Mariner hatch covers are available in many different versions. Electro hydraulic driven type covers mainly as Folding type, Multi Folding type, single panel Pivoting type, Piggy Back type. Other group is the lift away Pontoon type hatch covers operated by shore cranes, ship’s gantry crane or the ship’s cargo cranes. Covers can be arranged as open bottom, closed bottom or insulated type. Mariner also delivers the key components such as; rubber seals, cleats, cylinders, power pack units and more.