A Jackup is a deck or platform on a rig that has legs that can be jacked up or down. When operations are taking place the legs rest on the seabed. When the rig is to be moved the legs are retracted enabling it to float into position.

The work of a Junior Electrician on a ship work involves assisting the rest of the electrical department with tasks such as reading and understanding technical diagrams and blueprints installing and replacing wiring and electrical components and maintaining repairing and upgrading faulty electrics.