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Abstract Offshore drilling rigs, ranging from fixed platforms to drilling ships, typically involve drilling multiple wells close to each other in areas surrounded by large metal structures. Magnetic surveying tools cannot produce valid surveys due to magnetic interference, while traditional gyrocompass surveys are negatively affected by sea movement and require complex and time-consuming operations in rough conditions. These factors create significant challenges for kicking off wells safely without blocking the path of future wells. A new survey method, called Dynamic Gyrocompass (DGC), was deployed on a North Sea platform in the UK sector. Although this platform is supported by steel jacket foundations, the movement of the drill string generated by currents in open sea typically precludes the use of gyro-while-drilling tools. Instead, the use of wireline gyros aligned to external references, such as scoping to a fixed point on the platform, is necessary. Utilizing solid-state gyroscopic technology, and as part of a gyro-while-drilling tool, this new advanced survey method operates effectively under dynamic conditions, and it sends the data to the surface via MWD telemetry. The method involves the acquisition of high-frequency accelerometer data to determine the magnitude and direction of movement generated by the sea, a filtering and physics model, and the compensation for movement of the gyroscopic data measuring the Earth's rotation rate. For this platform, the 17.5″ pilot hole section had typically been drilled with 20-24 wireline scoping surveys - each taking up to 60 minutes. With mudline at 218.95m, the expectation was to switch from scoping surveys to Gyrocompass surveys at a depth of 280m. The scoping tool would then be run for a further 3 surveys as a precaution in case Gyrocompass surveys shots were to fail the quality control. DGC replaced the wireline scoping runs as the primary method for wellbore surveying and scoping tool was used for confirmation of gyro toolface. Three separate wireline runs were performed, comparing results to DGC at 7 different points throughout the section. These checks confirm agreement well within the expectations of the survey mode uncertainty models. The section was completed using the new DGC mode and the operator has decided to eliminate the wireline scoping runs for future wells. In this paper we describe the principles of the new survey mode, DGC. We describe the testing and validation process and the comparison to proven survey methods. DGC is based on a gyroscopic tool, integrated into the drilling BHA, is capable of removing environmental movement from the gyro measurements and produces reliable directional values. It offers reduced positional uncertainty compared to wireline runs, has a robust quality control, and can be operated remotely. This results in significant operating rig time savings and safer operations, without personnel in the red zone operating wireline tools