EX-8.1 43 dex81.htm SUBSIDIARIES OF THE COMPANY Subsidiaries of the Company

Exhibit 8.1

The Company’s consolidated subsidiaries as of December 31, 2010, are listed below:

 

Ship-owning Companies with vessels in operation at December 31, 2010    Country of
Incorporation		      Vessel
1.    Malvina Shipping Company Limited    Malta      Coronado
2.    Selma Shipping Company Limited    Malta      La Jolla
3.    Samsara Shipping Company Limited    Malta      Ocean Crystal
4.    Farat Shipping Company Limited    Malta      Toro
5.    Borsari Shipping Company Limited    Malta      Catalina
6.    Onil Shipping Company Limited    Malta      Padre
7.    Fabiana Navigation Company Limited    Malta      Alameda
8.    Karmen Shipping Company Limited    Malta      Sonoma
9.    Thelma Shipping Company Limited    Malta      Manasota
10.    Celine Shipping Company Limited    Malta      Mendocino
11.    Tempo Marine Co.    Marshall Islands      Maganari
12.    Star Record Owning Company Limited    Marshall Islands      Ligari
13.    Argo Owning Company Limited    Marshall Islands      Redondo
14.    Rea Owning Company Limited    Marshall Islands      Ecola
15.    Gaia Owning Company Limited    Marshall Islands      Samsara
16.    Kronos Owning Company Limited    Marshall Islands      Primera
17.    Trojan Maritime Co.    Marshall Islands      Brisbane
18.    Dione Owning Company Limited    Marshall Islands      Marbella
19.    Phoebe Owning Company Limited    Marshall Islands      Majorca
20.    Uranus Owning Company Limited    Marshall Islands      Levanto
21.    Selene Owning Company Limited    Marshall Islands      Bargara
22.    Tethys Owning Company Limited    Marshall Islands      Capitola
23.    Ioli Owning Company Limited    Marshall Islands      Paros I (ex ClipperGemini)
24.    Iason Owning Company Limited    Marshall Islands      Oregon
25.    Orpheus Owning Company Limited    Marshall Islands      Avoca
26.    Team up Owning Company Limited    Marshall Islands      Saldanha
27.    Iokasti Owning Company Limited    Marshall Islands      Galveston
28.    Boone Star Owners Inc.    Marshall Islands      Samatan
29.    Norwalk Star Owners Inc.    Marshall Islands      Capri
30.    Ionian Traders Inc.    Marshall Islands      Positano
31.    NT LLC Investors Ltd.    Marshall Islands      Conquistador
32.    Dalian Star Owners Inc.    Marshall Islands      Mystic
33.    Aegean Traders Inc.    Marshall Islands      Sorrento
34.    Cretan Traders Inc.    Marshall Islands      Flecha
35.    Monteagle Shipping S.A.    Marshall Islands      Oliva
36.    Roscoe Marine Ltd.    Marshall Islands      Rapallo
37.    Ialysos Owning Company Limited    Marshall Islands      Amalfi
Ship-buying Companies of vessels under construction    Country of
Incorporation		      Vessel
38.    Pergamos Owning Company Limited    Marshall Islands      Hull 1637A
39.    Amathus Owning Company Limited    Marshall Islands      Hull 1638A
40.    Olympian Zeus Owners Inc.    Marshall Islands      Hull 1833
41.    Olympian Apollo Owners Inc.    Marshall Islands      Hull 1887
42.    Olympian Poseidon Owners Inc.    Marshall Islands      Hull 1873
43.    Olympian Demeter Owners Inc.    Marshall Islands      Hull 1874
44.    Olympian Hera Owners Inc.    Marshall Islands      Hull 1834
45.    Olympian Athena Owners Inc.    Marshall Islands      Hull 1885

46.    Olympian Dionysus Owners Inc.    Marshall Islands      Hull 1886
47.    Olympian Artemis Owners Inc.    Marshall Islands      Hull 1888
48.    Olympian Ares Owners Inc.    Marshall Islands      Hull 1889
49.    Olympian Aphrodite Owners Inc.    Marshall Islands      Hull 1890
50.    Olympian Hephaestus Owners Inc.    Marshall Islands      Hull 1848
51.    Olympian Hermes Owners Inc.    Marshall Islands      Hull 1949
Ship-owning Companies with vessels sold or canceled    Country of
Incorporation		      Vessel
52.    Iktinos Owning Company Limited    Marshall Islands      Hull SS058 (Cancelled – Oct. 2009)
53.    Kallikrates Owning Company Limited    Marshall Islands      Hull SS059 (Cancelled – Oct. 2009)
54.    Faedon Shareholders Limited    Marshall Islands      Hull 2089 (Sold – May 2009)
55.    Lansat Shipping Company Limited    Malta      Paragon (Sold – March 09)
56.    Thassos Traders Inc    Marshall Islands      Sidari (Cancelled – Dec 08)
57.    Milos Traders Inc.    Marshall Islands      Petani (Cancelled – Dec 08)
58.    Sifnos Traders Inc.    Marshall Islands      Hull 1568A (Cancelled – Dec 08)
59.    Tinos Traders Inc.    Marshall Islands      Hull 1569A (Cancelled – Dec 08)
60.    Annapolis Shipping Company    Malta      Lacerta (Sold – Dec 08)
61.    Tolan Shipping Company Limited    Malta      Tonga (Sold – Nov 2008)
62.    Felicia Navigation Company Limited    Malta      Solana (Sold – August 2008)
63.    Zatac Shipping Company Limited    Malta      Waikiki (Sold – July 2008)
64.    Atlas Owning Company Limited    Marshall Islands      Menorca (Sold – June 2008)
65.    Maternal Owning Company Limited    Marshall Islands      Lanzarote (Sold – June 2008)
66.    Royerton Shipping Company Limited    Malta      Netadola (Sold – April 2008)
67.    Lancat Shipping Company Limited    Malta      Matira (Sold – February 2008)
68.    Paternal Owning Company Limited    Marshall Islands      Formentera (Sold – December 2007)
69.    Fago Shipping Company Limited    Malta      Lanikai (Sold – July 2007)
70.    Hydrogen Shipping Company Limited    Malta      Mostoles (Sold – July 2007)
71.    Madras Shipping Company Limited    Malta      Alona (Sold – June 2007)
72.    Seaventure Shipping Limited    Marshall Islands      Hille Oldendorff (Sold June 2007)
73.    Classical Owning Company Limited    Marshall Islands      Delray (Sold – May 2007)
74.    Oxygen Shipping Company Limited    Malta      Shibumi (Sold – April 2007)
75.    Human Owning Company Limited    Marshall Islands      Estepona (Sold – April 2007)
76.    Helium Shipping Company Limited    Malta      Striggla (Sold – January 2007)
77.    Blueberry Shipping Company Limited    Malta      Panormos (Sold – January 2007)
78.    Platan Shipping Company Limited    Malta      Daytona (Sold – January 2007)
79.    Silicon Shipping Company Limited    Malta      Flecha (Sold – December 2006)

80.    Callicles Challenge Inc.    Marshall Islands      Hull 1154 (Cancelled – April 2009)
81.    Antiphon Challenge Inc.    Marshall Islands      Hull 1155 (Cancelled – April 2009)
82.    Cratylus Challenge Inc.    Marshall Islands      Hull 1129 (Cancelled – April 2009)
83.    Protagoras Challenge Inc.    Marshall Islands      Hull 1119 (Cancelled – April 2009)
84.    Lycophron Challenge Inc.    Marshall Islands      Hull 1106 (Cancelled – April 2009)
85.    Thrasymachus Challenge Inc.    Marshall Islands      Morgiana (Cancelled – April 2009)
86.    Hippias Challenge Inc.    Marshall Islands      Fernandina (Cancelled – April 2009)
87.    Prodicus Challenge Inc.    Marshall Islands      Pompano (Cancelled – April 2009)
88.    Gorgias Challenge Inc.    Marshall Islands      Ventura (Cancelled – April 2009)
89.    Kerkyra Traders Inc.    Marshall Islands      MapleValley (Cancelled – Jan. 2009)
90.    Arleta Navigation Company Limited    Malta      Xanadu (Sold – Sept. 2010)
91.    Iguana Shipping Company Limited    Malta      Iguana (Sold – Jan. 2010)
92.    Lotis Traders Inc.    Marshall Islands      Delray (Sold – Feb. 2010)
93.    Mandarin Shareholdings Limited    Marshall Islands      Geden Hull 003 (Cancelled – Jan. 2009)
94.    Mensa Shareholdings Limited    Marshall Islands      Geden Hull 002 (Cancelled – Jan. 2009)
95.    Belulu Shareholders Limited    Marshall Islands      Hull No. 1128 (Cancelled – Jan. 2009)
Ocean Rig subsidiaries    Country of
Incorporation		      Activity/Vessels
96.    Ocean Rig UDW Inc (formerly Primelead Shareholders Inc)    Marshall Islands      Holding Company
97.    Ocean Rig AS    Norway      Management Company
98.    Ocean Rig UK Ltd    UK      Management/Employment Company
99.    Ocean Rig Ltd    UK      Holding Limited
100.    Ocean Rig Ghana Ltd    Ghana      Operating Company
101.    Ocean Rig Canada Inc.    Canada      Employment Company
102.    Ocean Rig North Sea AS    Norway      Employment Company
103.    Ocean Rig 1 Shareholders Inc.    Marshall Islands      Holding Company
104.    Ocean Rig 2 Shareholders Inc.    Marshall Islands      Holding Company
105.    Drill Rigs Holdings Inc.    Marshall Islands      Holding Company
106.    Drillships Investment Inc.    Marshall Islands      Holding Company
107.    Drillships Holdings Inc.    Marshall Islands      Holding Company
108.    Kithira Shareholders Inc.    Marshall Islands      Holding Company
109.    Skopelos Shareholders Inc.    Marshall Islands      Holding Company
110.    Drillship Hydra Shareholders Inc.    Marshall Islands      Holding Company
111.    Drillship Paros Shareholders Inc.    Marshall Islands      Holding Company
112.    Ocean Rig Operations Inc.    Marshall Islands      Holding Company
113.    Primelead Limited    Cyprus      Holding Company
114.    Ocean Rig Black Sea Operations BV    The Netherlands      Operating Company
115.    Ocean Rig Drilling Services Cooperatief U.A    The Netherlands      Holding Company

116.    Ocean Rig Black Sea Cooperatief U.A    The Netherlands      Holding Company
117.    Ocean Rig Deep Water Drilling Ltd.    Nigeria     
118.    Ocean Rig Drilling Operations B.V.    The Netherlands      Operating Company
119.    Ocean Rig UDW LLC    Delaware      Marketing Company
120.    Ocean Rig UK Ltd. Turkey Branch    Turkey      Branch Office
121.    Ocean Rig 1 Inc.    Marshall Islands      Leiv Eiriksson
122.    Ocean Rig 2 Inc.    Marshall Islands      Eirik Raude
123.    Drillship Hydra Owners Inc    Marshall Islands      Corcovado
124.    Drillship Paros Owners Inc.    Marshall Islands      Olympia
125.    Drillship Kithira Owners Inc.    Marshall Islands      Poseidon
126.    Drillship Skopelos Owners Inc.    Marshall Islands      Mykonos
Other companies    Country of
Incorporation		      Activity
127.    Wealth Management Inc.    Marshall Islands      Cash Manager
128.    Pounta Traders Inc.    Marshall Islands      Investment Company
129.    Sunlight Shipholding One Inc    Marshall Islands      Cash Manager
Companies under liquidation    Country of
Incorporation		       
130.    Ocean Rig 1 AS    Norway     
131.    Ocean Rig 2 AS    Norway     
132.    Ocean Rig USA AS    Norway