UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

NOTICE OF EFFECTIVENESS

Effective Date: February 20, 2018
Form: S-4
CIK: 0001451505
Company Name: Transocean Ltd.
File Number: 333-222894
CIK: 0001083269
Company Name: TRANSOCEAN INC
File Number: 333-222894-01
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