Here are the procedures for safety calls that everyone should know...
https://www.boatus.org/marine-commun...20information.
Keep in mind to repeat you call signal 3 times, speak clearly and calmly, identify your vessel and location and situation. The other important thing for all of us with handhelds is to use relays. For example down at Makoville, if you're around the backside of the island, basecamp is unreachable and there's likely no Mexican Navy for 50 miles but if there's someone within range, you should be prepared to relay your situation through them to someone with a power boat who can get to you. Always study your charts so you know the waters you will be in as well and can communicate your location accurately.