Seabed base structure and method for installation of same

A floatable and removable seabed base structure (10) for storing and loading or unloading hydrocarbons and intended to be supported by a seabed (30), the seabed base structure (10) comprising a beam structure (11) provided with an upwards extending wall structure (22) arranged along at least a part of the periphery of the seabed base structure (10),

• the seabed base structure (10) having an opening (23) in the upwards extending wall structure (22) for allowing a floatable module to be berthed in and supported by the seabed base structure (10),
• the seabed base structure (10) having a plurality of strong points (24) each configured to receive the end of a preinstalled vertical pile (14) for at least temporary support of the seabed base structure (10) during a piling operation for permanent piling of the seabed base structure (10) to the sea bed (30),
• the plurality of strong points (24) extending laterally outwards from the upwards extending wall structure (22), wherein the plurality of strong points (24) are arranged spaced apart from one another longitudinally across a length of the upwards extending wall structure (22) and away from adjacent corners of the upwards extending wall structure (22).