Washington: The US Coast Guard has extracted the last of four South Korean crew members who had been trapped in an overturned cargo ship off the coast of Georgia, US, since the weekend.

Beachgoers relax on Jekyll Island's Driftwood Beach as the Golden Ray cargo ship is capsized in the background. Credit:AP

"Rescue crews have extracted the final #GoldenRay crew member safely. All crew members are accounted for," the Coast Guard posted on Twitter.

The four South Korean nationals had been trapped after the ship tilted onto its side on Saturday night near the port of Brunswick, in the state of Georgia, according to the South Korean Foreign Ministry.

On Monday the Coast Guard had been working to rescue the remaining crew members in what they said was a "slow, but safe process." They are now all with emergency services and receiving medical care.