Surveying Undersea Highways

This article from the May 1963 edition of All Hands magazine describes how regular navy survey ships USS Maury (AGS-16) and USS Serrano (AGS-24) conducted surveys in the Gulf of Thailand. A field deployable Lorac radio navigator chain supplied control. 

In 1964 USNS Michelson used Lorac for position data while conducting seas trials in the Bahamas during the spring of 1964.
 
Note the UQN sonar used as depth recorder.