Is a VHF marine radio required to carried aboard a 25 foot powerboat?

A VHF marine radio is not universally required on all 25-foot powerboats, but regulations can vary by country and region. In the United States, the Coast Guard mandates that vessels operating beyond three nautical miles from shore must carry a VHF radio. It's essential to check local regulations and boating requirements to determine if a VHF radio is necessary for your specific situation.