Delivered-power estimate at a new speed using the Admiralty constant derived from trial data - the classical scale-up for preliminary design.
Formula
$$ P = \frac{\Delta^{2/3} \cdot V^3}{C} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $\Delta$ | Displacement | t | loading computer |
| $V$ | Speed through water | kn | log / GPS |
| $C$ | Admiralty constant | - | sea trial |
Sources
- Rawson & Tupper Vol 2 - Resistance.