Union de Remorquage et de Sauvetage S.A., also called Towage & Salvage Union Ltd., arose from the 1928 alliance. The constituent concerns retained separate identities until their full amalgamation in 1974. URS subsequently took control of other Scheldt operators, including Willem Muller and Scheldt Towage. Rosanoski tentatively identifies these as Willem Muller Sleepdienst (Belgie) N.V. and N.V. Scheldte Towage Co. S.A. Lloyd’s recorded CMB control in 1998–2000 and Alphonse Letzer as operator of part of the fleet in 1978–1979.