On what frequency would a vessel normally...

🔍 Key Concepts

• Distress and calling frequencies in the GMDSS (Global Maritime Distress and Safety System) such as 2182 kHz and VHF Channel 16 (156.8 MHz) • Difference between calling/distress channels and working channels • When you may use an alternative working frequency instead of the primary calling/distress channel

💭 Think About

• Which choices mention internationally recognized calling/distress channels, and which mention channels that would be used only for routine working traffic? • Under what condition would you NOT start on 2182 kHz or VHF Ch-16 when calling another ship? Think about whether you already know what channel the other ship is actively guarding. • Is there any requirement to wait until a specific time (like 15 minutes past the hour) before making a ship-to-ship call on the normal calling frequency?

✅ Before You Answer

• Verify which frequencies are internationally designated for radiotelephony distress, urgency, and safety as well as initial calling between ships. • Check whether there is any rule that limits ship-to-ship radiotelephony calling to only one band or region (for example, only 2182 kHz in ITU Region 2). • Confirm whether FCC-assigned working channels are used as the first point of contact, or whether you must usually establish contact on a recognized calling/distress channel and then shift to a working channel.

On what frequency would a vessel normally call another ship station when using a radiotelephony emission?

Only on 2182 kHz in ITU Region 2.

On 2182 kHz or Ch-16, unless the station knows that the called vessel maintains a simultaneous watch on another intership working frequency .

On the appropriate calling channel of the ship station at 15 minutes past the hour.

On the vessel’s unique working radio channel assigned by the Federal Communications Commission.

🔍 Key Concepts

💭 Think About

✅ Before You Answer