Now with a unique feature, set the geofence as a sector! Just double tap on the circle where you want open up, adjust to the right shape. If the boat drags outside the user defined area an alarm will go off. No need to have your device in hand when you cast the anchor, adjust the anchor position easily in SafeAnchor at a later time and set the alarm. When you would like to disable the alarm, just open the app and tap on 'disarm', now you can leave the app and the blue ribbon will also disappear a second later.SafeAnchor uses the built in GPS receiver on your device to monitor your boats position. Now you can leave the app, a blue ribbon on top shows you the location service (and also anchor alarm) is still active. if you would like to have the volume not on the highest level, you can disable volume obervation). You can disable each cause if you do not like the app to observe it (e.g. Which cause is the reason for the alarm is visible with the red highlighted text. Headset > Is no headset connected that could avoid a alarm ring on the iPhone speaker? Volume > Is the iPhone volume on the highest value? GPS accuracy > is the GPS signal good enough? When you are done hit ' has the battery enough power? You will see later when you turn your iOS device, the vessel sketch on the map turns around this point.

Finally you can position your location on the vessel to show the finally correct position on the map. Tap on the vessel icon on top right and enter your dimensions either in meter or foot. To show your ship in the map true to scale, you can enter the dimensions of your vessel.

Finally choose your favorite map style, I persoanly prefer in most cases the sattelite view. The rings in the center map view show you the scale. Tap the map icon on top left and first define the zoom level to your needs. Open 'Anchor Alarm - A anchor watch for sailor and yachtsman' and wait for a sufficient GPS fix. This is possible without app in besst seamanship. The handling is really not complicated, and descibed in this document step by step. The idea behind 'Anchor Alarm - A anchor watch for sailor and yachtsman' is to have the easiest and best app available for this use case.

Anchor watch app