Anti piracy

[sparerooms]

Would it be possible to wire the yachts guardrails to the batteries?
Making the guardrails into an electric fence. Giving any pirates/ unwanted guests a nice surprise. Just a thought :-/

 

[richardabeattie]

A 12 volt fence exposed to the weather and sea might make the pirates' hands tingle!

 

[30boat]

There are high voltage 12volt electric fences.I have one for my dogs with an output voltage of 8Kv.That's quite a jolt.

 

[JumbleDuck]

Would it be possible to wire the yachts guardrails to the batteries?
Making the guardrails into an electric fence. Giving any pirates/ unwanted guests a nice surprise. Just a thought :-/

What your return path going to be?

 

[prv]

What your return path going to be?

He hasn't even grasped the difference between 12v and 240, don't confuse him with concepts like circuits

Pete

 

[Anders_P42]

They would start wearing rubber gloves

One of these would be work a treat.

 

[Seajet]

Sparerooms,

it's an old idea but as far as I know the patent is still held by Wile E Coyote and Wacky Races; be good if it worked though, it might cause a reduction in prats jostling the boat for harbour dues !

There was the other theory about dissuading boarders suggested by Joshua Slocum, of putting tin tacks on the decks to catch out the barefooted natives; but nowadays this would only have the effect of seriously p'ing them off as it spoilt their £1,000 a foot trainers...

 

[Rigger Mortice]

It brings tears to my eyes just to think of receiving the electric shock as I step over the guardrail. :ambivalence:

 

[ganter]

If they're already coming over the guardrail you need something more stringent. 300 rounds per minute springs to mind.

Best not to sail in the waters in the first place. Plenty of info out there to help you avoid hot spots.

 

[Fire99]

Just get a Magnum 45 and be done with it. If you fry them with electricity or shoot them, I think you'll have the same level of explaining to do

 

[Koeketiene]

Just get a Magnum 45 and be done with it. If you fry them with electricity or shoot them, I think you'll have the same level of explaining to do

Who would you tell - and why?

 

[lpdsn]

There are high voltage 12volt electric fences.I have one for my dogs with an output voltage of 8Kv.That's quite a jolt.

I had an eccentric physics teacher at school who liked to give people shocks with a 1.5V battery. Quite easy, all you need is a circuit with a large AF coil and a switch.

 

[William_H]

The concept of electrifying the wires might seem good but will inevitably catch the wrong people yourself. (or anyone trying to rescue your boat that has come adrift or similar) As said you want a cattle electric fence unit which gives kilovolt pulses.
I am guessing that this will give a shock to any intruder via a variety of body to sea water connections ie wet feet shoes clothes etc. The high voltage should get through anything.
Then there was Joshua Slocum who in Tierra Del Fuego was advised to sprinkle carpet tacks around the deck. It worked well according to his book.
good luck olewill

 

[GHA]

It brings tears to my eyes just to think of receiving the electric shock as I step over the guardrail. :ambivalence:

Don't pee on it either

 

[sparerooms]

Like most people have said 12v would probably give you a tingle but if an intruder was stepping over your guardrail and had an unexpected shock it would at least make them squeal or fall over.

If I was asleep below decks and I heard someone squeal or fall over above me. Atleast I would know something was wrong and it would give me time to get up and load my 50.cal and AK47 and gezb my frying pan ;-)

Is there any other early warning systems on the market?

 

[Seajet]

Sparerooms,

the electric fences I've seen farmers use seem to run from car batteries and people I know who've tried describe it as a lot more than a tingle !

The problem with using them on boats is establishing a circuit.

There are as many boat intruder alarms as mans' ingenuity can think of, from fishing line connected to a balanced frying pan to make a clatter, electronic jobs, to a pressure pad operating a crossbow aimed at the cockpit, or leaving a bottle of whisky laced with poison around, so as to ' take the b******s with you !

Of course sods' law means the owner gets these when coming back from the pub...

Seems to me a Big Dog takes the prize so far.

 

[Spirit of Glenans]

They would start wearing rubber gloves

One of these would be work a treat.

Seems to have almost the same rate of fire the Germans achieved in 1942 with the Mg42

 

[Kelpie]

The actual power source is pretty irrelevant. It's the transformer that supplies a very high voltage and, importantly, a very very low current (unless you're actually planning on killing someone?). I've grown up around electric fences fed from car batteries and you don't want to touch one of them if you can possibly avoid it.

If the OP was to set one of these up around his boat, how would he turn it on or off?
Also, it would be hard to conceal that you had something dodgy going on- the guard wires would need to be insulated from the stanchions, and you would have jumper leads everywhere to connect everything up. And then the n'er-do-well could probably climb over the pushpit anyway.

 

[Leighb]

The actual power source is pretty irrelevant. It's the transformer that supplies a very high voltage and, importantly, a very very low current (unless you're actually planning on killing someone?). I've grown up around electric fences fed from car batteries and you don't want to touch one of them if you can possibly avoid it.

I also grew up around cattle fences. My best mate and I used to dare each other as to how long we could hold on to them. The fact is that if you approach the wire gingerly you get a big belt with a spark, however if you just grab it, you feel a jolt and each pulse after that is tolerable, the time you can hold on is only limited by boredom.

An intruder touching one unexpectedly would no doubt jump and maybe shout out, but they would not be greatly deterred if intent on invading your boat.

 

[Graham_Wright]

I thought I might try motoring away from my pursuers trailing a substantial petrol slick behind.

Then discharging a flare into it when the target was in position.

At an exhibition I saw a canon propelled net intended to ensnare a propeller. Seemed like a good idea.