Channel 16 is your first and 9 is the second
16 will get you tuned into the USCG but keep this in mind.....Much like all other vhf radios your handeld vhf works by line of site and does not have a strong signal so just because you call for help doesn't mean someone will hear, that's why its important to also carry a cell phone. Its unlikely that you will fish so far from the coast that you will not have a cell phone signal.
BTW......floating or not, leash your radio. TRUST ME
