Skip to main content

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