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Old 06 August 2013, 17:14   #11
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Wot Chris123 said...Think also present on ALBs for helm if alone at USP...
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Old 07 August 2013, 02:24   #12
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Originally Posted by mister p View Post
Have I missed something or is the kill switch not exactly what you want. Surely if helm is concentrating enough not to notice MOB, the last thing he /she wants under ( I assume ) extreme conditions is loss of control.
A warning yes, but loss of power? I don't think so. Very confusing and dangerous. Flooding from wake at the stern is just the beginning.
Big warning but not kill.
As said i will use the kill switch to activate a buzzer and/or warning light, not to cut power to the engines.
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Old 07 August 2013, 02:43   #13
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Originally Posted by chris123 View Post
The Atlantic 85 has an additional kill cord at the 4th (back) seat only, wired to a warning light at the helm seat and a loud buzzer. There is no connection from this kill cord to the engines.

Pull the cord, and the light comes on and the buzzer sounds. There is also a mute button to shut the buzzer up so you can hear what you are doing whilst you pick the MOB up.

When the A85 gets its new nav system, pulling the cord will also put an MOB alert on the chart system

Cheers

Chris
Chris, any idea how that link to the MOB alert on the plotter works?
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Old 13 August 2013, 18:25   #14
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I'm guessing they feed something in via NMEA?

NMEA 183 would let you have a bit of kit that captured the current pos and fed it back as a WPT named MOB? Possible to also send it on NMEA as though it was an AIS Meesage 14?? Would probably take a fair bit of fiddling. Hassle for 1 RIB but bear in mind the RNLI have hundreds with the same kit, plus I'm sure they have enough power to go to Garmin or whoever they buy their plotters from and say can you tell use the best NMEA sentence to do this...

Not sure what's needed to do that - if you need to get the possition and build it into the sentence to send back that sounds rather complex. If you could send the NMEA without the pos and the recipient system would know that meant current pos then it may be pos with some simple chips?

NMEA 2000 is probably far more appropriate than 183. Not going to be a 20 solution...
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Old 13 August 2013, 18:56   #15
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Our sister forum (MOB NMEA sentence - Cruisers & Sailing Forums) has some discussion on this. Several of the fancy electronic MOB systems will output NMEA messages if they detect someone has gone for a swim.
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Old 13 August 2013, 19:03   #16
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Our sister forum...
er, they appear to be WAFIs P. Not sure they can be immediate "fambily" - second cousins maybe. On our mother's side.

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Old 14 August 2013, 04:47   #17
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Chris, any idea how that link to the MOB alert on the plotter works?
I would guess it's a bit like a remote switch version of the ones most plotters I've seen have - push the "MOB" button & it drops a "mob waypoint" on screen with an "auto goto" to provide a big arrow to point you at them.
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Old 17 August 2013, 07:56   #18
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I would guess it's a bit like a remote switch version of the ones most plotters I've seen have - push the "MOB" button & it drops a "mob waypoint" on screen with an "auto goto" to provide a big arrow to point you at them.
That's pretty much it - the plotter has a switch input with the MOB button / MOB killcord at the 4th seat wired in series across it. Press the button on the console or pull the MOB killcord and the circuit breaks.

The plotter records the MOB position as current GPS position, and displays an MOB mark on the chart at the location. It also gives range and bearing back to the MOB, as well as time to get back to MOB at current speed and time the MOB has been in the water.

Cheers

Chris
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Old 20 August 2013, 09:42   #19
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Try this

CoastKey | Wireless Killcord | Wireless Killcords | Killcords | Boat Engine Kill Switch | Installation
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