Both receivers are linked to the computer system which has terminals in key locations throughout the ship. Other electronic devices for navigation include a Doppler speed log and two fathometers. The complement of more traditional navigation tools includes anemometers, magnetic compass, sextants, chronometers, azimuth circles, telescopic alidade, binoculars, a range of navigational publications and charts and search lights. Some specific items are described in greater detail elsewhere in this section. Radar consoles on the bridge have large viewing area, daylight displays and International Maritime Satellite, or Inmarsat, is the primary satellite communications system on board.
Coverage is nearly worldwide.
The system, as installed on Melville , can be used for voice, data and facsimile communications and the quality is generally excellent. Through a linkage with the shipboard computer network, it is possible to send and receive e-mail via Inmarsat. This is the preferred method for sending lengthy data or text files. Upon supplying billing information, the ship's computer technician will provide individuals with a personal account on the ship's computer system. Users will be recharged at a later date in proportion to the volume of data they transferred via Inmarsat.