Sems designs all sorts of shell doors, including:
- embarkation side doors
- provision side doors
- crew entrance side doors
- service side doors
- containers, cars and boats garage side doors
- tender embarkation platforms
Side doors with single or double leaf door, hinged with opening inward or outward or side doors with pantograph hinges, outward opening.
The rotational movement can be obtained by means of hydraulic cylinders or electrical actuators.