Chapter 1: Introduction
The Inmarsat C services 11
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Message transmission
Ship to shore: Text and data from the SAILOR 3027 can be sent to:
• An e-mail address
• Any telex or fax (text, one way only) number
• Any computer connected to the public telephone and data networks
(PSTN and PSDN), using a telephone modem number
• Another Inmarsat C / mini-C terminal
• A Short (or Special) Access Code (SAC).
The maximum message size is 10 kb for the SAILOR 3027.
Shore to ship: Text and data can be sent via telex, e-mail and the data and
telephone (PSDN / PSTN) networks. To be able to send messages to ships, a
shore-based message originator needs to be registered (to have a
commercial service agreement) with an Inmarsat C service provider of their
choice.
Ship to ship: Messages can also be sent in a ship-to-ship direction from
one mini-C terminal to another.
Position reports
The SAILOR 3027 is integrated with a Global Navigational Satellite System
(GNSS) receiver to provide highly reliable, round-the-clock position
information of the ship, which can be used for position reporting.
The position reporting service is based on using the data reporting and
polling protocol and allows a shore-based subscriber (base station or
shipping company) to request position information from a vessel, as a
single report or automatic reception at fixed intervals, e.g. every six hours.
The SAILOR 3027 can also be programmed to send regular position reports
to any desired destination.
The position report includes ship's identity, latitude, longitude, course,
speed, date / time of the position report and time of the last position
update.
With the SAILOR 3027, the report is sent to a DNID (Data Network
IDentifier) that is effectively a mailbox created on some LESes. The SAILOR
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