Imes Group Ltd. The Imes Group Limited is a privately owned Group of specialized engineering companies servicing, among others, the Offshore, Marine, Construction, Power Generation and Defense industries world-wide. The main operating subsidiaries are Industrial and Marine Engineering Services Limited (Imes Ltd), its Water Weights trading division and Water Weights Inc., based in the USA. Products include WATER WEIGHTS water filled proof load test bag, Anchor Line Monitoring Systems and varied FPSO riser installation monitoring and data logging equipment.