EMS SATCOM Fleet 55 provides 64 Kbps ISDN connectivity
at sea. The terminal, a power supply and a high performance
maritime stabilized antenna, enables you to send and receive
email, access your VPN, transfer data and pictures and run
live video conferencing, all at 64 Kbps, or send faxes at
14.4 kbps - whatever facilities you need to stay in touch
while on the move.
Fleet 55 really enables shipboard IT as never before.
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EMS SATCOM Fleet 55 also supports Inmarsat's
popular Mobile Packet Data Service (MPDS) - an "always connected"
service suitable for web browsing and email. This is very
cost effective for low data transfers as it is billed by the
Mbit and not by connect time.
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The development of the EMS
Fleet 55 terminal has been one of continuous and natural evolution
from previous generations of EMS Land Mobile Inmarsat products
– namely the STORM portable GAN terminal and the vehicular-mounted
CYCLONE.
Launched in 2001, the STORM
provided the basis for the overall design and engineering
of the ensuing terminals and enabled 64 kbps ISDN communication
from anywhere on the Earth’s landmass. The STORM found
favour within mobile new reporting teams and the oil exploration
market.
The CYCLONE, launched in 2002,
extended the capabilities of the STORM portable GAN terminal
still further by the use of a simple-to-fit conversion kit,
consisting of a mounting cradle for the terminal, a power
supply and a high performance vehicular steerable antenna.
The development of the Fleet
55 involved the incorporation of a marine power supply and
a high-grade steerable marine antenna. Inmarsat Mobile Packet
Data Service (MPDS) was introduced into all the above products
in March 2003.
It can thus be seen that the
EMS Fleet 55 has an existing track record within markets that
demand high quality and reliability.
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The EMS Fleet 55 terminal supports
a comprehensive selection of interfaces, including, ISDN,
X.21, RS449, RS232, and two RJ11 ports, as well as an option
for enabling of STUIIB/III secure communications.

Two distinct
data services are available with the Fleet 55, Mobile 64 Kbits/s
ISDN, and Mobile Packet Data Service (MPDS). Both services
utilize the spot beams on Inmarsat's satellites, providing
coverage that includes the majority of ocean areas where most
shipping takes place. The global Inmarsat beams provide coverage
for the basic Fleet 55 voice service.
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One of the unique features of the EMS Fleet
55 terminal is its Virtual Front Panel. By facilitating full
control from an attached computer, the front panel allows
the terminal to be operated from a location other than where
it is physically situated.
For a short simulation of the Virtual Front Panel in action,
click on the Virtual Front Panel image in order to load a
Shockwave file. |
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Spot Beam Services:
- ISDN 56k/64k kbps (UDI, 3.1k audio, speech)
- MPDS (mobile packet data service)
Global Services:
- mini-M voice (4.8 kbps)
- STU IIB/III (optional)
Size and Weight:
- Size: 220 x 269 x 75 mm
- Weight: 2.5kg
Operational Temperature Range:
Humidity:
- 95% non condensing at 40°C

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System Features:
- Continuous tracking of satellite using dedicated receiver
- No cable unwrap
- Standard coaxial Interface to terminal
Vessel Motion Specifications:
- Turn angle constraints None
- No cable unwrap
- Roll ±30 deg period > 8 s
- Pitch ±10 deg period > 6 s
- Yaw ±8 deg period > 50 s
- Surge ±0.2 g
- Sway ±0.2 g
- Heave ±0.5 g
- Turning rate ±6 deg/s
- Headway < 30 knots
- Tracking accuracy 3 degrees RMS, 5 degrees peak
Size and Weight (Antenna only):
- Size: 570 mm DIA x 640 mm height
- Weight: 18 kgThe antenna base has 4 hard-mounting points.
Environmental Specifications:
- Antenna -25°C to +55°C
- Relative Humidity: 95% at 40ºC
- Spray: Solid droplets from any direction
- Solar radiation: Infrared at 500 W/m2, Ultra violet at
54 W/m2
- Rain: 100 mm/hour
- Wind: Operation with relative average wind speed of up
to 100 knots
- Vibration Operational According to EN 60945 (1997)
- Vibration Survival Mil Std 810, EN945
Power supply:
Electromagnetic Compatibility:
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The
equipment costs less to acquire and install than any other
high-speed data terminal. Usage costs are also lower. Compared
to previous generations of Inmarsat services (such as Inmarsat
A, B or M) savings are considerable. EMS has already documented
reports of Inmarsat Fleet users enjoying 67% savings on data
communication costs and 30% overall savings when compared
to Inmarsat-A.
Cost savings are attributable not only to the low airtime
tariff but also to the added flexibility that packet data
provides. Mobile Packet Data Service (MPDS) is charged by
the bit and is hence suited to interactive or "bursty"
traffic such as e-mail, instant messaging and automatic data
acquisition from ship sensors. |
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Other benefits are derived from the small size and
weight of the radome. Measuring only 68 cm in height and weighing
in at 18 Kg, the radome can easily be handled and installed by one
person, eliminating the cost of expensive cranage normally required
to complete an installation.
Fleet 55's compact size makes it ideally suited to vessels where
space restrictions are an issue, or for ship managers who may wish
to quickly commission or decommission satcom equipment on vessels
as they come in and out of management.
EMS intends to address both the new-build and retrofit markets.
For owners of smaller vessels there has, to date, been no affordable
or viable data communications option at all; for larger vessels,
it is a case of upgrading aging systems that often are too costly
to maintain or that provide inferior service.
Typical customers will include fishing vessels, ocean-going merchant
vessels, larger yachts and ferries - in fact anyone who requires
a compact terminal with a highly versatile data capability.


The map shows the current coverage under the Inmarsat 3
satellites. The F-55 voice services are available throughout
the global beam footprints.
F-55 data services are available within the dark blue spot
beam areas. However, once Inmarsat's new I-4 constellation
is operational (mid 2005), the extra spot beams provided
by these satellites are anticipated to fill in almost all
the gaps within the IOR and AOR-W regions.
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| Download and Acrobat file of the EMS Fleet 55 click
here |
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