The frequency _________ is used for NAVTEX-type MSI.
A. 4125.0 kHz using simplex mode.
B. 4209.5 kHz using FEC mode.
C. 4209.5 kHz using ARQ mode.
D. 4125.0 kHz using FEC mode.
查看答案
It is required that ships proceeding at sea should keep continuous watch on _________.
A. VHF channels 16 and 13
B. Appropriate DSC distress and safety frequencies
C. INMARSAT TDM message channel
D. VHF channel 70 and channel 08
What kinds of ships may not comply with SOLAS convention?
A. 300GT upward
B. all passenger ships operating in international voyages
C. 500GT cargo ship
D. 300GT below
Which channel is designated for VHF DSC alerting?
A. Channel 70.
B. Channel 06.
Channel 13.
D. Channel 16.
A distress alert can be relayed from an RCC by _________.
A. major coast stations only
B. satellite and terrestrial systems
C. MF/HF and VHF stations
D. COSPAS-SARSAT
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