Dealing with pirates

That's the adventure, tricky water make us smart and evolved into better person (seawise)

 

The only thing that would make a pirate a better person is a bullet up the jacksie!

 

Ha...... ...... U must paid alot of money to the crook to chime like that..........

Let myself try meetin some pirate during my holiday and live to tell the tale........... ................Begone Evil ..... Here come the holiday mood ......

 

I don't know if this has been posted before (No time to go all the thread up) but, What about receiving pirates with a 9000 volts fence?
http://www.secure-marine.com/yacht/index.shtml

Another interesting feature:
http://www.shiploc.com/html/about_shiploc.html

And even watchfulness from the sky:
http://www.inventus-uav.com/home.html

2005 Piracy maps:
http://www.icc-ccs.org/prc/piracy_maps_2005.php

 

Guillermo

The concept is brilliant, but tis only part of the job! They can still shoot you or sink you , if only in frustration! but hell it's a good start! AS LONG AS IT'S SWITCHED ON! which of course brings us to the point, how much power is needed and what happens to repeated attacks? But yes, I do like the basic concept. Would at least prevent sneak attacks (but a watchman would still be advised at all times in known waters!)

 

Gui .... Safe...

It has been done on a deterent scale , it's not such a silly idea , I talked to folk who lived and cruised extensively in the Solomons, they used to hook a cattle electric fence unit to the safety wires to deter night boardings by light fingered locals.

One determined boarding by 2 machette armed young men in the Solomons was overcome by discharging a powder fire extinguisher into their faces.

A lethal EHT can easily be produced with virtually no power requirement unless it's electrocuting someone, even then the power requirement is low. The EHT module in your old TV will kill you very economically on power

All the best

 

with 9000 volts on board , you must know that it can track on moister or dirt, and cause step potential,,,,,,,,,,,,,which will kill or burn everyone

 

Listen to this pro, longliner45 he work with power company.

 

No step potential ? in a non conductive hull or a faraday cage (metal boat) from memory insulation only needs to be around 1mm of silicon per 1000 volts the system would only be activated in dire need and presumably could be designed with sensible fail-safes.

But as you imply any system designed to disable, kill or discourage will work just as well on those it protects unless everyone knows how to use the sytsem safely.

 

ITS CALLED ELECTRICAL THEORY FOR A REASON! no one ever knows what it will do under a miriad of conditions, on a boat you will use a delta system. on a delta system it is its own ground. step potentiol is when electricity go to ground but not always in a straight or correct path. if you are on a fiberglass boat you are still not safe! if you are on a metal boat you are even less safe.look at your local powerlinens they carry 7200volts ac, they have heavy ceramic insulators, and bells at the end of the circut. to stop the electricity from going to ground , I would not trust my life to 10 ft of silicone much less `1 mm per 1000 volts, and you are also incorrect on the silicone thing ,,,, it must be dielectrice,silicone and as for fiberglass hulls ,even the slightest bit of dirt will track voltage,,,you see , you have primarary and secondary voltage ...primary is useualy 2400 hundred to 72 hundred the lower the voltage the higher the amps ..secondary is 120 ,240, 480,,,,,,480 is the most dangerous, wont blow you off wont let you go, and not enough to blow a fuse . bucket trucks with a fiberglass bucket and 20ft fiberglass boom are tested once a month ,at 50000thousand volts to chech for tracking and failier, it is totally unfeesable to put this kind of voltage into the hands of the regular population,,,,,,,,,to much can go wrong remember electricity travals at 187000 miles per sec , the speed of light .no time to think of the mistake you have just made,,,,,,,,,,,,,longliner

 

er......... the chopper for oilfield operation for northsea have the same check but the lightning strike cross the body and end up at the fiber end blade and you have lucky crew swimming for life....... real story and real natural force. ELECTRIC.

 

Er, think your talking about static there Welly, back in the early sixties when us brits were starting to use 'choppers' for amphibious assaults and other types of warfare it was found that the build up of static in a chopper was quite dramatic! No problem until it was alll earthed! This was often done by unsuspecting deck crew waiting to sling a load onto the hovering chopper to go ashore ans the chopper and hook came down the crew reached up and the first guy to grab the hook - WHAM!!! **** he was thrown over the side or onto the deck not feeling too happy! Away boat to pickup one dazed confused sailor! Once it was found out what was doing it a chain was rigged up on a pole and the chopper earthed first - took all the fun out of underslung load transfers! but life was a little healthier for the flight deck crews! Won't tell you were a lot of this was happening but it was close to an island near you (actually your on it - back in our post colonial days)

 

Longliner

You've just put the blocks on what seemed a good idea! there again electrickery on small boats always was prone to problems. But better to know now than rig a set up and fry yourself!! Cheers buddy (back to the shotgun! or flare gun, or both!!)

 

What kills you is amperage, not voltage. I myself have been exposed to a 10.000 volts discharge in an school physics experiment, with no harm at all.
The Secure-Ship system produces a discharge of 36 mA, which produces a shock of 8 Joules, the legal limit.

 

I like the electrifying fence idea, actually, would it have to be switched on to offer a deterrent, or would they simply see it and think what else might be on board this vessel if they have gone to all this trouble to be prepared against pirates and target someone elses boat instead?
Probably, as Walrus said, they could still shoot you or the boat but still, good idea - better with it, even if it is not connected in any way than without it, even just for show.

Paul.