APM Terminals has selected spare parts and service specialist Portunus for the refurbishment of its N.4 quay cranes in Poti Port, Georgia, Port Strategy reports.Portunus will repair or replace all electrical engines, cable drums, electrical boxes, reducers, brakes and drums, wire drums, bogies, gears and all other main components. Portunus will also provide new control panels and modernise the crane systems.