Cone penetration tests (CPT) are used in geotechnical engineering. The test involves pushing a cone-shaped probe into the seabed. As the cone penetrates the sediment, it records data on cone resistance, sleeve friction, and pore water pressure. This layer shows the places where one or several CPT tests have been performed. The layer contains information on how to obtain the CPT measurement data. In some cases, data can be downloaded directly from this website. In other cases, you must navigate to the custodian’s website or contact the custodian in another way to get the data.