EXHIBIT 21.1
SUBSIDIARY COMPANIES AND STATE OR
JURISDICATION OF INCORPORATION
Atwood Oceanics Pacific Limited Cayman Islands B.W.I. 100%
Alpha Offshore Drilling Services Cayman Islands, B.W.I. 100%
Atwood Drilling Inc. Delaware 100%
Atwood Offshore Inc. Delaware 100%
Atwood Hunter Co. Delaware 100%
Eagle Oceanics, Inc. Delaware 100%
Atwood Oceanics Drilling Company Texas 100%
Atwood Oceanics International, S.A. Panama 100%
Atwood Oceanics Australia Pty. Ltd. Australia 100%
Atwood Oceanics Platforms Pty. Ltd. Australia 100%
Atwood Oceanics Service Pty. Ltd. Australia 100%
Atwood Oceanics West Tuna Pty. Ltd. Australia 50%
Aurora Offshore Service GmbH Germany 100%
Atwood Oceanics (M) Sdn. Bhd. Malaysia 100%
Clearways Offshore Development Drilling Sdn. Bhd. Malaysia 30%
Drillquest (M) Sdn. Bhd. Malaysia 90%
PT Pentawood Offshore Drilling Indonesia 80%
Swiftdrill, Inc. Texas 100%
Swiftdrill Nigeria Limited Nigeria 60%
