... To be found again as a person who has fallen overboard, a MOB (Man Overboard Beacon) or PLB (Personal Locater Beacon) can be used. The MOB alerts via AIS and DSC in close range, the PLB uses the worldwide available COSPAS/SARSAT system. State-of-the-art PLBs combine these technologies in one device. In an emergency, the ship is alerted via a SART (Search and Rescue Radar Transponder) or an AIS-SART (Search and Rescue Radar Transmitter) at close range and at long range via an EPIRB (Emergency Position Indicating Beacon). Again, equipment is available that uses multiple alerting paths simultaneously. While vessels are required to carry certain emergency transmitters, more and more recreational crews are also increasing their safety by doing so.