A maritime vessel modified to include a drilling rig and special station-keeping equipment. The vessel is typically capable of operating in deep water. A drillship must stay relatively stationary on l [..]

A ship specially designed for offshore drilling of the seabed.

is a specialized vessel for drilling into the mud and rock of the seafloor. Typically, drillships are large, require a skilled crew to operate, and are very expensive to operate (advanced commercial drillships can cost more than a half-million dollars a day). Many dozen drillships exist for commercial purposes such as oil and gas drilling, but only [..]

A ship-shaped drilling vessel which can operate in great water depths. The ships are kept in position while drilling by dynamic positioning, a complex system of propellers, thrusters, etc. linked to a [..]

A self-propelled, self-contained vessel equipped with a derrick amidships for drilling wells in deep water.