Welcome to Mackellar Engineering Welcome to Mackellar Engineering Ltd. We are an innovative engineering and manufacturing company employing 100 people based in the North and North East of Scotland. Predominantly we specialise in the design, manufacture and assembly of Subsea structures and equipment for the Oil and Gas Industry on a Global basis. Within the Subsea industry we are recognised as leading suppliers due to our commitment, innovation and capabilities. We have also designed and manufactured projects for topside including DNV 2.7-1 transportation skids for applications diverse as tooling through to multi-million pound gas turbines. We also continue to develop new products including yacht berthing and run of the river hydro generation equipment. Our reputation at Mackellar Engineering is as problem solvers regardless of discipline. With in-house design, fabrication and machining facilities we have the ability to "Engineer in Quality".