On which VHF channel do you provide safety information after calling initially on channel 16?

The correct information regarding after calling initially on channel 16 for providing safety information is that it should be done on channel 06. Channel 16 is designated as the distress and calling channel on VHF marine radios. Once communication is established on channel 16 for safety purposes, the conversation is typically moved to a working channel, where appropriate safety information can be relayed without blocking distress communications.

Channel 06 is specifically used for safety information exchanges between vessels and other marine services, making it the proper channel for this purpose. Understanding this allows mariners to comply with established protocols and ensures that safety communications are conducted efficiently and effectively, without interfering with distress calls on channel 16.

Other channels like 09, 12, and 21 serve different purposes in maritime communication, such as ship-to-ship or ship-to-shore communications, but they are not designated for safety information exchanges following an initial distress call. This reinforces the importance of knowing the correct channels for specific types of communication while operating on the VHF marine system.