The rotation of wind turbines, along with all rotary components and sources of vibrations within the drivetrain at the nacelle, generates vibrations through multiple excitation mechanisms. These vibrations are transmitted through the tower to the ocean, producing noise. This noise spans a wide frequency range, from a few hertz to several kilohertz, and significantly overlaps with the hearing ranges of various marine species. Although such operational noise may not cause physical harm to organs, it can lead to changes in behavioral responses, migration patterns, and predator-prey relationships among others. In this presentation, I will outline the measurements taken in close proximity to the Hywind Tampen floating wind park and explain how the source level can be estimated. This will primarily cover the introduction of the measurements, with more detailed analyses to follow.