List of Drill Ship classes (DRILL)ships---- ships ---- CVN -- Aircraft Carrier (Nuclear Powered) CV -- Aircraft Carrier CVS -- Aircraft Carrier V STOL H -- Helicopter Carrier BB -- Battleship CGN -- Guided-Missile Cruiser (Nuclear Powered) CG -- Guided-Missile Cruiser C -- Cruiser DDG -- Guided-Missile Destroyer DD -- Destroyer FFG -- Guided-Missile Frigate FF -- Frigate FS -- Corvette W -- Coast Guards LCS -- Littoral combat ship LCC -- Command ship LH -- Assault Carrier L -- Landing Ship/Platform Dock LKA -- Amphibious Cargo Ship AO -- Support Ship AW -- Icebreakers OTH -- Others TK -- Oil Tanker FPSO -- Floating Production Storage and Offloading DRILL -- Drill Ship PSV -- Platform Supply VesselA drillship is a vessel designed for use in deepwater exploratory offshore drilling of new oil and gas wells or for scientific drilling purposes Derivatives / Succeeded by Filter: All-- - International Drillship List of ships Maersk Valiant MaerskMaersk Voyager Maersk