The first work in Spain on to measure berthed vessels’ movement on a real scale using GPS-IMU in Punta Langosteira (A Coruña Outer Harbour). The same project was carried out in 2015, on the Cepsa jetty at the Port of Algeciras. Siport21 developed the measuring instrumentation and methodology, which enabled the dynamic response of 13 vessels to waves and the prevailing wind to be compared for more than 1500 hours.