sentences:  The next day, the boat sank three Greek sailing vessels with demolition charges and by ramming in the Doro Channel.She initially attacked them on the surface with her deck gun, but it jammed after firing four rounds, so "Sickle" boarded the first ship, a caïque flying the Greek flag with the German occupation pennon.The ship was carrying a cargo of oranges and lemons, and sailors from "Sickle" brought a thousand of these to their submarine as an addition to their diet, then holed the caïque's hull, sinking it.