S.P.M (Single Point Mooring)......

Single point mooring means for mooring a ship that is carrying a liquefied gas; (1) means for offloading said liquefied gas into said regasification facilities; and (2) means for transferring gas from said regasification facilities to a gas transport pipeline.

Offshore facilities and methods are provided to enable the mooring of a ship carrying a liquefied gas to an offshore structure with one or more decks upon which are located (i) regasification facilities; (ii) single point mooring means for mooring a ship that is carrying a liquefied gas; (iii) means for offloading said liquefied gas into said regasification facilities; and (iv) means for transferring gas from said regasification facilities to a gas transport pipeline
It is also known as Single Buoy Mooring .Loading Buoys are anchored offshore and serve as a mooring point for tankers to (off) load gas or fluid products. They are the link between the geostatic subsea manifold connections and the weathervaning tanker. The main purpose of the buoy is to transfer fluids between onshore or offshore facilities and the moored tanker. The main purpose of the buoy is to transfer fluids between onshore or offshore facilities and the moored tanker.

These Buoys are generally referred to as Single Point Mooring systems or “SPMs”. They are also often referred to as Single Buoy Moorings or "SBMs". Buoy moorings normally offer a maximum of three main fluid paths.
The SPM is a floating buoy anchored at a depth of 30 meters for mooring large tankers and for receiving crude through floating hoses, under buoy hoses and the submarine pipeline to the shore tanks.