Name of Subsidiary or Organization 

Jurisdiction of

Incorporation

Percentage of Voting

Securities Owned 

1

3291361 Nova Scotia ULC

Canada

100%

2

Al Wasl Marine LLC

Dubai

49%

3

Anscor Tidewater Ship Management Corporation

Philippines

24.99%

4

Antilles Marine Service Limited 

Trinidad and Tobago 

50%

5

Arabia Shipping Limited

Cayman Islands

100%

6

Arrendadora de Naves del Golfo, S.A. de C.V., SOFOM, ENR

Mexico

100%

7

Bahtera Wira Sdn. Bhd.

Malaysia

48.48%

8

Compania Marítima de Magallanes Limitada

Chile

100%

9

Divetide Limited

Thailand

49%

10

Dromond Shipping Pte. Ltd.

Singapore

100%

11

DTDW Holdings Limited

Cyprus

40%

12

DTDW Marine Services B.V.

Netherlands

40%

13

Equipo Mara, C.A.

Venezuela

19.90%

14

Gallivat Corporation

Panama

100%

15

Gentry Investment Limited

Liberia

100%

16

Global Panama Marine Service, Inc.

Panama

100%

17

GM Offshore, Inc.

Delaware

100%

18

GOMI Holdings, Inc.

Delaware

100%

19

Gorgon NewCo, LLC

Delaware

100%

20

Gulf Channel Offshore Servicos LDA

Angola

49%

21

Gulf Fleet Abu Dhabi

Abu Dhabi

49%

22

Gulf Fleet Middle East Limited

Cayman Islands

100%

23

Gulf Fleet Supply Vessels, L.L.C.

Louisiana

100%

24

Gulf Offshore Marine International, S. de R.L.

Panama

100%

25

GulfMark Americas, Inc.

Delaware

100%

26

GulfMark Asia Pte. Ltd.

Singapore

100%

27

GulfMark Capital, LLC

Delaware

100%

28

GulfMark de Mexico, S. de R.L. de C.V.

Mexico

100%

29

GulfMark Foreign Investments LLC

Delaware

100%

30

GulfMark Malaysia Sdn. Bhd.

Malaysia

49%

31

GulfMark Malaysia, Inc.

Malaysia

100%

32

GulfMark Malta Limited

Malta

100%

33

GulfMark Management, Inc.

Delaware

100%

34

GulfMark Marine Trinidad Limited

Trinidad and Tobago

49%

35

GulfMark Maritime S. de R.L. de C.V.

Mexico

100%

36

GulfMark North Sea Limited

United Kingdom

100%

37

GulfMark Oceans, L.P.

Cayman Islands

100%

38

GulfMark Resources, LLC

Delaware

100%

39

GulfMark Servicios de Mexico, S. de R.L. de C.V.

Mexico

49%

40

GulfMark Servicos Maritimos do Brasil Limitada

Brazil

100%

41

GulfMark Shipping, LLC

Delaware

100%

42

GulfMark Thailand, LLC

Delaware

100%

43

GulfMark UK International Limited

United Kingdom

100%

44

Hilliard Oil & Gas, Inc.

Nevada

100%

45

Indigo Fleet Limited

Cayman Islands

100%

46

International Maritime Services, Inc.

Cayman Islands

100%

47

Java Boat Corporation

Louisiana

100%

48

Java Boat Corporation B.V.

Netherlands

100%

49

JB Holding Company B.V.

Netherlands

100%

50

Logistica Mexicana del Caribe, S. de R.L. de C.V.

Mexico

100%

51

Maré Alta do Brasil Navegacão Ltda.

Brazil

100%

Jurisdiction of

Incorporation

Percentage of Voting

Securities Owned 

53

Middle East Ships Limited

Cayman Islands

100%

54

Navegadores Servicos de Apoio Maritimo Ltda.

Brazil

100%

55

Naviera Tidex, S. de R.L. de C.V.

Mexico

49%

56

O.I.L. (Nigeria) Limited

Nigeria

82.10%

57

Offshore Labuan Leasing Inc.

Labuan

100%

58

Offshore Marine Inc.

Labuan

49%

59

Orange Rederiet ApS

Denmark

100%

60

Pacific Tidewater Pty. Ltd.

Australia

100%

61

Pan Marine do Brasil Ltda.

Brazil

100%

62

Pan Marine International, Inc.

Cayman Islands

100%

63

Pental Insurance Co. Ltd.

Bermuda

100%

64

Point Marine, L.L.C.

Louisiana

100%

65

PT Tidewater Marine Offshore

Indonesia

100%

66

Purple Fleet Limited

Cayman Islands

100%

67

Quality Shipyards, L.L.C. 

Louisiana

100%

68

S.O.P., Inc.

Louisiana

100%

69

Samudra Viper Sdn. Bhd.

Malaysia

49.48%

70

Samudra Vixen Sdn. Bhd.

Malaysia

49.48%

71

SEA Maritime Services Pte. Ltd.

Singapore

100%

72

Semaring Enterprise Sdn. Bhd.

Malaysia

51%

73

Semaring Logistics (M) Sdn. Bhd.

Malaysia

49%

74

Serrata Investments, Inc.

Philippines

40%

75

Servicios Costa Afuera de Mexico, S. de R.L. de C.V.

Mexico

100%

76

Sonatide Marine Services, Ltd.

Cayman Islands

100%

77

Sonatide Marine, Ltd.

Cayman Islands

100%

78

Southern Ocean Services Pte. Ltd.

Singapore

100%

83

Tidewater Offshore Arabia Company Limited

Saudi Arabia

49%

84

Tidewater Pacific Offshore (Dubai) (L.L.C.)

Dubai

100%

85

Tide States Vessels, L.L.C.

Louisiana

100%

86

Tide States, L.L.C.

Louisiana

100%

87

Tideflo Marine Services Limited

Nigeria

40%

88

Tidewater (India) Private Limited

India

100%

89

Tidewater Adonai Services Limited

Ghana

49%

90

Tidewater Al Rushaid Co. Ltd.

Saudi Arabia

50%

91

Tidewater Bahagia (B) Sdn. Bhd.

Brunei

100%

92

Tidewater Caribe, C.A.

Venezuela

100%

93

Tidewater Corporate Services, L.L.C.

Delaware

100%

94

Tidewater Crewing Limited

Cayman Islands

100%

95

Tidewater Cypriot Offshore Limited

Cyprus

100%

96

Tidewater Cyprus Limited

Cyprus

100%

97

Tidewater de Mexico, S. de R.L. de C.V.

Mexico

49%

98

Tidewater Dutch Holdings Cooperatief U.A.

Netherlands

100%

99

Tidewater Emergency Response Services PTE. LTD.

Singapore

100%

100

Tidewater GOM Limited

Cayman Islands

100%

101

Tidewater GOM, Inc.

Louisiana

100%

Jurisdiction of

Incorporation

Percentage of Voting

Securities Owned 

106

Tidewater Marine Fleet, L.L.C.

Louisiana

100%

107

Tidewater Marine Gabon S.A.

Gabon

100%

108

Tidewater Marine Hulls, L.L.C.

Louisiana

100%

109

Tidewater Marine International Pte. Ltd.

Singapore

100%

110

Tidewater Marine International, Inc.

Cayman Islands

100%

111

Tidewater Marine Sakhalin, L.L.C.

Louisiana

100%

112

Tidewater Marine Service (M) Sdn. Bhd.

Malaysia

100%

113

Tidewater Marine Services EG, S.A.

Equatorial Guinea

65%

114

Tidewater Marine Ships, L.L.C.

Louisiana

100%

115

Tidewater Marine UK Ltd. 

United Kingdom

100%

116

Tidewater Marine Vessels, L.L.C.

Louisiana

100%

117

Tidewater Marine West Indies Limited

Bahamas

100%

118

Tidewater Marine Western, L.L.C.

Delaware

100%

119

Tidewater Marine, L.L.C.

Louisiana

100%

120

Tidewater Mexico Holding, L.L.C.

Delaware

100%

121

Tidewater Navegacao Offshore Ltda.

Brazil

100%

122

Tidewater Norge AS

Norway

100%

123

Tidewater Ocean Salvage PTE. LTD.

Singapore

50%

124

Tidewater Offshore (Caspian) LLC

Azerbaijan

100%

125

Tidewater Offshore (North Sea) Limited

England

100%

126

Tidewater Offshore Africa SA

Cameroon

100%

127

Tidewater Offshore Canada Limited

Canada

100%

129

Tidewater Offshore Holdings Limited

Bermuda

100%

130

Tidewater Offshore Limited

Bermuda

100%

131

Tidewater Offshore NZ Limited

New Zealand

100%

132

Tidewater Offshore Operations PTE. LTD.

Singapore

100%

133

Tidewater Offshore Pty Limited

Australia

100%

134

Tidewater Offshore Sdn Bhd

Malaysia

49%

135

Tidewater Offshore Services PTE. LTD.

Singapore

100%

136

Tidewater Personnel UK LTD

United Kingdom

100%

137

Tidewater Production Solutions PTE. LTD.

Singapore

100%

138

Tidewater Rederi AS

Norway

100%

139

Tidewater Salvage PTE. LTD.

Singapore

100%

140

Tidewater Seabed Shipping AS

Norway

100%

141

Tidewater Servicos Maritimos, Lda.

Angola

49%

142

Tidewater Ship Management Limited

Hong Kong

100%

143

Tidewater Subsea ROV, L.L.C.

Louisiana

100%

144

Tidewater Subsea, L.L.C.

Louisiana

100%

145

Tidewater Support Services Limited

England

100%

146

Tidewater Venture, Inc.

Delaware

100%

147

Tidex Nigeria Limited

Nigeria

60%

148

Troms Offshore Fleet Holding AS

Norway

100%

149

Troms Offshore Management AS

Norway

100%

150

Troms Offshore Supply AS

Norway

100%

151

Twenty Grand (Brazil), L.L.C.

Louisiana

100%

152

Twenty Grand Marine Service, L.L.C.

Louisiana

100%

NOTE:  The Company has elected to exclude certain subsidiaries that do not constitute a “Significant Subsidiary” as set forth in Section 601(b)(21) of Regulation S-K.