After firing a rocket at an amphibious vehicle heading to Yorke Bay, York decided to withdraw his section and proceeded to booby trap their Carl Gustaf 8.4cm recoilless rifle, before paddling their Gemini assault boat north across Port William. As he did so, York said they were chased and fired upon by an Argentine destroyer (either the corvette ARA "Drummond" or "Granville"). His initiative led to the Gemini reaching an anchored Polish fishing vessel and hiding the small assault boat under her shadow. They patiently waited for a chance, before moving to the shore and landing on a small beach. Argentine sources say the "Drummond" laid down suppressing fire on a cove north of Port William where unidentified personnel had been spotted, in support of "Cabo San Antonio", whose crew had reported a "missile falling short to starboard", apparently launched from the area. Other Argentine navy's reports claim that the action at Port Williams was carried out by .