WilhelmSK is a highly customizable boat instrument display that uses the SignalK protocol ( to show information from your boat's sensors.

Please note that you must have special hardware and software on your boat for the application to work. You need a SignalK server or gateway or something that provides NMEA 0183 over TCP. See the website for more information.

Supported Connections:
- SignalK REST api or Streaming
- iKommunicate REST api or Streaming
- NMEA 0184 over TCP

Connection Configuration:
- Manual configuration of ip/hostname and port
- SignalK discovery via Bonjour
- iKommunicate discovery via Bonjour

RayMarine Auto Pilot Support *
º View or change current mode (Standby, Auto, Wind, Track)
º View current target heading or Wind direction
º Change target heading or Wind direction

Alarms and Notifications
º View list of current current alarms
º Acknowledge RayMarine "Turn To Waypoint' *
º Push notification support *
º Setup server side alarms *
º Set an anchor alarm with the push of a button *

Navionics Maps
If you already have the Navionics Boating application with an active subscription, you can now use the same Navionics charts in WilhelmSK. Ensure you are a registered user with Navionics and have a Username and Password. If you have not registered, go to the Navionics Boating App’s Main Menu, click on the top “Me” option and then click Login. In WilhelmSK click the login button on the bottom right of the map and enter your Navionics login information.

- Raymarine MFD: display and interact with a RayMarine MFD (discovered via Bonjour)
- Fusion stereo (control zone volumes, source input, play, pause etc.)
- Create a gauge for any value available via SignalK
- Sophisticated anchor alarm (requires node server and signalk-anchoralarm-plugin)

- Customize gauge display using SignalK meta.zones
- Customize gauge range, min/max, etc.
- Save custom gauges to node server or the cloud for use on other devices
- Wind Angle gauges can optionaly be rotated so that they always point ot the bow of the boat, regaurless of device positioning
- Place gauges by long pressing on a gauge and choosing a differnt one
- Make a gauge full screen by double tapping
- Multiple layout support. Create a differnt layout for Steaming, Sailing, Home Monitoring, etc.
- Customize the nuber of pages and their layout
- Manuall connection configuration synced accross devices via iCloud
- Automatic connection selection based on current ip (usefull when Bonjour is not available and you have multiple boats)
- Two themes, dark and light
- Animated gauge needles
- iPad Slideover and Split View support (Your gauge configuration can be customized for these views)
- Connections can be configured to be refreshed manually or at a specific time interval
- Design your own custom gauge templates
- Share your custom templates via Air Drop, eMail, Text, etc.
- Edit ApplyTV or other device layouts and templates remotely using your iPhone or iPad
- Most gauges can be configured to be digital or analog
- Enter the SignalK path and title for any gauge to show data not supported by default
- Displays AIS targets in the Map views
- Configure node server plugins inside of the app

* Autopilot control, server side alarms, push notifications and fusion stereo control require signalk-server-node and my plugins installed. Setup Instructions at

What's New

Version 1.7.1

Now with Active Captain support!
You can view Active Captain Points of Interest and review or comment on them.

Go to Settings->Appearance to show Active Captain Points of Interest on the maps.

Bug Fixes and Enhancements:
* Fixed issue with not getting data from iKommunicate and some older versions of node server
* Fixed keyboard covering up text fields in the Boat settings
* fixed issues reconnecting after a server restart
* Fixed issue with connecting getting in a loop when the request for the full tree times out
* Fixed controls on a small map view enrcoaching on other gauges
* Fixed fuel econmonmy bar graph not showing correct units with v/d
* Fixed showing notifications from other boats in the cloud
* Navionics: Double taps on zoom buttons don't maximize the view any more
* Navionics: Touch and hold on buttons for continuous zoom in or out
* Fixed issue showing notifications from other boats in the cloud
* Added zoom buttons to Google Maps
* Now remembers sort order on AIS targets between sessions
* Fixed columns on AIS Targets view to use the whole screen
* AIS Targets view: added info button
* AIS Targets view: show only name when the view is small
* AIS Targets view: show Aids to Navigation
* Added option to prevent the screen from locking
* Fixed watch app not showing any data

Ratings and Reviews



I don't know why more sailors are not finding out about this app.... but they need to.
Combined with a VERY inexpensive/low power Raspberry Pi or iKommunicate, anything and everything that transmits NMEA data can be displayed on your iPhone, iPad, iWatch and even an Apple TV.
You can even receive your ships data anywhere on the planet via an internet connection.

The support is excellent. The engineer implemented AIS and walked me through how it works.
No need to buy an AIS that has WIFI.


Scott Bender
127.2 MB
Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch. Apple TV.
Age Rating
Rated 4+
© 2018 Scott Bender. All Rights Reserved


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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