Ocean Signal MOB1 AIS beacon

Introducing the world’s smallest AIS MOB device with integrated DSC.  The rescueME MOB1 from Ocean Signal.

Free professional fitting to your lifejacket when purchased from us.

Free programming of your MMSI number.

The MOB1 is compatible with even the most compact inflatable life-jackets.

The MOB1 is intended to be installed within the life-jacket and will activate automatically on inflation, sending the first alert within 15 seconds.

The integrated strobe light ensures maximum visibility in low light conditions. The MOB1 communicates with the vessel you have been separated from and other vessels in the vicinity (up to 5 miles range dependent on conditions).

In an emergency rescueME MOB1 provides 2 methods of rapidly communicating your position, accurate to a few metres, back to the vessel, plus providing visual indication via its built in strobe light.

The best chance of rapid rescue if you fall overboard comes from your own vessel. Your crew needs to be immediately aware of the incident and keep track of your position whilst recovery is carried out. Even in the most moderate of seas it is alarming how quickly a visual sighting of a man overboard can be lost.

  • The AIS unit is designed to be activated automatically upon inflation of your lifejacket.
  •  Once the AIS unit has been activated an alert signal is raised within the locality,
    which is receivable by onboard AIS enabled devices; for example your own onboard chart plotter.
    It will alert your boat or those within a 5 mile range.
  • AIS technology is the most precise way of locating a MOB currently in existence.
  • Your best chance of survival is from your own boat.
  • The Ocean Signal MOB1 is also fitted with a GPS transponder, which transmits
    GPS coordinates, giving your crew your range and bearing to your precise location.
  • This unit WILL NOT alert rescue services.

    A lifejacket fitted with AIS is fully transportable onto other boats, as no registry is required. You can be assured whilst sailing on a friend’s yacht, that you have your personal safety system with you.

Most modern AIS plotters and DSC VHF comply with the standards required to receive MOB transmissions. It is however, especially if you are using older equipment, recommended that you check compatibility with the equipment manufacturer.

Ocean Signal recommends using one of the radios from the list below with the rescueME MOB1. The following class D DSC radios have been tested in cooperation with the manufacturer and confirmed to receive the Individual Distress Relay call.

Current models; M91, M323, M423, M506
Older models; M411, M421, M505, M603

Simrad: RS90

Standard Horizon: The factory has confirmed the following models are compatible:

V4.xx (GX5500S only),

V5.xx (ALL)
V4.xx (GX2150/GX2000 only)
V1.xx (GX2200 only)

V4.xx (ALL)
V2.xx (ALL)

V2.xx (ALL)
V1.xx (ALL)

V1.xx (ALL)

Class A DSC radios have always been able to receive this call and all models are believed to be compatible.


D 27mm x W 38mm x L 134mm.

Weight : 92gms

AIS transmit power1 Watt
DSC Transmission Transmit Power 0.5Watt
Temperature range (operational)-20°C – +55°C
Temperature range (storage) -30°C – +70°C
Battery7 years life
Waterproof 10m depth
StandardsRTCM SC11901, EN303 098-1