Global Maritime Distress and Safety System (GMDSS)

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Control Centre

The minimum configuration of the control center include:

• Automatic DSC operator workstation

• Automatic Voice operator workstation

• Automatic NAVTEX operator workstation

• GMDSS server model KENTA GMDSS server with PSTN gateway, recording and playback system, NAVTEX and GMDSS functions

• Automatic system control & monitoring operator workstation

The maximum configuration of the control centre

System architecture, the technical capabilities of the hardware and software of a coastal GMDSS and NAVTEX system allow full redundancy of all system components.

VHF Base Station

The minimum configuration of the base radio station include:

1. Coast VHF transceiver model KVHF-4010-50 (50W) for channel 70

2. Coast VHF transceiver model KVHF-4010-50 (50W) for channel 16

3. Coast VHF transceiver model KVHF-4010-50 (50W) for working channels
  
4. One Rack 19"

Power also available : 25W and 40W.

MF/HF TX Base Station

The minimum configuration of the base radio station include:

1. Coastal MF/HF Transmitter model KTX-2012-1000 (1kW) for DSC frequencies

2. Coastal MF/HF Transmitter model KTX-2012-1000 (1kW) for 2182kHz

3. Coastal MF/HF Transmitter model KTX-2012-100 (1kW) for working frequencies
   
4. One Rack 19" 

Power also available : 2kW and 5kW.

MF/HF RX Base Station

The minimum configuration of the base radio station include:

1. Coastal MF/HF receiver model KRX-2072 or NAV-eBOX for channel DSC frequencies

2. Coastal MF/HF receiver model KRX-2072 or NAV-eBOX for channel 2182kHz

3. Coastal MF/HF receiver model KRX-2072 or NAV-eBOX for working 
frequencies
    
4. One Rack 19"
 

NAVTEX Base Station NAVDAT ready

The minimum configuration of the base radio station include:

1. Coastal NAVTEX Transmitter model KTX-5210-1000 (1kW)
It works on both NAVTEX frequencies (490kHz or 518kHz).
The KTX-5210-100 transmitter uses up-to-date technologies and is from now ready for the incoming NAVDAT system (500kHz)

2. NAVTEX matching box model KTX-5252-1000

3. Umbrella-Loading Folded Monopole or 74-Ft Coil Loaded Self-Supporting Whip Antenna

4. One Rack 19" 

Power also available : 2.5kW and 5kW.

Coastal NAVTEX receiver

The minimum configuration of the base radio station include:

1. Coastal NAVTEX receiver model KRX-2072

2. Active whip antenna
  
3. One Rack 19"

All-In-One Coastal Solutions

Coastal GMDSS system sea area A1 09.12.2018 Coastal GMDSS system sea area A1


Control Centre

The minimum configuration of the control center include:

• Two Redundant Automatic DSC operator workstation model KGMDSS-DSCOC
• Two Redundant Automatic Voice operator workstation model KGMDSS-VOIPOC
• Two GMDSS server model KENTA GMDSS server with PSTN gateway, recording and playback system model GMDSS Server
• One Automatic system control & monitoring operator workstation model KENTA-MiS

The maximum configuration of the control centre

System architecture, the technical capabilities of the hardware and software of a coastal radio system sea area A1 GMDSS  allow full redundancy of all system components.

VHF Base Station

The minimum configuration of the base radio station include:

1. Two Coast VHF transceiver model KVHF-4010-50 (50W) for channel 70
2. Two Coast VHF transceiver model KVHF-4010-50 (50W) for channel 16
3. One Coast VHF transceiver model KVHF-4010-50 (50W) for working channels
4. One Rack 19"

KENTA-GMDSS A1

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Coastal GMDSS system sea area A2 09.12.2018 Coastal GMDSS system sea area A2
KENTA-GMDSS A2 System

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13.07.2017

Global Maritime Distress and Safety System (GMDSS)

Global Maritime Distress and Safety System

mst-1124.jpg .              msu00-00 Marinsys-GMDSS A1 TDS rev15 200617.jpg              бп00-00 Marinsys-GMDSS A1 TDS rev15 200617.jpg . 

The Global Maritime Distress And Safety System (GMDSS) is used for rescue, and it is essential for the safety of life at sea. It has been embraced by the government at the international convention SOLAS '74 (SAFETY OF LIFE AT SEA) and it was developed to guarantee a greater efficiency in carrying out rescue operations, taking in consideration new technologies such as Digital Selective Call (DSC), Narrow Band Data Print (NBDP) and the use of geostationary/polar satellites.

The system was developed to give to the vessel in need of assistance the ability to send distress signals to the control centers and to other vessels. The primary objective of the system is to notify coastal authorities and send the request for immediate assistance. The MRCC (Maritime Rescue Coordination Center) coordinates the operations of rescue while other ships in the surrounding area are obliged to give assistance.
This operative ability was obtained respecting several functional requirements that were considered essential to guarantee safety at sea; All these functional requirements are satisfied by a combination of the following radio-communication services/systems:
  • INMARSAT system using geostationary satellites.
  • COSPAS-SARSAT system using satellites in polar orbit.
  • Maritime radio service in VHF band (156-174 MHz).
  • Maritime radio service in MF band (1.6-4.0 MHz).
  • Maritime radio service in HF band (4-27.5 MHz).
The type of radio communication service depends on the geographic location in which the vessel operates. The following areas are defined as follows:

AREA A1 Area covered by a VHF coastal radio station with continuous DSC service.
AREA A2 Area covered by a MF-HF coastal radio station with continuous DSC service (excluding area A1).
AREA A3 Area covered by stationary satellites IMMARSAT (excluded areas A1 and A2).
AREA A4 Area not covered by any of the above (A1, A2, A3).

The emergency call procedures are divided by area. The DSC is part of the GMDSS, and it is essentially a system that allows "selective calls" ship-ship and ship-land with automatic identification of the vessel from the coastal station. In fact, every "call" has a digital packet in one of the four preset standards: Distress, Safety, Routine, Urgency.

The "Distress" messages are automatically transmitted to all stations in the maritime bands: MF
(2187.5 kHz), HF (4207.5, 6312, 8414.5, 12577, 16804.5 kHz), VHF (Ch.70 - 156.525 MHz).
The GMDSS proposed by ELMAN is composed by the following units:
  • N. 2 VHF/FM transceivers (MST-11124) in marine band with DSC module (one in working mode and one for redundancy) complete of antennas.;
  • N. 1 MF-HF Receiver (+1 Optional) with encoder/decoder DSC (mod.MSR-1097);
  • N. 2 Power supply for MST-11124 115 or 220 VAC input and 24 VDC as output;
  • N. 1 Laptop PC with the GMDSS software necessary to manage the MST-1124 and the MSD-1097;
  • N. 1 Direction finder V-UHF to localize distress signals in the VHF marine band (included channels 16, 70, 6, 13) with the addition of the rescue frequencies:
    • 121.5 MHz (civil aviation rescue).
    • 243.0 MHz (military aviation rescue).
    • 406.025 MHz (radio beacon rescue E.P.I.R.B.).
For Control Centres, Marcom provides an integrated software solution designed to provide functions for continuous monitoring and identification of emergencies in GMDSS Area: Marinsys GMDSS.


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