Survey and online positioning system recommendations for vessel downline operations within in-water assets
This document provides global common industry guidance and recommended practices to reduce the risk of a collision or entanglement between a vessel downline and in-water assets (e.g., mooring lines, risers, suspended lines, etc). This document discusses only the survey and software recommendations (including positioning) for surface vessels operating with downline(s) in the water column.
Document Type: Report
Report Number: 685
Document Tags: Geomatics
Published Date: 13 Nov 2025
Last Reviewed: 13 Nov 2025
Latest Version: 1.00