Je was op zoek naar: rulningsperioder (Deens - Engels)

beregninger af det faktiske skibs og modellens rulningsperioder
calculations of actual ship and model rolling periods; and

dog må peakperioden højst være 6Öhs, hvis rulningsperioden for den beskadigede model er større end 6Öhs.
noting that if the rolling period of the damaged model is greater than 6vhs, the peak period is to be limited to 6vhs.