Please tell what are all part of machine in Semi Submersible Rig?

semisubmersible rig contain drilling equipments then for maintaining the floating and  stability they have buoyancy tanks and then they have derricks ,then they have mooring system most of the semisubmersibles are catenary moored, then production lines / risers ,then lifting equipments dynamic positioning systems will be there

Engies - power generation, power distribution, DP propulsion, drilling package equipments, accommodation with life sustain equipment, lifting equipment, life saving equipments and many others, depend of design and specification.

Drill floor 

cantile lever 

mud house