The International Marine Contractors Association (IMCA) has updated its Guidance on Subsea Metrology to cater for recent developments in subsea metrology procedures, which are providing the offshore sector with increasingly accurate measuring solutions.
Traditionally, subsea metrology just used a diver with a tape measure working from flange to flange. However, increasing requirements for greater accuracy and tighter construction tolerances for deep water field developments, combined with the limitations on depth experienced by divers, have brought about alternative and higher accuracy subsea metrology methods.
“IMCA’s revised document provides guidance on commonly used subsea metrology techniques deployed today, such as long baseline acoustics,” explains Richard Benzie, IMCA’s Technical Director.
“And now, because of the pace of technical change and ongoing development of deep water fields, it also includes other subsea metrology methods such as photogrammetric metrology, INS metrology, SLAM techniques and laser scanning.”
Information on IMCA and its work on behalf of the offshore marine construction industry is available from www.imca-int.com and .