Portuguese grab hopper dredger MADALENA, imo 5216525/ 72,18m/ 1.198gt/ 12kn; 02/11/1950 completed by Grangemouth Dockyard Co., Ltd., Grangemouth, for EIN-Empresa Insulana de Navegação, Lisbon; 1974 MADALENA, CTM-Companhia Portuguesa de Transportes Marítimos, Lisbon, due amalgamation of Insulana and
