Hull-mounted installation conversion method

A hull-mounted installation conversion method comprising:

• removing some or all of first-use units from a hull, the first-use units being placed on the hull and constituting a first-use installation;
• and
• placing second-use units on the hull to construct a second-use installation after the removing of the first-use units, wherein
• the first-use units include first unit-side connectors, respectively, each of the first unit-side connectors including an interface for an infrastructure required by a corresponding one of the first-use units,
• the second-use units include second unit-side connectors, respectively, each of the second unit-side connectors including an interface for an infrastructure required by a corresponding one of the second-use units,
• the hull includes first hull-side connectors connectable to the first unit-side connectors, respectively, and second hull-side connectors connectable to the second unit-side connectors, respectively,
• the first-use units are classified into different types,
• each of the first-use units is a container including an internal configuration corresponding to the type of the first-use unit,
• the first unit-side connector of each of the first-use units is at a location on a bottom surface of the first-use unit,
• the location of the first unit-side connector differs according to the type of the first-use unit, and
• the method further comprises connecting each type of the first-use units to the hull by aligning each respective first unit-side connector, located at a type-specific position on the bottom surface, with a matching location of only one of the first hull-side connectors in a distinct region, thereby establishing type-specific infrastructure connection based on positions of the respective first unit-side connectors relative to the first hull-side connectors.