| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 |
| | 20-F | 20-F | 20-F | 20-F | 20-F |
| Revenues | | | | | |
| Vessel operating revenues | 347.9 | 343.4 | 164.5 | 120.0 | 77.2 |
| Vessel operating revenues growth | 1.3% | 108.8% | 37.1% | 55.4% | |
| Operating expenses | | | | | |
| Voyage expenses | -2.5 | -3.3 | -3.7 | -6.3 | -5.2 |
| Vessel operating expenses | -63.4 | -61.2 | -37.0 | -22.4 | -21.0 |
| Administrative expenses | 9.1 | 7.9 | 6.3 | 7.5 | 4.6 |
| Depreciation | -72.2 | -69.8 | -41.8 | -28.7 | -17.4 |
| Operating income | 200.6 | 201.2 | 75.6 | 55.0 | 29.0 |
| Operating margin | 57.7% | 58.6% | 46.0% | 45.9% | 37.6% |
| |
| Other income/(expenses) | | | | | |
| Interest income | 2.0 | 0.0 | 0.3 | 1.1 | 0.6 |
| Interest expense | -76.6 | -56.2 | -41.8 | -33.9 | -17.8 |
| Extinguishment of long-term debt | -16.1 | -1.2 | | -3.4 | |
| Gain/(loss) on derivatives | 79.7 | 18.4 | -25.2 | -1.6 | |
| Other financial items | -1.5 | 0.1 | -0.8 | -0.1 | -0.1 |
| Income before tax | 188.1 | 162.3 | 8.2 | 17.1 | 11.8 |
| Income tax expense | -0.1 | -0.1 | -0.1 | -0.2 | 0.0 |
| Net income | 188.0 | 162.2 | 8.1 | 17.0 | 11.8 |
| |
| Earnings per share: | | | | | |
| Basic earnings per share (in dollars per share) | $3.53 | $3.04 | $0.15 | $0.31 | $0.29 |
| Diluted earnings per share (in dollars per share) | $3.51 | $3.04 | $0.15 | $0.31 | |