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Starting signals -guns and all

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SymBoy View Drop Down
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Post Options Post Options   Quote SymBoy Quote  Post ReplyReply Direct Link To This Post Topic: Starting signals -guns and all
    Posted: 26 Feb 07 at 9:31pm

I have been tasked with trying to improve the sound signals for open meetings held at our club. For club racing we are happy with a horn system using a 12V supply, but out on the open water with committee boat starts, it is too directional and barely audible in a good breeze. We are trying to avoid the shot gun route because we not comfortable about holding a firearm on site. Any ideas? 

 

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tgruitt View Drop Down
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Post Options Post Options   Quote tgruitt Quote  Post ReplyReply Direct Link To This Post Posted: 26 Feb 07 at 10:42pm
What about lights? I dont think there is a problem with not being able to hear them, people should see the flags, I have always been taught to ignore the hoots and sail to the flags.
Needs to sail more...
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Post Options Post Options   Quote redback Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 07 at 12:08am

I'm sure you can get 12V sounders as used in the security industry which exceed 120dBA.  At that level your operators would need ear protectors - so it should be loud enough.

I've just looked at the RS Components website they have something at about 123dBA but I have seen something even more appropriate elswhere.

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Post Options Post Options   Quote radixon Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 07 at 7:49am
I have been to a club where they use lights for all racing.

Are you thinking of something you can put on the comittee boat? Lights is a good idea but they need to be big, thats the downside.

Other than that it would be flag/air horns.
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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 07 at 9:02am
Committee boat starts we use flags, club races we use horn and lights although we can't always see the lights as other peoples sails are in the way but not a problem if you get your watch right on the 4 minute light.
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Post Options Post Options   Quote hurricane Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 07 at 10:43am
a marine 12v volt fog horn is very loud and as the frequency is low the sound travels further... where as most clubs use horns with a high frequency that struggle to travel as far.
lifes to short to sail slow boats!

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Post Options Post Options   Quote Ian S Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 07 at 12:30pm
Often wondered why a system couldn't be develped with a rib maybe 200 feet in front of the start line with a lighting gantry on the back, red - amber - green formula 1 style, all the sailors could see the signals then.. you'd still need your committee boat anchored at one end of the line to look out for the extra keen ones though.
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Post Options Post Options   Quote foaminatthedeck Quote  Post ReplyReply Direct Link To This Post Posted: 27 Feb 07 at 1:35pm
You would need some way of comunication between the two boats.
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Post Options Post Options   Quote getafix Quote  Post ReplyReply Direct Link To This Post Posted: 28 Feb 07 at 2:09pm
you can get some very nifty rigs with auto timing boxes and air-horns run off car batteries, Chichester YC have got one, no problems hearing it, even in the teeth of a serious blow

... Rock SC in Cornwall used to use horns and lights but you couldn't see the lights from the club line in a real Cornish squall (and you couldn't hear the old horns either)... just had to look for the flags, they are the constant!
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Post Options Post Options   Quote Pierre Quote  Post ReplyReply Direct Link To This Post Posted: 28 Feb 07 at 2:27pm

88mm Gun, live round, straight across the start line.  No problem hearing it and cures the OCS issue.

But, as the above would probably be spoilt by HSE issues , then Flags really are the only option.

 

 

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