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, which shows marine CPT sites as points, 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.