EX-21 4 tdw-ex21_1978.htm EX-21

Exhibit 21

LIST OF SUBSIDIARIES

|  |  |  |  | Percentage of |
|  |  |  |  | Voting |
|  |  | State or Country of |  | Securities |
| Name of Subsidiary or Organization |  | Incorporation |  | Owned |
1 | 3291361 Nova Scotia ULC |  | Canada |  |  | 100 | %
2 | Al Wasl Marine LLC |  | Dubai |  |  | 49 | %
3 | Antilles Marine Service Limited |  | Trinidad and Tobago |  |  | 50 | %
4 | Arabia Shipping Limited |  | Cayman Islands |  |  | 100 | %
5 | Arrendadora de Naves del Golfo, S.A. de C.V., SOFOM, ENR |  | Mexico |  |  | 100 | %
6 | Cajun Acquisitions, LLC |  | Delaware |  |  | 100 | %
7 | Chalvoyage (M) Sdn. Bhd. |  | Malaysia |  |  | 49 | %
8 | Compania Marítima de Magallanes Limitada |  | Chile |  |  | 100 | %
9 | Divetide Limited |  | Thailand |  |  | 49 | %
10 | DTDW Holdings Limited |  | Cyprus |  |  | 40 | %
11 | DTDW Marine Services B.V. |  | Netherlands |  |  | 40 | %
12 | Equipo Mara, C.A. |  | Venezuela |  |  | 19.90 | %
13 | Global Panama Marine Service, Inc |  | Panama |  |  | 100 | %
14 | GM Offshore, Inc. |  | Delaware |  |  | 100 | %
15 | GOMI Holdings, Inc. |  | Delaware |  |  | 100 | %
16 | Gorgon NewCo, LLC |  | Delware |  |  | 100 | %
17 | Gulf Channel Offshore Servicos LDA |  | Angola |  |  | 49 | %
18 | Gulf Fleet Abu Dhabi |  | Abu Dhabi |  |  | 49 | %
19 | Gulf Fleet Middle East Limited |  | Cayman Islands |  |  | 100 | %
20 | Gulf Fleet N.V. |  | Netherlands Antilles |  |  | 100 | %
21 | Gulf Fleet Supply Vessels, L.L.C. |  | Louisiana |  |  | 100 | %
22 | Gulf Offshore Marine International, S. de R.L. |  | Panama |  |  | 100 | %
23 | GulfMark Americas, Inc. |  | Delaware |  |  | 100 | %
24 | GulfMark Asia Pte. Ltd. |  | Singapore |  |  | 100 | %
25 | GulfMark Capital, LLC |  | Delaware |  |  | 100 | %
26 | GulfMark de Mexico, S. de R.L. de C.V. |  | Mexico |  |  | 100 | %
27 | GulfMark Foreign Investments LLC |  | Delaware |  |  | 100 | %
28 | GulfMark Guernsey International Limited |  | Guernsey |  |  | 100 | %
29 | GulfMark Malaysia Inc. |  | Malaysia |  |  | 100 | %

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|  |  |  |  | Percentage of |
|  |  |  |  | Voting |
|  |  | State or Country of |  | Securities |
| Name of Subsidiary or Organization |  | Incorporation |  | Owned |
30 | GulfMark Malaysia Sdn. Bhd. |  | Malaysia |  |  | 49 | %
31 | GulfMark Malta Ltd. |  | Malta |  |  | 100 | %
32 | GulfMark Management, Inc. |  | Delaware |  |  | 100 | %
33 | GulfMark Marine Trinidad Limited |  | Trinidad & Tobago |  |  | 49 | %
34 | GulfMark Maritime S. de R.L. de C.V. |  | Mexico |  |  | 100 | %
35 | GulfMark North Sea Limited |  | United Kingdom |  |  | 100 | %
36 | GulfMark Oceans, L.P. |  | Cayman Islands |  |  | 100 | %
37 | GulfMark Resources, LLC |  | Delaware |  |  | 100 | %
38 | GulfMark Servicios de Mexico, S. de R.L. de C.V. |  | Mexico |  |  | 49 | %
39 | GulfMark Servicos Maritimos do Brasil Limitada |  | Brazil |  |  | 100 | %
40 | GulfMark Shipping, LLC |  | Delaware |  |  | 100 | %
41 | GulfMark Thailand, LLC |  | Delaware |  |  | 100 | %
42 | GulfMark UK International Limited |  | United Kingdom |  |  | 100 | %
43 | Hilliard Oil & Gas, Inc. |  | Nevada |  |  | 100 | %
44 | Indigo Fleet Limited |  | Cayman Islands |  |  | 100 | %
45 | International Maritime Services, Inc |  | Cayman Islands |  |  | 100 | %
46 | Java Boat Corporation |  | Louisiana |  |  | 100 | %
47 | Java Boat Corporation B.V. |  | Netherlands |  |  | 100 | %
48 | JB Holding Company B.V. |  | Netherlands |  |  | 100 | %
49 | Logistica Mexicana del Caribe, S. de R.L. de C.V. |  | Mexico |  |  | 100 | %
50 | Mare Alta do Brasil Navegacao Ltda. |  | Brazil |  |  | 100 | %
51 | Mashhor Marine Sdn. Bhd. |  | Brunei |  |  | 70 | %
52 | Middle East Ships Limited |  | Cayman Islands |  |  | 100 | %
53 | Navegadores Servicos de Apoio Maritimo Ltda. |  | Brazil |  |  | 100 | %
54 | Naviera Tidex, S. de R.L. de C.V |  | Mexico |  |  | 49 | %
55 | Niugini Offshore Services Joint Venture |  | Papua New Guinea |  |  | 40 | %
56 | O.I.L. (Nigeria) Limited |  | Nigeria |  |  | 82.10 | %
57 | Offshore Labuan Leasing Inc. |  | Labuan |  |  | 100 | %
58 | Offshore Marine Inc |  | Labuan |  |  | 49 | %
59 | Pacific Tidewater Pty. Ltd. |  | Australia |  |  | 100 | %
60 | Pan Marine do Brasil Ltda. |  | Brazil |  |  | 100 | %
61 | Pan Marine International Dutch Holdings, L.L.C. |  | Louisiana |  |  | 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 | Purple Fleet Limited |  | Cayman Islands |  |  | 100 | %
66 | Quality Shipyards, L.L.C. |  | Louisiana |  |  | 100 | %
67 | S.O.P., Inc. |  | Louisiana |  |  | 100 | %
68 | Sakhalin Holding, L.L.C. |  | Russia |  |  | 100 | %
69 | Sakhalin Offshore Marine, L.L.C. |  | Russia |  |  | 100 | %

2

|  |  |  |  | Percentage of |
|  |  |  |  | Voting |
|  |  | State or Country of |  | Securities |
| Name of Subsidiary or Organization |  | Incorporation |  | Owned |
70 | SEA Maritime Services Pte. Ltd. |  | Singapore |  |  | 100 | %
71 | Semaring Logistics (M) Sdn. Bhd. |  | Malaysia |  |  | 100 | %
72 | Servicios Costa Afuera de Mexico, S. de R.L. de C.V |  | Mexico |  |  | 100 | %
73 | Sonatide Marine Services, Ltd. |  | Cayman Islands |  |  | 49 | %
74 | Sonatide Marine, Ltd. |  | Cayman Islands |  |  | 100 | %
75 | Southern Ocean Services Pte. Ltd. |  | Singapore |  |  | 100 | %
76 | Tide States Vessels, L.L.C. |  | Louisiana |  |  | 100 | %
77 | Tide States, L.L.C. |  | Louisiana |  |  | 100 | %
78 | Tideflo Marine Services Limited |  | Nigeria |  |  | 40 | %
79 | Tidewater (India) Private Limited |  | India |  |  | 100 | %
80 | Tidewater Al Rushaid Co. Ltd. |  | Saudi Arabia |  |  | 50 | %
81 | Tidewater Caribe, C.A. |  | Venezuela |  |  | 100 | %
82 | Tidewater Corporate Services, L.L.C |  | Delaware |  |  | 100 | %
83 | Tidewater Crewing Guernsey Ltd. |  | Guernsey |  |  | 100 | %
84 | Tidewater Crewing Limited |  | Cayman Islands |  |  | 100 | %
85 | Tidewater Cyprus Limited |  | Cyprus |  |  | 100 | %
86 | Tidewater de Mexico, S. de R.L. de C.V. |  | Mexico |  |  | 49 | %
87 | Tidewater Dutch Holdings Cooperatief U.A. |  | Netherlands |  |  | 100 | %
88 | Tidewater GOM, Inc. |  | Louisiana |  |  | 100 | %
89 | Tidewater Investment Cooperatief U.A |  | Netherlands |  |  | 100 | %
90 | Tidewater Investment SRL |  | Barbados |  |  | 100 | %
91 | Tidewater Marine AS |  | Norway |  |  | 100 | %
92 | Tidewater Marine Australia Pty Ltd |  | Australia |  |  | 100 | %
93 | Tidewater Marine Charter Services Pte. Ltd. |  | Singapore |  |  | 100 | %
94 | Tidewater Marine Fleet, L.L.C. |  | Louisiana |  |  | 100 | %
95 | Tidewater Marine Gabon S.A. |  | Gabon |  |  | 100 | %
96 | Tidewater Marine Hulls, L.L.C. |  | Louisiana |  |  | 100 | %
97 | Tidewater Marine Indonesia Limited |  | Vanuatu |  |  | 100 | %
98 | Tidewater Marine International Dutch Holdings, L.L.C. |  | Louisiana |  |  | 100 | %
99 | Tidewater Marine International Pte. Ltd. |  | Singapore |  |  | 100 | %
100 | Tidewater Marine International, Inc. |  | Cayman Islands |  |  | 100 | %
101 | Tidewater Marine Sakhalin, L.L.C. |  | Louisiana |  |  | 100 | %
102 | Tidewater Marine Service (M) Sdn. Bhd. |  | Malaysia |  |  | 100 | %
103 | Tidewater Marine Ships, L.L.C. |  | Louisiana |  |  | 100 | %
104 | Tidewater Marine Technical Services (Shenzhen) Co., Ltd |  | China |  |  | 100 | %
105 | Tidewater Marine UK Ltd. |  | United Kingdom |  |  | 100 | %
106 | Tidewater Marine Vanuatu Limited |  | Vanuatu |  |  | 100 | %
107 | Tidewater Marine Vessels, L.L.C. |  | Louisiana |  |  | 100 | %

3

|  |  |  |  | Percentage of |
|  |  |  |  | Voting |
|  |  | State or Country of |  | Securities |
| Name of Subsidiary or Organization |  | Incorporation |  | Owned |
108 | Tidewater Marine West Indies Limited |  | Bahamas |  |  | 100 | %
109 | Tidewater Marine Western, L.L.C. |  | Delaware |  |  | 100 | %
110 | Tidewater Marine, L.L.C. |  | Louisiana |  |  | 100 | %
111 | Tidewater Mexico Holding, L.L.C |  | Delaware |  |  | 100 | %
112 | Tidewater Norge AS |  | Norway |  |  | 100 | %
113 | Tidewater Offshore Sdn Bhd |  | Malaysia |  |  | 49 | %
114 | Tidewater Personnel UK LTD |  | United Kingdom |  |  | 100 | %
115 | Tidewater Rederi AS |  | Norway |  |  | 100 | %
116 | Tidewater Subsea ROV, L.L.C. |  | Louisiana |  |  | 100 | %
117 | Tidewater Subsea, L.L.C. |  | Louisiana |  |  | 100 | %
118 | Tidewater Support Services Limited |  | England |  |  | 100 | %
119 | Tidewater Venture, Inc |  | Delaware |  |  | 100 | %
120 | Tidewater Vessels Limited |  | Cayman Islands |  |  | 100 | %
121 | Tidex Nigeria Limited |  | Nigeria |  |  | 60 | %
122 | Troms Offshore Fleet 1 AS |  | Norway |  |  | 100 | %
123 | Troms Offshore Fleet 2 AS |  | Norway |  |  | 100 | %
124 | Troms Offshore Fleet 3 AS |  | Norway |  |  | 100 | %
125 | Troms Offshore Fleet 4 AS |  | Norway |  |  | 100 | %
126 | Troms Offshore Fleet Holding AS |  | Norway |  |  | 100 | %
127 | Troms Offshore Management AS |  | Norway |  |  | 100 | %
128 | Troms Offshore Marine AS |  | Norway |  |  | 100 | %
129 | Troms Offshore Services AS |  | Norway |  |  | 100 | %
130 | Troms Offshore Supply AS |  | Norway |  |  | 100 | %
131 | Twenty Grand (Brazil), L.L.C |  | Louisiana |  |  | 100 | %
132 | Twenty Grand Marine Service, L.L.C. |  | Louisiana |  |  | 100 | %
133 | Vesselogistics Limited |  | Cyprus |  |  | 100 | %
134 | VTG Ships Limited |  | Cayman Islands |  |  | 100 | %
135 | VTG Supply Boat Liberia Inc. |  | Liberia |  |  | 100 | %
136 | Zapata Gulf Marine L.L.C. |  | Louisiana |  |  | 100 | %
137 | Zapata Marine Service (Nigeria) Limited |  | Nigeria |  |  | 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.

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