- catenary anchor leg mooring(CALM): incorporates
a large buoy which remains on the surface at all times and is moored by 4 or more anchors.
Mooring hawsers and cargo hoses lead from a turntable on top of the buoy, so that the buoy
does not turn as the ship swings to wind and stream.
- single buoy mooring (SBM): a mooring structure
used by tankers to load and unload in port approaches or in offshore oil and gas fields.
The size of the structure can vary between a large mooring buoy and a manned floating
structure. Also known as single point mooring (SPM) (IHO Dictionary, S-32, 4th Edition)