Powerful theft deterrent

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Wed 9 Nov 2005 10:16
Powerful theft deterrent - SjB {P}
I was interested to read how the pirates who tried to hijack a cruise ship off the coast of Somalia were repelled;
news.bbc.co.uk/1/hi/world/africa/4418748.stm (cut and paste - clickability removed on purpose)

Inside a previous car of mined I fitted two small, hidden, but painfully loud and utterly piercing sirens to deter theft. They were triggered by the main alarm but had a safety override enabled by pressing two of the normal dash switches to activate a couple of relays. I removed the setup after advice from a solicitor friend that I was open to prosecution if a thief hurt their hearing (quite likely), so I guess the high seas are something different! The spec of the sonic device used on the ship is impressive given that every increase of 3db is a doubling of the perceived volume. Ouch! Pardon?
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Wed 9 Nov 2005 10:33
Powerful theft deterrent - helicopter
I have a high spec sonic device in my Civic which is enough to frighten any hijacker - SWMBO is very good at giving people who upset her severe earache ....
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Wed 9 Nov 2005 14:55
Powerful theft deterrent - Stuartli
>>is very good at giving people who upset her severe earache ....>>

But surely she would have a similar experience?

Re doubling of sound in the original thread i.e. every 3dB. It's not perceived, it's a fact.
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What\'s for you won\'t pass you by
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Wed 9 Nov 2005 12:37
Powerful theft deterrent - SteVee
Didn't Suzuki make a short range version of this device - an SRAD ?
Can I have one to warn cell phone users of my proximity please ?
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Wed 9 Nov 2005 12:55
Powerful theft deterrent - Roly93
I'd still like to know how these pirates thought they could board a huge and very fast ocean liner from a small boat with an outboard ?
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Wed 9 Nov 2005 14:29
Powerful theft deterrent - Timaru
I doubt they would have lasted long if they had managed to board it, since 9/11 cruise ships have carried an infantry section aboard - all fine and dandy unless the passengers are caught in the crossfire.
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