Hull Performance - Speed Loss ISO 19030
Hull-performance deterioration estimate per ISO 19030-2 - average speed loss trended against reference period.
Performance rating
Acceptable
Formula, assumptions, and limits
ISO 19030 normalises for wind, waves, currents to isolate hull-condition contribution. 5 % speed loss ~ 12-15 % power increase. Paint + propeller polishing typical ROI 30-90 days.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Speed loss vs reference | kn | ISO 19030 |