ShipCalculators.com

Zig-Zag - Second Overshoot Check

Second overshoot of a 10°/10° zig-zag compared to the IMO MSC.137(76) criterion - typically limit = first-overshoot limit + 5°.

Zig-zagOvershootIMO
Loading calculator…

Formula, assumptions, and limits

α2α1lim+5°\alpha_2 \leq \alpha_1^{lim} + 5°
SymbolMeaningUnit
α2\alpha_2Second overshoot angledeg
L/VL/VLength-speed ratios

Source: IMO MSC.137(76)

In short

Second overshoot of a 10\u00b0/10\u00b0 zig-zag compared to the IMO MSC.

Learn the theory Seakeeping: Ship Performance in Waves