 Rotterdamsche Droogdok Maatschappij (RDM) appointed PSC Naval Dockyard as their partner and ambitiously brought two former Royal Netherlands Navy submarines "Tijgerhaai" and "Zwaardvis" in anticipation of the Royal Malaysian Navy’s planned purchase of submarines.The two submarines were to have been refurbished and used as training submarines while the new submarines are built in the Netherlands.The submarines are owned by Rotterdamsche Droogdok Maatschappij, while PSC Naval Dockyard was to be the prime partner for the program.