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Carrying values of vessels, vessels under construction, right of use assets for vessels and goodwill - Carrying value of vessels narrative (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 USD ($) vessel | Dec. 31, 2022 USD ($) vessel | Dec. 31, 2020 USD ($) vessel | Dec. 31, 2021 vessel
Disclosure of impairment loss and reversal of impairment loss [line items] |  |  |  |
Number of vessels | vessel | 1 |  |  |
Reversal of previously recorded impairment |  | $ 12,708 |  |
Vessels estimated useful life | 25 years |  |  |
Goodwill | $ 8,197 | $ 8,197 |  |
Vessels |  |  |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |  |  |
Number of vessels | vessel | 111 | 113 |  |
MR | Vessels |  |  |  |
Disclosure of impairment loss and reversal of impairment loss [line items] |  |  |  |
Number of vessels | vessel |  |  | 13 | 13
Impairment loss recognised in profit or loss, property, plant and equipment |  |  | $ 14,200 |
Reversal of previously recorded impairment |  | $ 12,700 |  |
Approximate age of vessels previously impaired | 10 years |  |  |

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- Definition The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 134 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_134_a&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 135 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_135_a&doctype=Standard -URIDate 2023-03-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2023-01-01 -Paragraph B67 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2023-en-r&anchor=para_B67_d&doctype=Appendix&subtype=B -URIDate 2023-03-23 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 54 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_c&doctype=Standard -URIDate 2023-03-23 + Details
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