The Ice Nucleating Particle (INP) concentrations have been measured on board RV Investigator during the Clean Ocean Air Sampling upwind of Tasmania–Kennaook (COAST-k) campaign from April 29th 2025 to May 18th 2025. The INP concentrations were measured using the Portable Ice Nucleation Experiment (PINE) and the Ice Nucleation Spectrometer of Karlsruhe Institute of Technology (INSEKT).