Aspects in vessel system offsets survey using 3-D laser scanning system

Abstract Recently, the shipbuilding industry has paid more attention to laser scanning technologies due to their ability to quickly and accurately provide and evaluate 3D data. This innovative solution brings benefits as it increases the accuracy of the ship construction and associated production information. This measure is even more advantageous because it significantly shortens the survey time when establishing the positions, and installation angles of mounted equipment and systems onboard ships. The paper describes a vessel system offsets survey that needs to ensure accurate locations and alignment of sensors and equipment on a new building ship before her sea trial. These include the physical vessel offsets and angular rotational offsets of mounted equipment such as GNSS antennae, wind sensors, MGC gyro compass units, range guard sensors, scene scan sensors, etc. The paper also mentions the construction of a reference coordinate system associated with the actual survey on a new building ship, the reference plane, reference points, and offset measurement results of the mounted equipment mentioned above. The measurement results and evaluation of measurement accuracy against the design values show that the application of laser scanners is worthwhile, especially in the shipbuilding industry.