A Signal K webapp plugin to calculate and display real-time interception solutions for AIS targets.
- Real-time Calculations: Displays the required course, time, and distance to intercept a moving AIS target based on your vessel's current speed (SOG).
- Multiple Scenarios: Calculates three different approach scenarios:
- Slow Approach: The absolute minimum speed required for an intercept.
- Cruise Approach: The solution based on your configured cruising speed.
- Max Approach: The solution based on your configured maximum speed.
- Target Selector: Provides a sortable list of all nearby AIS targets to easily select and switch between them.
- Clear Dashboard: Shows your vessel's key data (Position, SOG, COG) and the primary interception solution in a clean, easy-to-read format.
- Movement Simulation: Includes a simple simulation mode to test the plugin's functionality without being underway.
- Navigate to the Appstore in your Signal K admin interface.
- Search for
signalk-ais-interceptor. - Click Install.
- Activate the plugin and restart the Signal K server when prompted.
After installation, you need to configure the plugin with your vessel's performance data.
- In the Signal K admin interface, go to Server -> Plugin Config.
- Find AIS Interceptor in the list and expand it.
- Enter your vessel's cruising and maximum speeds.
- Cruising Speed: Set this to your vessel's typical, comfortable, or most fuel-efficient cruising speed (in knots). This value is used to calculate the "Cruise approach" scenario, showing you the interception solution if you travel at your normal speed.
- Max Speed: Set this to the maximum sustainable speed of your vessel (in knots). This value is used to calculate the "Max approach" scenario, showing you the fastest possible interception solution.
- Click Submit and restart the server when prompted to apply the changes.
Once installed and configured, you can access the dashboard from the Webapps section of your Signal K server.
- Select a Target: Click the "Select an AIS Target" button. A modal window will appear with a list of all AIS targets currently visible to your Signal K server. You can sort the table by clicking on the column headers. Click on a vessel to select it as your target.
- Analyze the Data:
- The main display boxes (Intercept Course, Time to Intercept, etc.) show the primary solution based on your vessel's current Speed Over Ground (SOG).
- The colored text below provides the three pre-calculated scenarios, which are extremely useful for planning:
- Slow approach: Shows the minimum SOG you must maintain to eventually intercept the target.
- Cruise approach: Shows the course and time to intercept if you travel at your configured Cruising Speed.
- Max approach: Shows the course and time to intercept if you travel at your configured Max Speed.
ISC