초록 ▼

A method of constructing SPAR buoys comprising an elongate floating body (1) and a deck structure (2). The elongate body (1) is transported to the mooring site in its horizontal position. During erecting of the floating body (1) by ballasting it with water and alignment with the deck structure (2),

A method of constructing SPAR buoys comprising an elongate floating body (1) and a deck structure (2). The elongate body (1) is transported to the mooring site in its horizontal position. During erecting of the floating body (1) by ballasting it with water and alignment with the deck structure (2), the deck structure (2) remains attached to its buoyancy member (7). Hereby the use of large derricks can be avoided which provides a substantial cost reduction. After erecting the floating body, the body (1) may be ballasted to pass below the floating deck structure (2). Alternatively, the deck structure (2) may be deballasted or pulling cables (14) may be used to pull the coupling member (4) of the floating body (1) into contact with the coupling member (12) of the deck construction. Alternatively, the floating body (1) is at its upper ends connected to the deck structure (2) via a pivoting connection (22) such that during coupling the floating body may be hinged against the deck structure (2).

대표청구항 ▼

1. Method of constructing a floating structure comprising an elongate floating body (1) and a deck structure (2) connected to the upper end (3) of the floating body (1) comprising the steps of:providing the elongate body, providing the deck structure, wherein the deck structure and the elongate body

1. Method of constructing a floating structure comprising an elongate floating body (1) and a deck structure (2) connected to the upper end (3) of the floating body (1) comprising the steps of:providing the elongate body, providing the deck structure, wherein the deck structure and the elongate body are each provided with coupling means (4, 12) for connecting the elongate body and the deck structure, transporting the elongate body to its mooring site, transporting the deck structure on a buoyancy member to the mooring site, ballasting the elongate body such that it is in its vertically upright position, positioning the elongate body below the deck structure, and raising the elongate body by deballasting it, wherein the elongate body comprises an elongate buoy for oil production and storage and comprising storage and ballast tanks, and having at its bottom ballast material (6) which is retained upon placing the buoy in its upright position, the deck structure and the elongate body during transport being coupled via control lines (15), the control lines (15) being connected between the deck structure (2) and the floating body (1) for control of the ballasting of the elongate body by supply or removal of water to the ballast tanks during transportation of the elongate body, erection and operation, the control lines (15) remaining attached between the deck and body after erecting of the elongate body, the elongate body being free from external buoyancy members prior to erecting said body.