Jack-Up Rig

For those who may have not seen a jack-up oil rig, this is the photo.

The jack-up rig that we see in the photo is being elevated (jacked up) using built-in rack and pinion system, for the purpose of joining the last sections of leg.

Jack-up rig is an interesting engineering structure as different engineering principles are involved in its design and construction.

Singapore is a world leader in the building of jack-up rig.