The SBM Group pioneered the concept of disconnectable turret mooring systems. This allows the exploitation of reserves in locations where severe weather conditions such as typhoons, hurricanes or ice packs, might threaten the safe operation of the facility.
Two basic concepts were developed:
The RTM Mooring System
The RTM system comprises a tanker or barge bow mounted riser turret, incorporating a rapid and independent disconnectable Riser Turret Mooring. The disconnection is achieved automatically in two stages; first the risers are isolated, then the riser column disengaged utilising large hydraulically operated collet-type connectors. After disconnection, the column remains on location and the tanker sails away.
The BTM Mooring System
The BTM system comprises an internal turret integrated into the forward end of a tanker or barge. The mooring buoy is connected to the turret structure by a large collet-type connector. The buoy is designed to have enough buoyancy to support the weight of the chain legs and risers. To reconnect, the mooring buoy is simply pulled up under the tanker using a wire rope hauled in on a drum winch.