A marine installation comprising a marine structure with one or more legs, a device for securing a connection to be formed between said one or more legs and a pile of a fundament fastened in a seabed, wherein the connection comprising the one or more legs partly inserted into an opening of the pile, wherein the device is configured to be connected to said one or more legs, the device comprising a sleeve element configured, together with the one or more legs of the marine structure, to be brought to vicinity of an upper portion of the pile, and a clamping arrangement attached to the sleeve element comprising at least one clamping device configured to form an attachment between the sleeve element and the upper portion of the pile wherein the at least one clamping device comprises a clamp mechanism comprising:
- a displaceable wedge configured to form a wedged engagement with the upper portion of the pile;
- and a setting member configured to act on the displaceable wedge for forming the attachment between the sleeve element and the upper portion of the pile, wherein the setting member comprises an axially displaceable bolt that is configured to act on the displaceable wedge so that the displaceable wedge is displaced into engagement with an envelope surface of the pile, wherein the device is attached to said one or more legs of the marine structure and a pile of a fundament fastened in a seabed, wherein the at least one clamping device has formed an attachment between the sleeve element and a top portion of the pile.