Inmarsat
Fleet range of services provides enhanced flexibility to meet
the varied communications' requirements of the maritime industry
for voice, fax and data services.
As an option for data communication, charges can be based
on the packets of data transmitted (MPDS) rather than the
duration of message transfers.
Fleet 77 complies with the specifications of the International
Maritime Organizations (IMO) for GMDSS and offers global coverage
for all services, while Fleet 55 and Fleet 33 operate within
the Inmarsat spot beams for all services except low-speed
voice which is global. The two latest members of the Fleet
family, Fleet 55 and Fleet 33 have the benefits of reduced-size
antennas and lower cost.
Fleet services
comparison table
Service
FLEET 77
FLEET 55
FLEET 33
Coverage
Global
Global
Voice
Spot Beam
Data & Fax
Global
Voice
Spot Beam
Data & Fax
Voice
Global Digital
Mini
- M
Speech
Mini
- M
Speech
Mini
- M
Data
Circuit Switched
64
kbps ISDN
64
kbps ISDN
9.6
kbps
data variant option
Data
Packet Mode
MPDS
MPDS
MPDS
data variant option
FAX
2.4
Kbps
9.6 Kbps
64 Kbps
G4 fax
2.4
Kbps
9.6 Kbps
64 Kbps
G4 fax
9.6
Kbps
fax
GMDSS
Yes
No
No
MPDS or ISDN
Fleet 77
and Fleet 55 offer Mobile ISDN for voice, fax, large file
transfers and facilities such as videoconferencing. In general,
if speed and high throughput are required, then the Mobile
ISDN option is recommended to be used. Alternatively, the
Mobile Packet Data option serves the need for regular e-mail,
web browsing, smaller file transfers and other standard networking
activity.
ISDN
MPDS
Video
conferencing
Video streaming
Large file transfer
Store & forward video
Photo transmission
Secure voice & data
High quality audio
Web
Browsing
Interactive e-mail
Intranet access
IP / Corporate LAN access
E-commerce
Navigational updates
Database queries
Vessel Monitoring
