Question 1

How do I display my phone's GPS data?

Henri · Accepted Answer

Display GPS data from your phone

While sailing, if you want to display your phone’s GPS data, open the app settings (gear icon in the top-right corner).

Go to the GPS & NMEA menu and make sure the GPS source is set to Internal.

Exit this menu, then open Instruments. Check the Visible box to show the instruments, and make sure the selected layout is GPS View.

Once your phone receives a GPS signal, the time of the last position, your speed over ground (SOG), and your course over ground (COG) will be displayed in the instrument bar.
You can scroll through the parameters to view your coordinates and POI data if you’ve selected a waypoint using the Go to function.

On phones, the default display is horizontal.

On tablets or computers, the layout automatically adjusts to a vertical view.

Question 2

How do I display my phone's GPS data?

Henri · Accepted Answer

Display GPS data from your phone

While sailing, if you want to display your phone’s GPS data, open the app settings (gear icon in the top-right corner).

Go to the GPS & NMEA menu and make sure the GPS source is set to Internal.

Exit this menu, then open Instruments. Check the Visible box to show the instruments, and make sure the selected layout is GPS View.

Once your phone receives a GPS signal, the time of the last position, your speed over ground (SOG), and your course over ground (COG) will be displayed in the instrument bar.
You can scroll through the parameters to view your coordinates and POI data if you’ve selected a waypoint using the Go to function.

On phones, the default display is horizontal.

On tablets or computers, the layout automatically adjusts to a vertical view.

Question 3

How to easily create your boat's polar ?

Henri · Accepted Answer

iPolar lets you create a polar in one minute based on your boat’s characteristics:

Go to the “My Boat” tab, then tap the selected Polar.
Select the “iPolar” tab, then click “Create”.
Enter the required information:
- Polar name
- Overall length
- Displacement
- Main sail area
- Jib area
Optional information:
- Waterline length
- Symmetrical spinnaker area
- Asymmetrical spinnaker area
Choose your parameters:
- Sailing style: Cruising or Racing
- Polar type: Routing or Performance
- (For most users: Cruising + Routing)
Click “Calculate my polar”.
Select your newly created polar.

Note: The iPolar method was developed by KND, experts who work with the America’s Cup, TP52s, and IMOCAs — the best in their field!

Question 4

How to Display AIS Targets?

Henri · Accepted Answer

Prerequisite: make sure your NMEA stream is properly configured and that you are receiving AIS sentences (they start with AIVDM).

Enable AIS target display

Open the Settings panel (gear icon, top right).
Choose AIS.
Enable Show AIS targets.

Display settings

Name & speed: show/hide target name and speed (global setting).
Tip: turn off near the coast when many targets are visible; turn on offshore when few targets are visible.
Remove lost targets after: time before a target disappears without a received sentence (e.g., 15 min). The target fades out: 100% visibility after a recent sentence down to 0% at the timeout.
COG vector length: course-over-ground vector length, from 0 to 60 minutes.
Show target track: global option to display tracks for selected targets or for all targets.
Tip: “selected” near the coast (many targets), “all” offshore (few targets).
Track length: Tip: short near the coast (busy areas), long offshore (few targets).

Proximity alarms

CPA (Closest Point of Approach): minimum distance at closest approach.
TCPA (Time to CPA): time remaining until CPA.
Triggering: the alarm triggers when both conditions (CPA and TCPA) are met.
CPA lines: option to show/hide CPA lines on the chart.

Hide Class B AIS targets

You can hide Class B AIS targets (small recreational boats) to show only Class A (cargo, ferries, etc.)—useful at crowded race starts.

Map interactions

Icons: green by default. Chevron for Class B, triangle for Class A. Targets in alarm are red.
Short tap/click on a target: select it and show its track, name (or MMSI if unknown), and average speed over 5 and 20 minutes.
Long press: detailed panel with:
- MMSI and Name
- Navigation status: at anchor, restricted maneuverability, fishing, …
- Position: latitude & longitude
- SOG: instant speed over ground; averages over 5 and 20 minutes
- HDG: heading
- RNG/BRG: range and bearing
- CPA/TCPA
- Crossing: ahead of/behind the target (very useful underway)
- Position age
- Static info if available: callsign, type, length, beam, destination

AIS target list

Open the hamburger menu (☰ top left) and choose the AIS tab to display the target list.

For each AIS vessel, the following information is available:

MMSI and vessel name
Instant speed
Speed over ground (5 min)
Speed over ground (20 min)
Heading (COG/HDG)
Range to the vessel
Bearing
CPA – Closest Point of Approach
TCPA – Time to Closest Point of Approach
At the left of each row, a small color rectangle shows the target state: green if normal, red if an alarm is active.

Sort and filter the AIS target list

To quickly find a vessel, you can sort and filter the AIS target list.

Sort by:
- MMSI
- Name
- CPA and TCPA
- Range
- Instant speed
- 5-min speed, 20-min speed (popular in racing to monitor competitors)
Filter by:
- Name (e.g., type “CHA” to find “Cœur de Chauffe”, “Alyocha”, etc.)
- Class: type A (Class A) or B (Class B)
- Status: type “Alarme” or “Alarm” to show only targets with a collision alarm
Click/Tap a vessel:
- the map recenters on the vessel and the target is automatically selected.

How do I display my phone’s GPS data?

How do I display my phone’s GPS data?

Display GPS data from your phone

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How do I display my phone’s GPS data?

How do I display my phone’s GPS data?

Display GPS data from your phone

Related Posts

How to easily create your boat’s polar ?

How to Display AIS Targets?

How do I download maps for offline use?

How do I navigate towards a POI or Waypoint?

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