Leave D1032/N32 at exit "Thourotte/Longueil-Annel, Mélicocq" , go down to the roundabout on the "old RN32" and make a right turn towards Longueil-Annel and Compiègne (on the Av. de la Libération.) After 1 km, make a right turn at the traffic light: Arwen Marine is on the right after 150m, at number 186 on the rue Bernard Bordier, at the far end of the building (white building with a red roof).