superstructure
thumb|The superstructure of this cargo ship is at the back and includes a Lifeboat (shipboard)|lifeboat. right|thumb|The cruiseferry Mega Smeralda. The blue and white part of the ship is the superstructure and the yellow part of the ship is the hull.
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- {{anchor|Ships}}Aboard ships and large boats
- Bridges
- Earthquake protection
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thumb|The superstructure of this cargo ship is at the back and includes a Lifeboat (shipboard)|lifeboat. right|thumb|The cruiseferry Mega Smeralda. The blue and white part of the ship is the superstructure and the yellow part of the ship is the hull.
Superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships.