Which frequency is SOLAS ships' VHF Channel 16 international calling and distress?

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Multiple Choice

Which frequency is SOLAS ships' VHF Channel 16 international calling and distress?

Explanation:
VHF maritime communications designate a single channel for distress and initial hailing: Channel 16, which uses 156.800 MHz. This frequency is internationally recognized under SOLAS as the calling and distress channel, and it’s continuously monitored by ships and coast stations so help can be initiated quickly. Once contact is made on Channel 16, vessels typically move the conversation to a working channel for normal traffic. The other options belong to different systems or purposes: 2182 kHz is a long-range distress frequency on the MF band, not a VHF channel. 156.525 MHz is used for digital selective calling (DSC) on Channel 70, not for voice distress or calling. 2187.5 kHz is another HF frequency not designated for the standard VHF distress channel.

VHF maritime communications designate a single channel for distress and initial hailing: Channel 16, which uses 156.800 MHz. This frequency is internationally recognized under SOLAS as the calling and distress channel, and it’s continuously monitored by ships and coast stations so help can be initiated quickly. Once contact is made on Channel 16, vessels typically move the conversation to a working channel for normal traffic.

The other options belong to different systems or purposes: 2182 kHz is a long-range distress frequency on the MF band, not a VHF channel. 156.525 MHz is used for digital selective calling (DSC) on Channel 70, not for voice distress or calling. 2187.5 kHz is another HF frequency not designated for the standard VHF distress channel.

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