AIS MOP FastFind Crew1 (AIS Man Overboard Beacon)
Silahkan Diorder
Man Overboard devices provide immediate notification to the parent or neighbouring vessels relating to a Man Overboard (MOB) incident and provide a means of location to determine the position of the MOB. Finding a MOB in the water and navigating your vessel to their location can be difficult, particularly at night or in strong tides. A survivor recovery system which uses AIS, to contact the crew member’s vessel, greatly increases the chances of identifying the MOB’s location and aiding recovery via locally orchestrated rescue. For this reason, we have also created an EPIRB with AIS and an AIS SART.
The AIS MOB device provides real time positioning to support localised rescue by using the Automatic Identification System, an electronic navigation system established originally as a collision avoidance and safety system for commercial vessels.
Once activated the position of the AIS MOB device such as the FastFind CREW1, will be displayed as a GPS located target icon on ships in the vicinity with AIS enabled plotter screens. They do this by repeatedly transmitting an AIS message type MSG1 (class A position report) and MSG 14 (safety broadcast message) alternating quickly between both AIS channels AIS1 and AIS2.
A burst of 8 MSG1 messages repeat every 1 minute, with the cycle of messaging repeated many times to overcome wave action and to achieve line-of-sight to a nearby vessel. In a heavy sea with the AIS device close to the sea surface, wave swell can block the transmissions. This is overcome via information being repeated every 2 seconds (over 14 seconds), ensuring some transmissions will coincide with the survivor being on a wave crest, allowing “line-of–site” path for message relay. The vessel will get a range and bearing to the exact location, which is updated, in real time to recover the drifting MOB.
The AIS MOB device provides real time positioning to support localised rescue by using the Automatic Identification System, an electronic navigation system established originally as a collision avoidance and safety system for commercial vessels.
Once activated the position of the AIS MOB device such as the FastFind CREW1, will be displayed as a GPS located target icon on ships in the vicinity with AIS enabled plotter screens. They do this by repeatedly transmitting an AIS message type MSG1 (class A position report) and MSG 14 (safety broadcast message) alternating quickly between both AIS channels AIS1 and AIS2.
A burst of 8 MSG1 messages repeat every 1 minute, with the cycle of messaging repeated many times to overcome wave action and to achieve line-of-sight to a nearby vessel. In a heavy sea with the AIS device close to the sea surface, wave swell can block the transmissions. This is overcome via information being repeated every 2 seconds (over 14 seconds), ensuring some transmissions will coincide with the survivor being on a wave crest, allowing “line-of–site” path for message relay. The vessel will get a range and bearing to the exact location, which is updated, in real time to recover the drifting MOB.