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OTHER COMMITMENTS AND CONTINGENCIES (Tables) | 12 Months Ended
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Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract] |
Assets pledged as collateral | Assets pledged
(in thousands of $) | 2018 |  |  | 2017 |
Book value of vessels secured against long-term loans | 3,244,291 |  |  | 2,032,747 |

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