The Sustainable Energy Authority of Ireland (SEAI) has funded the deployment of a Floating LiDAR System (FLS) at the Atlantic Marine Energy Test Site. In July 2025 Green Rebel successfully deployed the FLS at site A, where it will remain for up to three years. The FLS is equipped with a range of sensors that measure parameters associated with wind, current, waves etc. Green Rebel are responsible for the installation, operation, maintenance, data collection, telemetry and subsequent decommissioning of the FLS and provide SEAI with the data collected. On behalf of SEAI, the Marine Institute hosts, preserves and serves the data as part of the existing Master Service Agreement. This dataset comprises of measurements taken by a Datawell directional waverider buoy, measuring wave height (significant and maximum), wave period (peak and mean spectral), wave direction and GNSS coordinate. S/N = 62100 Data is collected on a daily basis by Green Rebel and submitted through quality control checks, including: Instrument level filtering, Consistency checks, Data and system availability assessments, Common time stamping and synchronisation, and FLS structure impacts removal. Data is then averaged at 30-minute intervals for reporting purposes.