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Basic Equipment For Convention Ships

GMDSS equipment requirements (minimum requirements including duplication of equipment) in force for all passenger ships in international trade as well as cargo ships of 300 grt. and upward in international trade:

Equipment	Sea Areas
Equipment	A1	A2	A3 Inmarsat Solution	A3 HF Solution	A4
VHF with DSC	x	x	x	x	x
DSC watch receiver channel 70	x	x	x	x	x
MF telephony with MF DSC		x	x
DSC watch receiver 2187.5 kHz		x	x
Inmarsat ship earth station with EGC receiver			x
MF/HF telephony with DSC and telex				x	x
DSC watch receiver MF/HF				x	x
Duplicated VHF with DSC			x	x	x
Duplicated Inmarsat SES			x
Duplicated MF/HF telephony with DSC and telex					x
Navtex receiver 518 kHz	x	x	x	x	x
EGC receiver		X1		X1	X1
Float-free satellite EPIRB	x	x	x	x	X4
Radar transponder (SART)	X2	X2	X2	X2	X2
Hand held GMDSS VHF transceiver	X3	X3	X3	X3	X3
For passenger ships the following has applied since from 1 July 1997
"Distress panel" (SOLAS Ch.IV/6.4 and 6.6)	x	x	x	x	x
Automatic updating of position to all relevant radiocommunication equipment (SOLAS Ch.IV/6.5)	x	x	x	x	x
Two-way-on-scene radiocommunication on 121.5 or 123.1 MHz from the navigating bridge (SOLAS Ch.IV/7.5)	x	x	x	x	x

X1	Outside Navtex coverage area

X2	Cargo ships between 300 and 500 grt : 1 set
	Cargo ships of 500 grt and upwards and passenger ships: 2 sets

X3	Cargo ships between 300 and 500 grt : 2 set
	Cargo ships of 500 grt and upwards and passenger ships: 3 sets

X4	Inmarsat-E EPIRB cannot be utilized in sea area A4

Click here to know more about sea areas.