14b 



Surface pasiiionr.iiig system 



(hifix.puJse S.syledis. ) 



Dynamically positionned 

 mothership 



Short base underwater navigation system 



/Umbilical 





r^m 



FIGURE 5.2 MAJOR COMPONENTS OF THE INTERSUB PIPELINE SURVEYING SYSTEM 



(Courtesy of Intersub, Marseilles) 



