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Automatic Identification System

Automatic Identification System. AIS Technology.

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Automatic Identification System

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  1. AutomaticIdentification System

  2. AIS Technology The Automatic Identification System is designed for autonomous information exchange between ship&ship and ship&shore-based station. This information includes ships’ name, location, speed and course over ground. Transas’ transponders also have a function which allows operator to send binary and text messages from ship to ship, from ship to shore and v.v. The exchange of information is realized through two VHF channels. The transponders are working in broadcast mode on shared channels, thus all transponder equipped vessels can see each other. This exchange of information is performed fully autonomously (without any involvement from a controlling station). The broadcast data is received both by transponder’ equipped vessels and shore based transponders. STDMA Datalink

  3. AIS Technology The transponders offered by Transas Marine include functionality in accordance with the Technical Characteristics for a Universal Shipborne Automatic Identification System, approved by ITU (ITU-R M.1371). This means communication over two parallel VHF channels, operation at the designated AIS 1 and AIS 2 channels and radio transceiver approval in accordance with I-ETS 300 113.

  4. The following information is available for automatic display in the VTS and on vessels ECS: Position Name Call sign Length and beam Type of ship Location of GPS antenna Speed over ground Course over ground Heading Rate of turn On Board Transponder By installing a Universal AIS transponder on a ship together with ECS or ECDIS system and other sensors, surrounding ships equipped with a similar Universal AIS transponder can be monitored in real time. The available voyage related information includes: Destination Estimated Time of Arrival Ship’s draught Type of cargo

  5. Navi-Harbour AIS Display

  6. Base Station Transponder (SBT1000 Transponder) The base station transponder is a standard 19” rack module that includes a standard mobile transponder, power supply converter and DGPS reference station/beacon receiver. With an installed reference station/beacon receiver the base station transponder can broadcast different corrections to transponders operating within VHF range. This transponder is designed for land installations, both for stand-alone units and network configurations.


  8. Advantages Of Using AIS - cost-effective solution; - suitable for small ports; - IMO compliant; - easy to install; - compact design; - could be expanded up to full range VTMS; - easy to upgrade;

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