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Scuba Forum / General / May 2004boat signaling devices
Does anyone know of a good setup to use as a signalling ( sounding) device to underwater divers? I was considering a horn mounted to the inside hull bottom. Would like to be able to alert divers to stay clear of the boat in case the engine had to be started while divers are down. Thanks for any advice. John C. > Does anyone know of a good setup to use as a signalling ( sounding) > device to underwater divers? > I was considering a horn mounted to the inside hull bottom. > Would like to be able to alert divers to stay clear of the boat in > case the engine had to be started while divers are down. > Thanks for any advice. M80-s work pretty well... A hammer applied to a capstan works well. Cheap too. > Does anyone know of a good setup to use as a signalling ( sounding) > device to underwater divers? [quoted text clipped - 3 lines] > Thanks for any advice. > John C. >A hammer applied to a capstan works well. Cheap too. I have a fiberglass 24 foot cabin cruiser, no capstan or other metal object like that to bang on. Good idea though. The m-80 idea sucks...lol. >>A hammer applied to a capstan works well. Cheap too. >> >I have a fiberglass 24 foot cabin cruiser, no capstan or other metal >object like that to bang on. Good idea though. > The m-80 idea sucks...lol. Stick your Glock underwater and pop off a few rounds. It will not only alert them it'll give them a damned good reason to stay clear.  Signaturedillon When I was a kid, I thought the angel's name was Hark and the horse's name was Bob. >Stick your Glock underwater and pop off a few rounds. It will not >only alert them it'll give them a damned good reason to stay clear. Another not so good idea. That might get the glock rusty. There could be other reasons to signal divers from the dive boat, such as to let them know to watch out because other boats are approaching the dive area. I have to believe that other people with dive boats have considered a diver alerting system from the dive boat...no? I tried using my boat horn to alert a diver who was under last week, but he didn't hear it at all. >>Stick your Glock underwater and pop off a few rounds. It will not >>only alert them it'll give them a damned good reason to stay clear. > >Another not so good idea. That might get the glock rusty. Nah, Glocks are perfectly happy underwater. It's all that plastic and Tenifer coated stuff. They are actually designed to work underwater. I would, however, use jacketed hardballs, as JHPs have some rather surprising effects underwater. > There could be other reasons to signal divers from the dive boat, >such as to let them know to watch out because other boats are [quoted text clipped - 3 lines] > I tried using my boat horn to alert a diver who was under last week, >but he didn't hear it at all. I've experienced a recall device in Hawai'i (with Mike Severns) that's just a speaker (designed for salt water, of course) and mike. The announcement "surf's up, better get back to the boat" came through crystal clear. Signaturedillon When I was a kid, I thought the angel's name was Hark and the horse's name was Bob. > >Stick your Glock underwater and pop off a few rounds. It will not > >only alert them it'll give them a damned good reason to stay clear. [quoted text clipped - 8 lines] > I tried using my boat horn to alert a diver who was under last week, > but he didn't hear it at all. Maybe you could get one of those scrolling, led marquee signs and attach it to the bottom of the boat... :-) > >>A hammer applied to a capstan works well. Cheap too. > >> [quoted text clipped - 4 lines] > Stick your Glock underwater and pop off a few rounds. It will not > only alert them it'll give them a damned good reason to stay clear. Just make sure its *completely* under water... > >A hammer applied to a capstan works well. Cheap too. > > > I have a fiberglass 24 foot cabin cruiser, no capstan or other metal > object like that to bang on. Good idea though. > The m-80 idea sucks...lol. The Navy uses them; it called a Audible Recall Device, M137 MOD 0, self contained with a pull igniter. ;-) > I was considering a horn mounted to the inside hull bottom. > Would like to be able to alert divers to stay clear of the boat in > case the engine had to be started while divers are down. Needs to be one of those piezo electric buzzers that sound on some vehicles when they are backing up... Actually, there is a company that produces a piezo electric diver recal device... http://www.oceanears.com/2004pagedrs.html Is it worth $1K? Not in my opinion... Seems kind of expensive for a glorified buzzer... > Needs to be one of those piezo electric buzzers that sound on some vehicles > when they are backing up... Actually, there is a company that produces a > piezo electric diver recal device... and I figured you'd just endorse Scott's device. ;-) Curtis "Curtis" wrote... > and I figured you'd just endorse Scott's device. ;-) Actually, I figured an M203 would be a more appropriate signally device... |
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