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did you do the project?

@@allenjoseph3147 similar to this

150 psi or 120 foot riser head of water

A fire engines 5000 gpm/150psi turbo waterpump driven by at least a 450 HP diesel engine by the looks of it, assuming it's an 8 inch diameter monitor

First, try launching a grenade when your skiff is bouncing up and down in the sea and being hit by tons of water per minute. Second, if you are successful, the water cannon can suppress the fire caused by the attack. Would you prefer that the ship burn and have no chance to defend yourself?

Absolutely! These serve not only to protect against hijackers and pirates, but also against fire.

Virtually impossible from an attacking, bouncing skiff on the high seas while trying to attack and board a ship. Moreover, there are multiple water cannons. Good luck!

See the comment above.

Perhaps, if you are willing 1) to actually kill people, and 2) you are willing to arm the ship despite legal prohibitions in many territorial waters, and 3) you are willing to spend about $10,000 per voyage for armed guards. This system, however, can be legally mounted world-wide, can dump up to 5 tons of water per minute into a pirate's skiff (boat), blow them off the deck if they manage to get that far, and put out fires on the ship if any are caused by the pirates' attack, and, it saves lives, hopefully. It is true that many ship operators opt for the guns, but many choose this method as superior and preferable for a number of reasons.

Fun until you get hit, that is.

Not true. Imagine you are a pirate in the choppy water approaching a ship to attack it, bouncing up and down in the skiff, heart racing, 100 meters out. Do you really think you can shoot a tiny motor? No way! Moreover, the system can dump up to 83 kilos (liters) of sea water per second into your skiff, which will slow you down in a heart beat, allowing the victim ship to get away. If you haven't tried it already, go to your fire department and ask if you can please stand in front of a water cannon while they shoot at you, and you can even ask if you may try to shoot its motor. See what happens.

That thing would mess someone up pretty badly :-) I don't imagine those little skiffs can bail out 5000 liters per minute can they? This system would be perfect to use against greenpeace :-)

Actually, yes! These robotic nozzles are also used for firefighting around the world. So the system not only provides humane, effective, non-lethal defense, but also serves to fight fires on the ship or other ships in trouble.

Good question. The water cannons are placed around the ship, about 75-100 meters apart, covering all vulnerable sides of the ship where a pirate might be able to mount the ship. You can operate as many water cannons simultaneously as you want.

Very true. But carrying arms and weapons on ships is illegal in many territorial waters, and having a crew for shooting would-be pirates at sea is not only risky but also about $10K a pop. The water cannons can dump up to 5 tons of water into a pirate's skiff per minute, filling it with water and making the pirate's boat extremely slow, allowing the victim ship to get away. Protecting yourself without killing is, of course, the best strategy. Many comments advocate killing - but this is just cheap talk. In real life, everyone wants to live and nobody actually wants to kill anyone.

A couple of crew with guns cannot be everywhere. And as soon as they are taken out or frightened away with bullets flying their way, Pirates have the upper hand. This system means the whole ship can be covered by one guy, who is safe;y tucked away. Multi billion dollar industry chooses this method for a reason. It works, reduces risk to crew, and is in the long term much cheaper.

8 years later, did she shut up?

@@vegardstenberg2015 Wondering the same thing man