Jack-up platform comprising a deck structure and a single supporting column, and method for installing such jack-up platform

A method for installing a jack-up platform comprising a deck structure with buoyancy and a column with a base structure, in which a jack-up system acts on the column so as to be able to move and secure the deck structure and the column relative to each other, and the base structure comprises a base and at least three separate base supporting parts, wherein the deck structure, through at least one tensioning means starting from at least three spaced coupling places positioned on the deck structure and distanced from the column, can be connected with at least three mutually spaced connecting places on the base structure and on or near the at least three separate base supporting parts, the method comprising comprising:

• bringing the platform, floating in the water with a pulled-up column to a desired location where the column with its base supporting parts is brought into supporting contact with the floor under water;
• raising the deck structure along the column so as to be out of contact with the water, and the support of the base supporting parts on the floor is completed;
• vertically aligning the column, wherein each connecting place on or near the base supporting parts is connected by a tensioning means with at least one coupling place on the deck structure, the tensioning means are tensioned after raising the deck structure to working height, and the deck structure is secured relative to the column.