trimm - laeva asend vaikses vees. Trimmi iseloomustavad laeva süvis, diferent ja kreen. Kreeni ja diferendita laev on "tasasel kiilul". Kui ahtris on süvis suurem kui vööris, on laeval "diferent ahtrisse", kui vastupidi, siis "diferent vööri". Külje poole kaldunud laev on kreenis.
a vessel is said to be on even keel when her draft is the same at bow and stern
The emergency source of electric power shall be so arranged that it will operate efficiently when the ship is listed to 22,5° and when the trim of the ship is 10° from an even keel.