Standby Semi,s are mainly used as Accommodation platform during a Hookup of a production facility, all kind of equipment are mounted into this semi ,comprising:
Heavy duty offshore cranes .
Gangway for interconnection to platform in progress.(BP).
Mud Kill & Choke lines from semi to preliminary derrick.
Conveyor belt on top of ST- Gangway.
DP or Mooring winches with Anchors & wire or chains.
To support during calimiteiten the Semi can standby in particular on a Blowout or Fire ,a ST Fire Fighting Tower can be deliver (semi for Shell -yard Rauma Repola) mounted on the deck , the crew of Red Adair is using the gangway ,cold water is circulated trough the RHS beams of the tower + gangway.