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Surface Forces: The Fastest Thing On Water With A Machine-Gun
   Next Article → SUBMARINES: The Long Voyage Home

September 11, 2009: A British firm has developed a high speed patrol boat, built to overtake the fastest things currently on water. The XSR is basically a aerodynamically shaped speed boat that can make over 150 kilometers an hour. There are two versions. One is 14.6 meters (45 feet) long, and has a top speed of 120 kilometers an hour. The 19 meter (59 foot) one can hit 150 kilometers an hour. The smaller version has a crew of four, and space for 14 passengers. The larger one has a crew of seven, four bunks and can carry 26 passengers. The larger boat can travel 1,800 kilometers (at a cruise speed of about 90 kilometers an hour), and carry sufficient water and fuel for 48 hours at sea per sortie. Both versions have a toilet, small galley and a .50 caliber (12.7mm) machine-gun that is normally inside the hull. But when deployed, this machine-gun is controlled remotely from within the cabin, using night vision and a laser range finder to assist firing the weapon). A rear deck enables crew to use other weapons as well. The topside structure contains Kevlar, to provide protection from small arms fire. In all, the XSR can carry about a ton of weapons and half a ton of other stores. The XSR 14 costs about $2.2 million. The XSR 19 costs about half a million dollars more.

The XSR 14 has a civilian counterpart, sold as a luxury power boat. A hot rod of the sea for someone who can afford to spend nearly three million dollars on a high seas hotrod. And if they could, the boat can't outrun 12.7mm bullets.

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YelliChink       9/11/2009 10:54:41 AM
And, by comparison, a medium size helicopter costs roughly the same.
 
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flamingknives       9/11/2009 4:38:18 PM
Which helicopters have an endurance of 48 hours though?
 
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YelliChink       9/11/2009 6:08:24 PM

Which helicopters have an endurance of 48 hours though?


The boat doesn't have 48 hour endurance when traveling at full speed, and it doens't travel at full speed on rough sea.
 
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Paul_In_Houston       9/12/2009 10:49:38 AM
The boat doesn't have 48 hour endurance when traveling at full speed, and it doesn't travel at full speed on rough sea.
 
Valid point. 
But a boat can loiter for a long time by just shutting off the engines.
Trying that with a helicopter presents certain problems. :-)
 
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flamingknives       9/12/2009 11:20:12 AM
Helicopter endurance is also affected by using high speed or inclement weather.
 
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YelliChink       9/12/2009 3:02:52 PM

Helicopter endurance is also affected by using high speed or inclement weather.


Yeah, but you seldom hear about people puking here and there in a helicopter.
 
Also, if you want endurance and range, why not build a patrol ship with helipad and a hanger?
 
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gf0012-aust       9/12/2009 4:51:11 PM

Also, if you want endurance and range, why not build a patrol ship with helipad and a hanger?

its all about mission set.  in some instances it's a whole lot better to do insertions by skimmer than by air.  there's more flexibility from a launch and delivery issue (eg they can be side launched from existing cruiseliners with port/starboard bays - and a few have this facility with the rise of piracy)

using helos means that there is a degree of predictive range established - and launch stats can be formulated.

lag/loiter and flexibility are some pretty significant opportunities.  
 
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YelliChink       9/12/2009 5:50:23 PM


its all about mission set.  in some instances it's a whole lot better to do insertions by skimmer than by air.  there's more flexibility from a launch and delivery issue (eg they can be side launched from existing cruiseliners with port/starboard bays - and a few have this facility with the rise of piracy)




using helos means that there is a degree of predictive range established - and launch stats can be formulated.




lag/loiter and flexibility are some pretty significant opportunities.  


http://i.telegraph.co.uk/telegraph/multimedia/archive/01476/boat_1476142c.jpg" width="460" height="288" />
 
You might try loitering in one of these.
>>
 
 
 
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