In 1969 H.O.R.S. was established by the former “Stoomvaart Maatschappij ‘Nederland’” (S.M.N.), the “Hollandsche Stoomvaart Maatschappij” (H.S.M.) and the “Amsterdamsche Droogdok Maatschappij” (A.D.M.) shipyards. It was a continuation of the workshops of S.M.N. and H.S.M.
In March 1983 H.O.R.S. was assigned to the Deurholt group of companies by Royal Nedlloyd Group.