Platform for floating type offshore structure having protrusion member and semi-submersible offshore structure including the same

A semi-submersible offshore structure comprising a platform for a floating type offshore structure having a protrusion member comprising:

• a main body which is installed on the sea and has an arrangement structure in which a plurality of pontoons is combined to form a plurality of polygonal shapes;
• a protrusion member on which a tower is installed;
• and
• a protrusion member connecting unit which extends from each corner of the main body and connects the protrusion member to the main body,
• wherein the protrusion member protrudes outwardly from the main body and is located at an end of the protrusion member connecting unit,
• wherein the protrusion member connecting unit is formed to outwardly protrude with respect to a center of the main body and an extending length direction of the protrusion member connecting unit intersects the center of the main body,
• wherein a mooring line fastening unit for connecting a mooring line is installed at a side pontoon of the main body,
• wherein the mooring line fastening units are installed on both sides of the corner, and
• wherein the mooring line fastening units are disposed to be symmetrical to each other with respect to the extending length direction of the protrusion member connecting unit.

A platform for a floating type offshore structure, comprising:

• a main body which is installed on the sea and has an arrangement structure in which a plurality of pontoons is combined to form a plurality of polygonal shapes;
• a protrusion member on which a tower is installed;
• a protrusion member connecting unit which extends from each corner of the main body and connects the protrusion member to the main body,
• wherein the protrusion member protrudes outwardly from the main body and is located at an end of the protrusion member connecting unit, and
• wherein the main body includes an upper horizontal connecting unit and a lower horizontal connecting unit which have an arrangement structure in which the plurality of pontoons is coupled in a horizontal direction and spaced apart from each other to be parallel, and a vertical connecting unit which is disposed between the upper horizontal connecting unit and the lower horizontal connecting unit to be perpendicular thereto;
• and
• a protrusion member reinforcing unit which connects a side pontoon of the main body and the protrusion member and extends from the vertical connecting unit of the main body to be inclined,
• wherein the protrusion member reinforcing unit is formed to be downwardly inclined from an upper portion of the vertical connecting unit of the main body.