EX-21.01 3 oii_exhibit2101x12312023.htm EX-21.01 SUBSIDIARIES OF OCEANEERING Document

Exhibit 21.01
SUBSIDIARIES OF OCEANEERING INTERNATIONAL, INC.
SubsidiariesPercentage of Ownership by Oceaneering International, Inc.Jurisdiction of Organization
Oceaneering Angola, S.A.45%Angola
Marine Production Systems Do Brasil Ltda.100%Brazil
Marine Production Systems, Ltd.100%Delaware
Oceaneering Canada Limited100%Delaware
C & C Technologies, Inc.100%Louisiana
Oceaneering Holdings Sarl100%Luxembourg
Oceaneering International Holdings Sarl100%Luxembourg
Oceaneering Luxembourg Sarl100%Luxembourg
Oceaneering Services (Malaysia) Sdn Bhd100%Malaysia
Oceaneering Mobile Robotics B.V.100%Netherlands
Oceaneering AS100%Norway
Oceaneering Services PNG Ltd.100%Papua New Guinea
Oceaneering International GmbH100%Switzerland
Grayloc Products, L.L.C.100%Texas
C & C Technologies (Thailand) Co., Ltd.100%Thailand
Oceaneering Mobile Workforce Limited100%United Arab Emirates
Grayloc Products Ltd.100%United Kingdom
Oceaneering International Services Limited100%United Kingdom
Marine International Ltd.100%Vanuatu
Oceaneering Marine Technologies Ltd.100%Vanuatu