After the alarm is confirmed, the user is visually guided first to the point of loss and later to the MOB. We
have developed an intuitive MOB compass that visually guides the user during rescue while requiring zero
The rescuing vessel is shown at the center of the compass while an MOB icon represents the direction to
the MOB’s point of loss. The user steers the rescue course shown on the screen until the icon is right in
front of the on screen vessel image. The icon turns green and gets bigger as you make the approach.
There’s no map reading involved; it’s simple and intuitive.
Once the rescuing vessel gets close to the point of loss, the system initiates a homing feature, similar to
what a rescue helicopters would use. A continuously updating search perimeter is drawn around the point
of loss, based on the amount of time that has passed to account for drift caused by current and wind.
While in the water the beacon will rapidly emit an emergency signal.
Because of Bluetooth’s poor performance in water, the phone will only receive this signal when it is in close
proximity to the beacon. Once received, the app will notify the user and advise the user to try to
establish vocal and visual contact with the MOB.