A floating marine platform and a method for manufacturing a floating marine platform by means of templates are provided. The floating marine platform comprises a central column, multiple peripheral columns circumferentially around the central column, and radially extending outriggers from the central column that connect the peripheral columns with the central column. The templates comprise an inner outrigger template, an outer outrigger template, a central column template and a peripheral column template. On a first location under a first temperature a first pair with the inner outrigger template and the central column template is formed, and on a second location under a second temperature a second pair with the outer outrigger template and the peripheral column template is formed. Subsequently the central column, the peripheral columns and the outriggers are formed by means of the templates, under different temperatures.

A floating territory is made of at least two floatable building components having the shape of a prism with a regular polygon base, such as a triangle, a square, a pentagon, a hexagon, etc. combined with sliding dovetails and dovetail grooves for sliding attachment to neighboring construction elements. The attachments allow the floatable building components to slide vertically relative to each other, thereby permitting the floating territory to follow the upward and downward movement of the waves. A method of converting floating ocean waste into structures, in particular, floating territories is also provided.

A floating territory is made of at least two floatable building components having the shape of a prism with a regular polygon base, such as a triangle, a square, a pentagon, a hexagon, etc. combined with sliding dovetails and dovetail grooves for sliding attachment to neighboring construction elements. The attachments allow the floatable building components to slide vertically relative to each other, thereby permitting the floating territory to follow the upward and downward movement of the waves. A method of converting floating ocean waste into structures, in particular, floating territories is also provided.

A hull-mounted installation conversion method in which some or all of first-use units placed on a hull and constituting a first-use installation are removed from the hull, and then second-use units are placed on the hull to construct a second-use installation. For example, the first-use units are medical units, and the first-use installation is a medical installation. Alternatively, the second-use units are medical units, and the second-use installation is a medical installation.

A hull-mounted installation conversion method in which some or all of first-use units placed on a hull and constituting a first-use installation are removed from the hull, and then second-use units are placed on the hull to construct a second-use installation. For example, the first-use units are medical units, and the first-use installation is a medical installation. Alternatively, the second-use units are medical units, and the second-use installation is a medical installation.