Return-on-investment of a mid-docking hull cleaning - saves fuel via reduced hull roughness and fouling drag.
Formula
$$ \text{ROI} = \frac{\Delta m_F \cdot t \cdot P - C}{C} $$Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $\Delta m_F$ | Daily fuel reduction | t/day | noon reports before/after |
| $P$ | Fuel price | USD/t | bunker market |
| $C$ | Cleaning cost (diver or robot) | USD | contractor quote |
Sources
- BIMCO Biofouling Guidelines.