Before revision: Offshore and Inshore Underwater Construction Starting in the 1970's and continuing to the present offshore and inshore construction, in particular related to the oil gas industry, became a major application for underwater positioning.Milne, Chapter 1 LBL system's combination of high positioning accuracy and pipeline's course, using the LBL system to record precise positions as it proceeded .
After revision: Offshore and Inshore Underwater Construction Starting in the 1970's and continuing to the present offshore and inshore construction, in particular related to the oil <gallery widths="300px" heights="200px">Image:AquaMap Submersible LBL Acoustic Positioning Equipment.jpg|Figure 4a: Submersible with an LBL positioning system including baseline transponders (B) and submersible mounted interrogator (A) .