I was wondering.. How would the conversation with the boat go?
Hi, I can't see you. Where are you?
I'm here, where are you?
With a land reference I can see it being helpful, but without one, other than letting someone know you are still within range and still alive, how does it help?
Granted if you could see the boat, you could tell them if they were pointed the right way. It seems a reasonable price to be able to communicate. Does anyone know if a VHF radio has ever assisted with a rescue?
If it did have GPS that would be ideal.
Thanks
First, the smart diver with more than an SMB would leave a list of his/her personal survival equipment inventory with the dive boat, dive op, hotel, and anyone back on the beach.
Second, figure timing into this. You're supposed to be down an hour. You come up in an hour and the dive boat is no where in sight. Chances are excellent you are well within five miles or less of their location, and probably well less than a couple thousand yards.
Third, you would immediately pull out your radio and begin broadcasting. ANY liveaboard would be able to hear you and either find you with the VHF direction finding capability of their radio/nav gear (best case) or get someone on scene that could find you with such equipment. Best of all they know you're alive and not a drowning victim. That eases everyone's mind and builds a sense of urgency to rescue you before conditions deteriorate.
Fourth, even if they didn't hear you, imagine how much better your state of mind would be knowing that as soon as someone knows you are missing, they'd reference the gear inventory you left with the dive world and know you have communication gear on your person.
But just for entertainment sake let's say you were diving from a non-radio equipped Panga that beat feet to get assistance because the crew freaked as soon as you didn't surface where they expected you to appear. You'd still broadcast immediately as soon as you realized you can't see the boat. I imagine the conversation would go like this:
"Mayday Mayday Mayday, two divers abandoned by dive boat. Mayday Mayday Mayday."
Boat, airplane, or anyone with a marine VHF radio within 5-14 miles -"Diver, this is the the sailing vessel Spit into the Wind, we hear you. Do you know your position?"
Diver - "Negative, we were diving Donovan's Reef on the dive boat Shark Bait. When we surfaced at 1430 hours (or 2:30 PM) the boat was no where in sight. Spit, do you have VHF direction finding capability?"
Boat - "Diver, negative. We're five miles from Donovan's reef. We'll head that direction and we'll try to raise Shark Bait and the Coast Guard (or local military) to get more assistance."
Diver - "Great! Here's a list of our survival gear. (List what you have on your person). We'll maintain radio contact and shout out when we have a visual on any vessel or airplane. Once we are in visual and radio contact, we'll deploy our (have a plan what equipment you'll use)." Also have a plan how you intend to save battery power. Stick to that plan until you have communication with someone and let them know your battery state during conversations.
Yes, GPS would be great because you could give exact latitude and longitude and keep anyone listening updated on your location. The Standard Horizon HX850s for $250 appears to be the only handheld VHF with GPS. I'm sure others will follow.
Standard HX850s Handheld VHF w/ GPS - VHF Marine Equipment, Accessories & Equipment, Watercraft & Marine Equipment - nuLime.com
But if you didn't have it and could talk to someone, anyone, you'd get found one heck of a lot quicker than just floating and praying like a spec on the ocean. Imagine what talking to anyone would do to your spirits compared to just floating and wondering. Plus, ANY boat within listening range that can help will help. The divers lost for 60 hours and the divers lost for 19 hours both reported seeing search helicopters/planes but they themselves were not visible in the water.
What to buy first; VHF water resistant radio and submersible container, or personal locator beacon and submersible container? Personally, I'd have both, but first I'd buy the radio. That's only a subjective personal decision based upon the experience of a friend left floating at night on a lobster dive in the Channel Islands for almost eight hours. His uncle lost him while manning a pleasure-type power boat. He was picked up the next morning by a commercial dive boat that had been notified by the Coast Guard of the missing diver. A VHF handheld radio would have had him onboard his own VHF radio-equipped pleasure boat in probably less than 15 minutes.
Bottom line is that the sooner someone knows you are missing, has notified the local authorities, and KNOWS you have communication equipment, the sooner you'll be found.