A surveyor was contracted to carry out a debris clearance survey, including a bathymetric sounding. This report was carried out and issued, but unfortunately, the depths on the report were not correct. The site was actually deeper than indicated. The principal, in reliance on this report, chartered in a barge to clear the site, but was unable to work due to the water depth being too great. A claim was made against the survey company for the cost of the barge.