Quick ratio of main-engine fuel at two speeds using V^n scaling. Screened separately from the voyage-slow-steaming page for one-liner use.
Formula
$$ \frac{F_\text{new}}{F_\text{ref}} = \left(\frac{V_\text{new}}{V_\text{ref}}\right)^n $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $V_\text{ref}, V_\text{new}$ | Speeds | kn | operating plan |
| $n$ | Speed exponent (3 default) | - | empirical |
| $Ratio$ | New-to-ref fuel fraction | - | result |
Sources
- MAN ES - Basic Principles of Ship Propulsion.