last 50 messages sent to navCenter's internal console
- conversion code to carry forward any customised Views and settings from the previous version 2.4.1 3.0.0 06/16/2023
navCenter version 4.2.0
Updated At: 2025-11-09
Changes: navCenter now supports AIS input via NMEA2000 and SeaTalkNG formats as well as NMEA0183
Users able to enter their own boat's MMSI so that any AIS records for their own boat are ignored for CPA processing.
The CPA (Closest Point of Approach) at which a vessel of Type A or B is considered to be dangerous is now user definable.
AIS Range now begins at 0.125 NM and all AIS Reports are enhanced to show greater detail.
navCenter version 4.0.2
Updated At: 2025-09-08
Changes: Sep 8, 2025
Version 4.0.2
When the AIS View cannot calculate CPA because of missing information it now displays a View listing what information is missing. More detail will be added to this View over time.
navCenter version 3.2.1
Updated At: 2024-12-06
Changes: Dec 6, 2024
Version 3.2.1
Extends iConnect to enable devices running MacOS (Mac or MacBook) to act as an iConnect Client or Server.
Corrects bug preventing Location Services from operating correctly.
navCenter version 3.2.0
Updated At: 2024-11-12
Changes: Nov 12, 2024
Version 3.2.0
3.2.0
Copies of navCenter running on different devices are now able to share both instrument data and control of a vessel's autopilot.
navCenter running on an Apple Watch is no longer restricted to its paired iPhone; a Watch can now access both instrument data and control of a vessel's autopilot by connecting to navCenter running on any iPad or iPhone.
More information can be found here: https://www.guardiandigital.tech/navCenterIConnect.html
navCenter version 3.1.10
Updated At: 2024-09-03
Changes: Sep 3, 2024
Version 3.1.10
Corrected an error in the logging system.
navCenter version 3.1.9
Updated At: 2024-08-27
Changes: Aug 27, 2024
Version 3.1.9
3.1.9
Apple Watch is now able to display a boats current data and control the autoPilot while navCenter is running in background mode on the iPhone.
This means that the Apple Watch is able display your boat's current data and control the autopilot while the paired iPhone is being used to check eMails, make a phone call etc.
Running an app in Background is at the discretion of iOS. So if your iPhone battery is less than 20% or your phone is very busy running a foreground app iOS may occasionally decide not to allow navCenter to run in the Background.
For NMEA 0183 check digits can now be processed as
required - they must be present and correct (Default)
optional - if present they must be correct
ignored - check digits may or not be present but they will be ignored.
navCenter version 3.1.8
Updated At: 2024-07-23
Changes: Jul 23, 2024
Version 3.1.8
navCenter's autoPilot remote control is able to initiate an AutoTack when in Wind mode.
WindGauge contains a button bottom right of screen to cycle through Apparent, True and Ground Wind.
Apple Watch can use the Crown to browse sequentially through data views.
Temperatures may be displayed in Kelvin, Centigrade or Fahrenheit
navCenter version 3.1.7
Updated At: 2024-07-04
Changes: Jul 4, 2024
Version 3.1.7
The following NMEA values are calculated and can be found under "Computed Values":
VMC (Velocity made good on course to waypoint; View "VMC nC"
WCV (Waypoint Closing Velocity); View "WCV nC"
Noe that both of the above display the same data value; they just have different names. 'VMC' is in common use while 'WCV' is the NMEA standard name.
True Wind Speed and True Wind Angle (Wind over the water); View "Wind True nC"
Ground Wind Speed and Angle; View "Wind Ground nC"
VMG (Velocity made good to or from (value preceded with a minus '-') the True wind); View "VMG nC | VMG nC Summary"
TCP Host address may be specified as a Hostname or IP Address.
navCenter version 3.1.6
Updated At: 2024-05-25
Changes: May 25, 2024
Version 3.1.6
Corrected internal byte order for format MXPGN for all Heading and Wind datum changes
Technical changes to prepare navCenter for introduction of Apple's Swift version 6.
Disclaimer
Official App Store Link
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