Explanation: When placing a call to a shore telephone via VHF marine radio, you would use Ch-28. This channel is specifically designated for public correspondence, which means connecting to the shore-based telephone network through a marine operator. * **Ch-16** is the primary distress, safety, and calling channel. It's used for initiating contact or reporting emergencies, not for routine telephone calls. * **Ch-70** is dedicated exclusively for Digital Selective Calling (DSC) for automated distress alerts and digital calls, not voice communication. * **Ch-06** is an intership safety channel, typically used for ship-to-ship communications concerning safety of navigation.