Shelf Drilling Rig Locations Rigs Adriatic I Adriatic X Baltic C E Thornton Comet Compact Driller F G McClintock Galveston Key 300 Foot Jack-up Drilling Unit Harvey H. Ward Hibiscus High Island II High Island IV High Island IX High Island V High Island VII J. T. Angel Key Gibraltar Key Hawaii Key Manhattan Key Singapore Main Pass I Main Pass IV Parameswara Randolph Yost Rig 124 Rig 141 Ron Tappmeyer Shelf Drilling Chaophraya Shelf Drilling Krathong Shelf Drilling Mentor Shelf Drilling Resourceful Shelf Drilling Scepter 350 Foot Jack-up Drilling Unit Shelf Drilling Tenacious Trident 15 Trident 16 Trident II Trident VIII Trident XII Trident XIV