zephyrsailor
Well-Known Member
how do fog signals on bouys know when its foggy?
mooooo
- Thread starter zephyrsailor
- Start date
sorehead
N/A
dunno, how do fog signals on bouys know when it's foggy?
zephyrsailor
Well-Known Member
i don't know, i'd never thought about it till i was asked yesterday. so i thought some clever person here would know.
Rowana
Two steps lower than the ships' cat
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how do fog signals on bouys know when its foggy?
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What's the prize, and how many tries can I have ? ? ?
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how do fog signals on bouys know when its foggy?
[/ QUOTE ]
What's the prize, and how many tries can I have ? ? ?
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sailorman
Well-Known Member
Humidistat ?
peterb
Well-Known Member
The ones I know make noises all the time, foggy or not. Lighthouses with fog signals usually have fog detector lights.
BrendanS
Well-Known Member
Fog detectors (they shine a beam of light out, in foggy conditions, some of that light is scattered back), or by radio remote control
