The tendency for the hull of a vessel to droop amidships when the crests of two adjacent waves pass under the bow and stern leaving the amidships portion of the hull in the trough with less support.
Sisenzo esidla ngokwenziwa sisiqu senqanawa sokujingisa embindini wenqanawa xa incochoyi yamaza ajongeneyo ingaphantsi komphambili nomva ishiya indawana yombindi wesiqu senqanawa esiphakathi komsantsa wamaza amabini singenanxaso ingako.