laeva külgkalle. Kreeni tekitavad lasti, ballasti või varude ebaühtlane paigutamine, lainetuse ja tuule mõju, reisijate kogunemine ühele pardale, laevaruumide ebasümmeetriline täitumine veega avarii korral, inertsjõudude mõju laeva pöördel jms. Kreeni mõõdetakse kaarekraadides.
the transverse inclination of a vessel due to the action of the wind, a greater weight upon one side, etc., usually transitory
... the level of the liquid in the tank may only be determined when the vessel has a zero trim and heel.
Power-operated sliding watertight doors shall have either:
... a centralised hydraulic system with two independent power sources each consisting of a motor and pump capable of simultaneously closing all doors. In addition, there shall be for the whole installation hydraulic accumulators of sufficient capacity to operate all the doors at least three times, i. e. closed-open-closed, against an adverse list of 15°.
