datum. The sensors and associated equipment used to make the 

 measurements should meet the accuracy requirements of the US ACE for 

 its dredging mission and conform as much as possible to the needs of other 

 agencies. There may well be several methods of acquiring reliable data. 

 We should always be cognizant of new developments in this field. 

 However, before introducing these procedures into the TCOON, reliability 

 and acceptability should be verified. 



44 Chapter 5 Consideration of an Expanded Network 



