Table 2 Model input assumptions for calculating reductions to baseline committed emissions
From: Shipping and the Paris climate agreement: a focus on committed emissions
Measure | Input value | Low | Mid | High |
|---|---|---|---|---|
Speed | Slow speed improvement factor | 0.85 | 0.75 | 0.65 |
Year slow speed improvement starts | 2030 | 2024 | 2022 | |
Years until total speed improvement achieved | 10 | 5 | 3 | |
Technical and operational | Non-speed: improvement factor | 0.95 | 0.80 | 0.65 |
Non-speed: years until improvements achieved | 15 | 10 | 8 | |
Blending | Blending: year starts | 2030 | 2025 | 2022 |
Additional annual % of ships using blended fuel | 1 | 2 | 4 | |
Additional annual rise in % blended fuel = zero C | 1 | 2 | 4 | |
Zero-carbon fuel | Year zero-carbon fuel available for retrofit | 2035 | 2030 | 2025 |
Years till all ships retrofitted to use zero C fuel | 15 | 10 | 10 |