LOW HEAVE SEMI-SUBMERSIBLE OFFSHORE STRUCTURE

摘要

A semi-submersible structure with buoyant vertical columns and a buoyant pontoon. Unlike the typical semi-submersible where the pontoons are attached directly between the columns, the pontoon of the invention encircles the columns and is arranged outside of the columns. The pontoon encircling the columns simplifies construction and attachment of the pontoon and columns and improves the heave characteristics of the structure.

主权项

1. A semi-submersible floating offshore structure, comprising:
a) a plurality of buoyant columns spaced apart from each other; b) a buoyant pontoon attached at lower ends of the plurality of buoyant columns by column-to-pontoon connectors, the buoyant pontoon having an inner perimeter encircling the plurality of buoyant columns, the inner perimeter of the buoyant pontoon arranged outside of an outer perimeter of the plurality of buoyant columns; and c) a topside attached to and supported at tops of the plurality of buoyant columns.