For nearly 40 years, John Gjerde As, has designed, manufactured and marketed hiqh quality tank venting equipment for the shipbuilding industry. Meeting customer needs for tank venting equipment, has been the objective at John Gjerde AS, ever since the company was founded. The company continues to fulfill its commitments towards the shipbuilding industry; making sure the equipment create the highest levels of safety for tank venting, and thereby for ships and their crew.