Method for coupling an offshore structure to a hoisting block of a hoisting installation, comprising the steps of: - providing a coupling structure comprising the steps of: - providing said hoisting block with a first coupling part; and - providing said offshore structure with a second coupling part; wherein said first coupling part and said second coupling part are connectable to provide a coupling of said offshore structure to said hoisting block for hoisting said offshore structure by means of said hoisting installation; and - connecting said first coupling part to said second coupling part such that said offshore structure is coupled to said hoisting block; wherein the method further comprises the steps of: - providing a catching structure for catching at least one of said first coupling part and said second coupling part, said catching structure defining a catch area in which said catching structure is operative; - providing a positioning structure for positioning said first coupling part and said second coupling part relative to each other in a connecting position wherein said first coupling part and said second coupling part are connectable; - bringing at least one of the first coupling part and the second coupling part in the catch area; - catching the coupling part brought into the catch area by means of the catching structure; and - positioning the caught coupling part by means of the positioning structure in the connection position before connecting said first coupling part to said second coupling part; wherein the first coupling part is brought into the catch area, is caught, and is positioned in the connection position; wherein the first coupling part to be caught is brought in a catch position within the catch area, and is caught while in said catch position; and characterised in that the positioning of the caught first coupling part comprises the steps of: - engaging the caught first coupling part by.means of an engagement member (63, 65, 51) of the positioning structure; and - moving the caught first coupling part from the catch position towards the connection position by moving the engagement member. - providing a coupling structure comprising the steps of: - providing said hoisting block with a first coupling part; and - providing said offshore structure with a second coupling part; wherein said first coupling part and said second coupling part are connectable to provide a coupling of said offshore structure to said hoisting block for hoisting said offshore structure by means of said hoisting installation; - connecting said first coupling part to said second coupling part such that said offshore structure is coupled to said hoisting block; wherein the method further comprises the steps of: - providing a catching structure for catching at least one of said first coupling part and said second coupling part, said catching structure defining a catch area in which said catching structure is operative; - providing a positioning structure for positioning said first coupling part and said second coupling part relative to each other in a connecting position wherein said first coupling part and said second coupling part are connectable; - bringing at least one of the first coupling part and the second coupling part in the catch area; - catching the coupling part brought into the catch area by means of the catching structure; and - positioning the caught coupling part by means of the positioning structure in the connection position before connecting said first coupling part to said second coupling part; wherein the first coupling part is brought into the catch area, is caught, and is positioned in the connection position; wherein the first coupling part to be caught is brought in a catch position within the catch area, and is caught while in said catch position; and characterised in that the positioning of the caught first coupling part comprises the steps of: - engaging the caught first coupling part by.means of an engagement member (63, 65, 51) of the positioning structure; and - moving the caught first coupling part from the catch position towards the connection position by moving the engagement member. - engaging the caught first coupling part by.means of an engagement member (63, 65, 51) of the positioning structure; and - moving the caught first coupling part from the catch position towards the connection position by moving the engagement member.