Exhibit 21.1
 NOBLE CORPORATION SUBSIDIARIES (as of February 24, 2009)
 SUBSIDIARY NAME
    
    INCORPORATED OR ORGANIZED IN:Noble NDC Holding (Cyprus) Limited (1)
    
    CyprusNoble Corporation (1)
    
    SwitzerlandNoble Holding International (Cayman) Ltd. (1)
    
    Cayman IslandsNoble Holding International (Cayman NHIL) Ltd. (1)
    
    Cayman IslandsNoble Drilling (Luxembourg) S.à r.l. (2)
    
    LuxembourgNoble Cayman Acquisition Ltd. (3)
    
    Cayman IslandsNoble Downhole Technology Ltd. (4)
    
    Cayman IslandsNoble Drilling (Cyprus) Limited (4)
    
    CyprusNoble Holding International Limited (5)
    
    Cayman IslandsNoble Holding (U.S.) Corporation (6)
    
    DelawareNoble Drilling Holding GmbH (7)
    
    SwitzerlandNoble Drilling (Deutschland) GmbH (8)
    
    GermanyNoble Technology (Canada) Ltd. (8)
    
    Alberta, CanadaNoble Engineering & Development de Venezuela C.A. (8)
    
    VenezuelaNoble Drilling Americas LLC (9)
    
    DelawareNoble Drilling Holding LLC (9)
    
    DelawareNoble International Services LLC (9)
    
    DelawareNoble North Africa Limited (9)
    
    Cayman IslandsMaurer Technology Incorporated (10)
    
    DelawareNoble Drilling Corporation (10)
    
    DelawareNoble Brasil Investimentos E Participacoes Ltda. (11)
    
    BrazilWELLDONE Engineering GmbH (12)
    
    GermanyNoble International Limited (13)
    
    Cayman IslandsInternational Directional Services Ltd. (13)
    
    BermudaNoble Enterprises Limited (13)
    
    Cayman IslandsNoble Mexico Services Limited (13)
    
    Cayman IslandsNoble-Neddrill International Limited (13)
    
    Cayman IslandsNoble Asset Company Limited (13)
    
    Cayman IslandsNoble Asset (U.K.) Limited (13)
    
    Cayman IslandsNoble Drilling (Nigeria) Ltd. (13)
    
    NigeriaNoble Drilling (Paul Wolff) Ltd. (13)
    
    Cayman IslandsNoble do Brasil Ltda. (14)
    
    BrazilNoble Mexico Limited (13)
    
    Cayman IslandsNoble International Finance Company (13)
    
    Cayman IslandsNoble Drilling (TVL) Ltd. (13)
    
    Cayman IslandsNoble Drilling (Carmen) Limited (13)
    
    Cayman IslandsNoble Gene Rosser Limited (13)
    
    Cayman IslandsNoble Campeche Limited (13)
    
    Cayman IslandsNoble Offshore Mexico Limited (13)
    
    Cayman IslandsNoble Offshore Contracting Limited (13)
    
    Cayman IslandsNoble Management Services S. de R.L. de C.V. (15)
    
    MexicoNoble Dave Beard Limited (13)
    
    Cayman IslandsSedco Dubai LLC (16)
    
    Dubai, UAENoble (Middle East) Limited (13)
    
    Cayman IslandsNoble Drilling Holdings (Cyprus) Limited (13)
    
    CyprusTriton Engineering Services Company (17)
    
    DelawareNoble Drilling International Inc. (17)
    
    DelawareNoble Carl Norberg LLC (17)
    
    DelawareNoble Earl Frederickson LLC (17)
    
    DelawareNoble Drilling Services Inc. (17)
    
    DelawareNoble Drilling (U.S.) Inc. (17)
    
    DelawareNoble Drilling Arabia Limited (18)
    
    Saudi ArabiaNoble Drilling de Venezuela C.A. (19)
    
    VenezuelaNoble Offshore de Venezuela C.A. (19)
    
    VenezuelaNoble Drilling International Services Pte. Ltd. (20)
    
    SingaporeNoble Drilling (Malaysia) Sdn. Bhd. (20)
    
    MalaysiaNoble Drilling International Ltd. (20)
    
    BermudaTSIA International (Antilles) N.V. (21)
    
    The Netherland AntillesArktik Drilling Limited, Inc. (22)
    
    BahamasNoble Rochford Drilling (North Sea) Ltd. (21)
    
    Cayman IslandsNoble Drilling Asset (M.E.) Ltd. (21)
    
    Cayman IslandsNoble Drilling (N.S.) Limited (23)
    
    United KingdomNoble Drilling (Denmark) ApS (23)
    
    DenmarkNoble Contracting GmbH (23)
    
    SwitzerlandNoble Holding Europe S.à r.l. (23)
    
    LuxembourgNoble Leasing (Switzerland) GmbH (23)
    
    SwitzerlandNoble Leasing II (Switzerland) GmbH (23)
    
    SwitzerlandTriton International, Inc. (24)
    
    DelawareTriton Engineering Services Company, S.A. (24)
    
    VenezuelaNoble Drilling (Canada) Ltd. (25)
    
    Alberta, CanadaNoble Drilling International (Cayman) Ltd. (26)
    
    Cayman IslandsNoble Drilling Leasing LLC (27)
    
    DelawareNoble John Sandifer LLC (27)
    
    DelawareNoble Bill Jennings LLC (27)
    
    DelawareNoble Drilling Exploration Company (27)
    
    DelawareNoble Leonard Jones LLC (27)
    
    DelawareNoble (Gulf of Mexico) Inc. (27)
    
    DelawareNoble Drilling (Jim Thompson) Inc.(27)
    
    DelawareNoble Asset Mexico LLC (27)
    
    DelawareNoble Johnnie Hoffman LLC (27)
    
    DelawareNoble Operating (M.E.) Ltd. (28)
    
    Cayman IslandsNoble Drilling (Land Support) Limited (29)
    
    United KingdomNoble Drilling (Nederland) B.V. (30)
    
    The NetherlandsNoble Drilling Norway AS (31)
    
    NorwayTriton International de Mexico S.A. de C.V. (32)
    
    MexicoBawden Drilling Inc. (33)
    
    DelawareBawden Drilling International Ltd. (33)
    
    BermudaNoble International Services Ltd. (33)
    
    BermudaResolute Insurance Group Ltd. (34)
    
    Bermuda
 1
    
    100% owned by Noble Corporation2
    
    100% owned by Noble NDC Holding (Cyprus) Limited3
    
    100% owned by Noble Corporation (incorporated in Switzerland)4
    
    100% owned by Noble Holding International (Cayman) Ltd.5
    
    50% owned by Noble Holding International (Cayman) Ltd., 50% owned by Noble Holding International (Cayman NHIL) Ltd.6
    
    42.44% owned by Noble Drilling (Luxembourg) S.à r.l., 57.56% owned by Noble Drilling International (Cayman) Ltd.7
    
    100% owned by Noble Drilling (Luxembourg) S.à r.l.8
    
    100% owned by Noble Downhole Technology Ltd.9
    
    100% owned by Noble Holding International Limited10
    
    100% owned by Noble Holding (U.S.) Corporation11
    
    99% owned by Noble Drilling Holding GmbH, 1% owned by Noble Drilling Holding LLC12
    
    100% owned by Noble Drilling (Deutschland) GmbH13
    
    100% owned by Noble Drilling Holding LLC14
    
    99% owned by Noble Drilling Holding LLC, 1% owned by Noble Asset Company Limited15
    
    99% owned by Noble Offshore Contracting Limited, 1% owned by Noble Drilling (Carmen) Limited16
    
    Joint venture (owned 49% by Noble Drilling Holding LLC)17
    
    100% owned by Noble Drilling Corporation18
    
    50% owned by Noble International Limited19
    
    100% owned by Noble International Limited20
    
    100% owned by Noble Enterprises Limited (70% in the case of Noble Drilling (Malaysia) Sdn. Bhd.)21
    
    100% owned by Noble Asset Company Limited22
    
    Joint venture (owned 82% by Noble Asset Company Limited)23
    
    100% owned by Noble Drilling Holdings (Cyprus) Limited24
    
    100% owned by Triton Engineering Services Company25
    
    100% owned by Noble Drilling International Inc.26
    
    95% owned by Noble Drilling International Inc., 5% owned by Noble Drilling (U.S.) Inc.27
    
    100% owned by Noble Drilling (U.S.) Inc.28
    
    100% owned by Noble Drilling Asset (M.E.) Ltd.29
    
    100% owned by Noble Drilling (N.S.) Limited30
    
    100% owned by Noble Drilling (Denmark) ApS31
    
    100% owned by Noble Holding Europe S.à r.l.32
    
    100% owned by Triton International, Inc.33
    
    100% owned by Noble Drilling (Canada) Ltd.34
    
    100% owned by Bawden Drilling International Ltd.