Some brands (like Cobra) offer a feature that records the last 20-30 seconds of incoming audio, which is incredibly helpful if a transmission was muffled or garbled.
For most coastal boaters, a is the best investment. It ensures you are part of the modern safety network while providing the range needed to reach help. If you frequently travel in high-traffic areas, spending the extra money for a unit with an integrated AIS receiver is the smartest upgrade you can make.
A common mistake is buying an expensive radio and pairing it with a cheap antenna. Since VHF is "line-of-sight," your range is determined more by your antenna’s height and quality than the radio itself. For most powerboats, an 8-foot, 6dB gain antenna is the gold standard. Final Verdict
High-end VHF radios now include AIS receivers. This allows you to see the position, speed, and heading of nearby commercial ships directly on your radio screen or networked plotter—a lifesaver in foggy conditions or busy shipping lanes.