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v3.26.1

Subsequent events - Vessel sales (Details) - Sale of Vessels $ in Millions | 1 Months Ended
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Mar. 31, 2026 USD ($) vessel | Feb. 28, 2026 USD ($) | Jan. 31, 2026 USD ($)
2023 $1.0 Billion Credit Facility |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Repayments of non-current borrowings | $ 20.2 |  |
2023 $1.0 Billion Credit Facility, Revolver |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Reduction in amount available under revolving portion of facility | $ 10.8 |  |
Vessels | STI Seneca and STI Osceola | MR |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Number of vessels in agreement to sell | vessel | 2 |  |
Proceeds from sale of vessels | $ 35.0 |  |
Vessels | STI Solidarity | LR2 |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Proceeds from sale of vessels | $ 60.0 |  |
Vessels | STI Lavender | LR2 |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Proceeds from sale of vessels |  |  | $ 61.2
Vessels | STI Goal and STI Gallantry | LR2 |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Proceeds from sale of vessels |  | $ 52.3 |
Vessels | STI Seneca, STI Osceola and STI Solidarity | 2023 $1.0 Billion Credit Facility |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |
Number of vessels, released from collateral | vessel | 3 |  |

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