Sarah Delivered24/12/2009 |
| Yard number 283 Sarah, type Ulstein SX121 Offshore Construction Vessel, was delivered to Marine Subsea 16th December. The vessel has been designed and constructed by Ulstein Group. The Ulstein SX121 offshore construction vessel features the characteristic Ulstein X-BOW, enabling her to operate under all weather conditions while remaining steady and comfortable for the crew. |
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Read more about: ROV Offshore vessel Construction Supplier: Ulstein Group More news from this supplier: Twentieth X-Bow Ready to Sail Polarcus to Build Arctic Seismic Vessels WG Cook Delivered Seismic Research Vessel Oceanic Vega Delivered Deepwater Repair Vessel Launch Polarcus Asima Named Pipelay Vessel DP2 Prepared Ulstein Sea Of Solutions Wins Industrial Marketing Award 2008 Ulstein And Sea of Solutions Cluster Collaboration ROV Survey of the Costa Concordia Grounding Site (video) 44 PMGS Transponders for Earthquake and Tsunami Research Underwater Vision to Fugro Subsea Services Award for Brazilian Hydrographic Paper Demonstrating a 'Deeper Understanding' First Real-Time Seafloor Earthquake Observatory Theme of Hydrography Day 2012: International Cooperation Finistère and Mediterranean Bathymetric Lidar Surveys Precise Positioning For BP Vessels DP Inertial Navigation System for Drillship 
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Hydrographic Survey of Riverbed Erosion |
Members of the US Geological Survey were filmed while out on the Missouri River at Williston, North Dakota, USA, performing a hydrographic survey to monitor the state of riverbed erosion. They were using a multibeam echo sounder which transmits sound energy and analyses the return signal (echo) that has bounced off the riverbed or other objects. Multibeam sonars emit sound waves from directly beneath a ship's hull to produce fan-shaped coverage of the riverbed.
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