3rd engineer Bosun / AB / HLO Captain / Master / OIM / Barge Master Catering / Chief Steward / Chief Cook / Cook / Steward / Mess boy / Laundry man Chief engineer / TSL / ATSL Chief Mate / Chief officer / SDPO / MSL Crane operator / Deck pusher Derrickman / Derrickhand Driller Electrician Engineer ERO / 2nd engineer ET Floorman Full crew Full rig crew Officer Oiler / Motorman / Pumpman / Welder Pusher Radio Operator Rig Manager / ARM Rig mechanic Rig welder Rigger / Roustabout / Roughneck RMS Safety Officer SDPO / DPO / ADPO Store keeper / Material coordinator Subsea engineer Superintendent Supervisor