Drillship
![Comparison of deepwater semi-submersible and drillship.](/Images/godic/202501/10/Deepwater_drilling_systems_22244.png")
![In the foreground, offshore support vessel Toisa Perseus with the fifth-generation deepwater drillship Discoverer Enterprise.](/Images/godic/202501/10/Toisa_Perseus&Discoverer_Enterprise2244.jpg")
![Drillship Discoverer Enterprise.](/Images/godic/202501/10/Q4000-Discoverer-Enterprise2244.jpg")
![Drillship CUSS I.](/Images/godic/202501/10/Mohopix-12244.gif")
A drillship is a merchant vessel designed for use in exploratory offshore drilling of new oil and gas wells or for scientific drilling purposes. In most recent years the vessels are used in deepwater and ultra-deepwater applications, equipped with the latest and most advanced dynamic positioning systems.