iVMS ATX Solution

iVMS (inshore vessel monitoring) is a generic term for a VMS vessel tracking and monitoring solution using inexpensive 3G/GSM/GPRS networks rather than global satellite.

Typically used to monitor smaller fishing vessels under 12 meters working inshore for the management of MPA (Marine Protected Areas), closed areas and inshore fisheries.


Our iVMS ATX series of terminals is tried and tested in the fisheries sector with the following main features:

  • Utilising a "global 3G SIM" which means accessing multiple global cellular networks with one SIM for maximum coverage without expensive roaming fees.
  • Robust casing and waterproof - IP67
  • Dual Mode of operation- When the iVMS has external power the internal batteries will be charged and it will operate in real-time sending GPS position reports. When external power is removed it will automatically switch to the preconfigured sleep mode on the internal battery reporting external power has been removed. Extremely low power consumption achieved by innovative battery management to preserve battery life.
  • Geofence mode of operation - the unit can change the frequency of transmitting GPS when entering a pre-configured geofence.  With every GPS message, the device sends the battery level it currently operates on and current temperature inside the unit.
  • Vibration sensor – for automatic security and motion detection.
  • Movement Detection – the unit detects when the vessel is moving.
  • Store and forward – the small and easy to install terminal can store up to 10,000 events when out of GPRS coverage then send them automatically when back in GPRS coverage. 
  • LED Indicator light - installed in wheel house to indicate correct operation.

Technical Specifications:

  • Network availability – GSM/GPRS or Edge/HSPA+(3G)
  • Frequency Bands - Quad-Band (European 900/1800/2100, American 850/1900/2100)
  • Enclosure ABSPC water proof IP67 enclosure, rated UL94V-0
  • GPS – MTK 66 Channels
  • Dimensions: 7.3” x 2.8” x 1.6” (185mm x 73mm x 41mm) without solar panel and bracket
  • Weight: 9oz (255gr) without the batteries

Environmental Specifications:

  • Operating Temperature: -4°F to 140°F (-20° to 60°C)
  • Storage Temperature: -22°F to 158°F (-30° to 70°C)
  • Charge temperature: 32°F to 113°F (0° to 45°C)
  • Humidity: 0 to 99% 110F (40C), non-condensing
  • Shock/Vibration/Mechanical: meets or exceeds EIA standard RS-316B 3G (operating), 20G (non operating) XYZ 3 directions. Meets SAE J1455.

Power source options:

Operated by Rechargeable battery - the standard is one 4.2 VDC Lithium reparable battery pack with a capacity of 7800mA. When fully charged has the capacity of transmitting around 4000 GPS position. Optionally a second battery pack can be added with same capacity for transmitting a total of around 8000 GPS positions. The unit has an internal fast charger. The batteries are charged via an external of the shelf standard 6-24VDC regulated power supply wall powered (110-220 AC) that plugs into the unit via a waterproof connector. Optionally the unit can be charged from a car battery via the cigarette plug. The charge time is around 4-5 for one battery pack. Solar Power option the unit configuration remains as described above with a rechargeable battery or two battery packs, the solar panel will charge the lithium batteries at 200Mamp in full sun. On a summer sunny day the solar panel will charge the batteries with power the equivalent to around 20 GPS transmissions.

Electrical Specifications:

Current consumption from battery:

  • Standby mode: 40ma at 3V
  • Sleep mode: 45uA at 3V
  • Transmit mode: 1.8A pulse at 3V

Functional Specifications

Digital inputs - optional up to two dry contact IO one input can make event on open loop detection that wakes up the unit and send an alarm

Up to 6 external digital temperature sensors (optional)

Vibration sensor - for automatic security theft alarm and motion detection

Over the Air (OTA) configuration via SMS

Highly compressed OTA, UDP communication packaged with MidLink Middleware and “Plug & Play“ API or DLL for quick integration into any third party software, recommended for dot.NET platforms

Or direct TCP/IP communication OTA - (no Middleware) packaged with “Plug & Play“ API or DLL for quick integration into any third party software, recommended for Unix and/or Linux platforms

OTA Diagnostic

USB port for firmware download and configuration

Analog Input

  • USB port powers the unit during configuration and testing
  • Firmware download and configuration via USB
  • Integrated internal analog temperature sensor sends unit temperature with every GPS data transmission
  • High location accuracy achieved with integrated 66 channel MTK GPS technology
  • Optional external GPS and /or cellular antenna
  • Sends battery level with every GPS data
  • Store and forward- the unit can store up to 10,000 events when out of GPRS coverage and then send them automatically when back in GPRS coverage
  • Sends Cell based locations in addition to GPS

IRIS Mapping Application

AST also provide IRIS, a secure mapping platform that has been developed to receive and display in real time the received vessel positional data.

IRIS provides real time vessel monitoring, reports, polling, geo-fencing, the ability to change reporting frequencies as well as course history with remote access if required.


IRIS showing a geo-fence zone where change of reporting can be triggered if a vessel enters or leaves: