Slow slip events have been identified as an important strain process for Kilauea’s south flank, yet as the current, land-based, geodetic network provides too little information, their role is poorly understood. We propose to deploy a network of absolute pressure gauges on the submarine south flank of Kilauea. Each gauge will be mounted on an ocean-bottom seismometer, enabling measurements of the vertical motion of the seafloor produced by slow slip events and capturing any associated seismic activity. The pressure data will provide the first accurate measurements of the offshore slip history, slip distribution, and updip/downdip propagation speed for slow slip events at Kilauea. Together with the seismometer data we will be able to accurately constrain the geometry of the slipping portion of the fault for the first time, allowing an assessment of the rheology of the fault plane and improved understanding of the role slow slip events play in transferring stresses within the wedge and their implications for seismic and tsunami hazards.