To start an Open Water swim on Apple Watch, simply tap Open Water on the main menu. The experience will be similar to Pool Swim mode, but a map will be added to your workout in Apple's Activity app.
Open Water tracking is most accurate when location services are enabled for MySwimPro. There are two places to check that these permission are enabled:
- In the MySwimPro app, under Devices, Applications, and Services settings, make sure Open Water Location services is turned on. If the switch is greyed out, you'll have to check for location services settings in your iPhone's Settings app.
- Open the Settings app, find MySwimPro, and check that Location Services access is set to While Using.