Riser Turret Mooring

The Riser Turret Mooring (RTM) system comprises two main components: a disconnectable riser column and a fixed arm, which is attached outside the bow of the tanker.

The riser column is fixed to the seabed by catenary anchor legs, supports the fluid risers, and is connected by means of a structural connector to the fixed arm. The fixed arm is located on the bow of the tanker and contains the weather-vaning bearing, reconnection winch, flow lines, control manifolds and fluid swivels.
Disconnection is achieved automatically in two stages; first, the fluid risers are isolated, then the riser column is disengaged utilizing large hydraulically operated collet-type connectors.

When disconnected, the disconnectable riser column remains floating on location and the tanker sails away.