The fourth man however is trapped in a separate part of the ship from his rescued shipmates.
First responders have "made contact" with remaining crew members; David Lee Miller reports.
According to the Coast Guard, the 656-foot Golden Ray - a vehicle carrier - listed, capsized, and had a fire on board on September 8. The search on Sunday was ultimately suspended when fiery conditions became too risky. Twenty members of the crew were rescued around 4 and 5 a.m., he said.
The sound of tapping led rescuers to the four people who had been trapped on a cargo ship that capsized off the Georgia coast on Sunday. The loading process went smoothly, and nothing seemed out of the ordinary, she said.More news: Team USA basketball vs. France, score
Officials say the other 20 people on board have been rescued, and that the crew mostly comprised Philippine and South Korean nationals.
The Golden Ray, which the Coast Guard said was transporting cars, is flagged out of the Marshall Islands and was headed to Baltimore, according to the website Vesselfinder.com.
Coast Guard Petty Officer 1st Class Luke Clayton says removing the ship will likely take weeks. That said, authorities still have plenty of work ahead of them.
Four crew members trapped in the belly of an overturned cargo ship waited for almost 36 hours in pitch darkness and oven-like heat, perched on pipes and railings above deep water before they were pulled to safety, coordinators of the rescues said Tuesday.
The Port of Brunswick, one of the busiest USA seaports for shipping automobiles, is now closed to vessel traffic, with an established emergency safety zone in St. Simons Sound.More news: Pixel 4 render hints at October 15 announcement date
In a video from the scene, Capt Reed heralded their safe rescue as the "best day" of his career. That hasn't been confirmed though by the Coast Guard.
The Foreign Ministry on Monday dispatched an eight-member rapid response to the site, and families of the rescued crew were expected to arrive in the United States on Tuesday.
The cause is still under investigation and the Georgia Department of Natural Resources is monitoring the coastal environmental conditions following the capsizing.
Those who were rescued were offered assistance by the International Seafarers' Center in Brunswick, Georgia, according to the center's director Vicki West.
Korean President Moon Jae-in sent thank you letters to the U.S. President Donald Trump and the Coast Guard for their efforts to save the crew members, according to the Blue House Tuesday. The cars on the ship were from Hyundai and Kia, a company official, who asked not to be identified because of the sensitivity of the matter, said on Monday.More news: London Stock Exchange gets £32bn Hong Kong bid
Officials stopped other ships getting within half a mile (0.8km) of the Golden Ray under an emergency safety zone set up by the coastguard.