An IHO ECDIS Stakeholders' Forum will be held in conjunction with the 11th Meeting of the IHO Committee on the Worldwide ENC Database (WEND) in September 2008. The ECDIS Stakeholders' Forum will enable discussion and feedback on the development of ECDIS, ENCs and associated technology. The meeting is open to all those with a professional interest in ECDIS.
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.
