Through the years, Naval Office Herman Jansen made various ship types, in particular, the commercial fishing. The biggest success was the type called "Concorde". This is a design for fishing vessels of 40-45 meters, which originally were engaged in beam trawling. This type of vessel has over the years delivered to various shipping companies from home and abroad which practiced beam trawling. The construction of the design has come down on behalf of various renowned Dutch shipyards.