A semi-submersible is a type of floating platform designed for offshore operations, such as drilling for oil and gas. It consists of a buoyant structure that is partially submerged in water, providing stability and reducing the impact of waves. This design allows it to remain steady in rough sea conditions, making it suitable for various marine activities. These platforms are typically anchored to the seabed and can support heavy equipment, including drilling rigs. Semi-submersibles are often used in deep-water environments where traditional platforms would be less effective, enhancing the efficiency of offshore exploration and production efforts.