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The U.S. Navy's new stealth destroyer, the future USS Zumwalt, assisted in the rescue of a fisherman who had a medical emergency early Saturday off the Maine coast, officials said.

The 600-foot, 15,000-ton Zumwalt — the largest destroyer ever built for the Navy — was out for sea trials when Coast Guard officials received a distress call from the fishing boat Danny Boy around 3 a.m. The distress call said the Danny Boy's captain was suffering from chest pains about 40 miles southeast of Portland, according to officials.

A Jayhawk helicopter responded from Air Station Cape Cod, but the crew determined it would be too dangerous to hoist the fisherman up due to the configuration of the fishing boat's deck.

A crew and small boat from the Zumwalt transferred the man to the destroyer's deck, officials said. The helicopter crew then hoisted the patient on board and transported him to shore, where he was taken to a hospital.

"Our main concern with this type of medical emergency is to recover the patient safely and transport them to a higher level care as quickly as possible," said Lt. David Bourbeau, public affairs officer at Sector Northern New England. "Fortunately the Zumwalt was operating in the area and was able to provide valuable assistance."

The Zumwalt left Bath Iron Works for sea trials on Monday.

Bath Iron Works will be testing the ship's performance and making tweaks this winter. The goal is to deliver it to the Navy sometime next year.

The Zumwalt is the Navy’s first surface warship to feature all-electric propulsion, which is powered by two gas turbines capable of generating 78 megawatts – enough electricity to light 780,000 100-watt light bulbs. That’s sufficient to handle the ship’s propulsion, weaponry and other electricity needs.

Built by Bath Iron Works at a cost of $4.3 billion, the Zumwalt is the first ship of a new class of high-tech destroyers. Its deckhouse is entirely enclosed atop the angular ship, which sits low in the water, like the iron-hulled steamship the USS Monitor, the first ironclad warship commissioned by the Union Navy, the Portland Press Herald reported when the ship pulled into Portland for supplies Thursday.

Wired magazine recently reported that the Zumwait stealth design and cost may mean only 2 or 3 of the ship's class may be built (instead of the original 32. How well the ship might perform in high seas is a concern that's been raised.