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Commitments and Contingencies (Details) $ in Thousands | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2019 item | Dec. 31, 2022 USD ($) item | Jul. 31, 2018 item | Sep. 30, 2017 item
Commitments and Contingencies |  |  |  |
Number of assumed off-hire days when each vessel will undergo scheduled dry-docking |  | 30 days |  |
Future gross minimum lease payments receivable |  | $ 596,529 |  |
Wartsila Greece | GasLog LNG Services |  |  |  |
Commitments and Contingencies |  |  |  |
Number of vessels under maintenance agreement | item |  |  | 9 | 9
Samsung Heavy Industries Co., Ltd | GasLog LNG Services |  |  |  |
Commitments and Contingencies |  |  |  |
Number of vessels under maintenance agreement | item | 11 |  |  |
Period of services to be provided (in years) | 6 years |  |  |
Number of vessels with ballast water management system installed | item |  | 7 |  |
Not later than one year |  |  |  |
Commitments and Contingencies |  |  |  |
Future gross minimum lease payments receivable |  | $ 278,115 |  |
Later than one year and not later than two years |  |  |  |
Commitments and Contingencies |  |  |  |
Future gross minimum lease payments receivable |  | 128,750 |  |
Later than two years and not later than three years |  |  |  |
Commitments and Contingencies |  |  |  |
Future gross minimum lease payments receivable |  | 87,467 |  |
Later than three years and not later than four years |  |  |  |
Commitments and Contingencies |  |  |  |
Future gross minimum lease payments receivable |  | 44,869 |  |
Later than four years and not later than five years |  |  |  |
Commitments and Contingencies |  |  |  |
Future gross minimum lease payments receivable |  | 25,487 |  |
Later than five years |  |  |  |
Commitments and Contingencies |  |  |  |
Future gross minimum lease payments receivable |  | $ 31,841 |  |

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