IMO MSC.137(76) turning-circle criteria: Advance ≤ 4.5 L and Tactical Diameter ≤ 5 L at 35° rudder angle and service speed.
Formula
$$ \text{Advance} \leq 4.5 L, \quad \text{Tactical diameter} \leq 5 L $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $L$ | Length between perpendiculars | m | particulars |
| $Advance$ | Distance along original heading to 90° turn | m | sea trial |
| $Tactical Diameter$ | Max transverse distance at 180° turn | m | sea trial |
Sources
- IMO Resolution MSC.137(76).