Unmanned surface vehicle Piraya
Encyclopedia
Piraya (Swedish for piranha
Piranha
A piranha or piraña is a member of family Characidae in order Characiformes, an omnivorous freshwater fish that inhabits South American rivers. In Venezuela, they are called caribes...

) is the name of an unmanned surface vehicle
Unmanned surface vehicle
The term unmanned surface vehicle or autonomous surface vehicle refers to any vehicle that operates on the surface of the water without a crew. USVs have been tested since World War II but have been largely overshadowed. This is due to the fact the USVs, such as the OWL Mk II surveillance drone,...

 project under development by the Swedish shipyard company Kockums AB in collaboration with the Swedish military.
The project is a small size boat with a 20 horsepower
Horsepower
Horsepower is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.Horsepower was originally defined to compare the output of steam engines with the power of draft horses in continuous operation. The unit was widely adopted to measure the...

 engine that runs without a human crew. The biggest difference between the Piraya and other unmanned surface vehicles is that several Pirayas can be operated at the same time by a single person. The vehicle has stealth
Stealth ship
A stealth ship is a ship which employs stealth technology construction techniques in an effort to ensure that it is harder to detect by one or more of radar, visual, sonar, and infrared methods...

 capability just like the larger Visby class corvette
Visby class corvette
The Visby is the latest class of corvette to be adopted by the Royal Swedish Navy after the Göteborg and the Stockholm class corvettes. The ship's design heavily emphasizes "low visibility" or stealth technology. The first ship in the class is named after Visby, the main city on the island of Gotland...

s.
The vessels will be equipped with infrared sensors and hydrophones.

By October 2009, 3 boats were in testing with one more on the way.

Similar ships

  • Protector USV
  • Spartan Scout
    Spartan Scout
    The Spartan Scout is a crewless surface watercraft, also known as an unmanned surface vehicle developed by the United States in 2001, and first demonstrated in late 2003. The craft, a rigid hull inflatable boat, weighs two tons, and is seven meters in length...



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