3 Capability
3.1 The AIS should comprise:
.1 a communication processor, capable of operating over a range of maritime frequencies, with an appropriate channel selecting and switching method, in support of both short and long range applications;
.2 a means of processing data from an electronic position-fixing system which provides a resolution of one ten thousandth of a minute of arc and uses the WGS-84 datum.;
.3 a means to automatically input data from other sensors meeting the provisions as specified in paragraph 6.2;
.4 a means to input and retrieve data manually;
.5 a means of error checking the transmitted and received data; and
.6 built in test equipment (BITE).
3.2 The AIS should be capable of:
.1 providing information automatically and continuously to a competent authority and other ships, without involvement of ship's personnel;
.2 receiving and processing information from other sources, including that from a competent authority and from other ships;
.3 responding to high priority and safety related calls with a minimum of delay; and
.4 providing positional and manoeuvring information at a data rate adequate to facilitate accurate tracking by a competent authority and other ships.
4 User interface
To enable a user to access, select and display the information on a separate system, the AIS should be provided with an interface conforming to an appropriate international marine interface standard.
5 Identification
For the purpose of ship and message identification, the appropriate Maritime Mobile Service Identity (MMSI) number should be used.
