Unmanned surface vehicle
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Unmanned surface vehicles (USV) or autonomous surface vehicles (ASV) are vehicles that operate on the surface of the water (watercraft) without a crew.
USVs are valuable in oceanography, as they are more capable than moored or drifting weather buoys, but far cheaper than the equivalent weather ships and research vessels, and more flexible than commercial-ship contributions. Wave gliders, in particular, harness wave energy for primary propulsion and, with solar cells to power their electronics, have months of marine persistence for both academic  and naval applications.
Powered USVs are popular for use in hydrographic survey. Using a small USV in parallel to traditional survey vessels as a 'force-multiplier' can double survey coverage and reduce time on-site. This method was used for a survey carried out in the Bering Sea, off Alaska; the ASV Global 'C-Worker 5' autonomous surface vehicle (ASV) collected 2,275 nautical miles of survey, 44% of the project total. This was a first for the survey industry and resulted in a saving of 25 days at sea.
Specific craft or class:
- C-Cat 3
- C-Worker 4
- C-Worker 5
- C-Worker 6
- C-Worker 7
- C-Worker 8
- C-Target 1
- Marine Target Drones
- USV RSV (Marine Tech) 
- USV Bonefish 
- Fleet-class USV
- Piranha Unmanned Surface Vessel
- Unmanned water vehicle Piraya
- Protector USV
- Scout (autonomous boat)
- Sea Hunter
- Silver Marlin
- Spartan Scout
- Springer USV 
- U-RANGER* USV 
|Wikimedia Commons has media related to Unmanned surface vehicle.|
- Stevens Institute of Technology student USV
- "Carbon Wave Glider". Retrieved 24 February 2016.
- "Robot Boats Survive Epic Voyage Across the Pacific — So Far". WIRED. 23 May 2012. Retrieved 24 February 2016.
- Autonomous Navigation and Obstacle Avoidance of Unmanned Vessels in Simulated Rough Sea States. 18 November 2011. Retrieved 24 February 2016 – via YouTube.
- "Robotica - An experimental setup for autonomous operation of surface vessels in rough seas - Cambridge Journals Online". Retrieved 24 February 2016.
- This story was written Amanda D. Stein; Naval Postgraduate School Public Affairs. "NPS Acquires Two USVs, Opens Sea Web Lab for Expanded Undersea Warfare Research". Retrieved 24 February 2016.
- "Information Dissemination: Eureka! Wave Glider". Retrieved 24 February 2016.
- http://fr.jpost.com/servlet/Satellite?cid=1254673318745&pagename=JPost/JPArticle/ShowFull Jerusalem Post, 4 Oct 2009
- "Unmanned Surface Vehicle RSV". Marine Tech. 10 January 2017. Retrieved 10 January 2017.
- SAAB & P.T Lundin Bonefish USV concept at Indodefence 2014. 19 November 2014. Retrieved 24 February 2016 – via YouTube.
- "Unmanned Surface Vessel". Saab Solutions. 10 February 2016. Retrieved 24 February 2016.
- "Steering a course for unmanned vessels". InDaily. Retrieved 24 February 2016.
- "Saab Bonefish proceeds apace - News - Shephard". Retrieved 24 February 2016.
- "Springer USV". Retrieved 24 February 2016.
- "Unmanned Surface Vehicles". Retrieved 24 February 2016.
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