Two of the crew were pulled to safety, however five still remain missing after one body was recovered, the British Coastguard confirmed to the BBC.
The two men were airlifted to safety by a four-man crew, which included the Duke of Cambridge -- second in line to the throne -- who is a Royal Air Force helicopter pilot, Fox News explains.
The coastguard received a mayday call at 2 a.m. local time from the Swanland cargo carrier ship located 20 miles northwest of the Llyn Peninsula, North Wales, after its hull cracked.
The ship, carrying eight people and 3,000 tons of limestone, capsized before rescue forces arrived, notes MSNBC.
"We know that at least some of them are wearing immersion suits and have strobe lighting with them, however sea conditions are challenging at best," Jim Green, a coastguard spokesman told News.com.au.
The British RAF, the Irish Coastguard and an Irish Naval ship are continuing to search for the missing five people.
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