NAIROBI, Kenya (AP) -- Somali pirates attacked the Maersk Alabama on Wednesday for the second time in seven months and were thwarted by private guards on board the U.S.-flagged ship who fired off guns and a high-decibel noise device.
A U.S. surveillance plane was monitoring the ship as it continued to its destination on the Kenyan coast, while a pirate said that the captain of a ship hijacked Monday with 28 North Korean crew members on board had died of wounds.
Pirates hijacked the Maersk Alabama last April and took ship captain Richard Phillips hostage, holding him at gunpoint in a lifeboat for five days. Navy SEAL sharpshooters freed Phillips while killing three pirates in a daring nighttime attack.
Four suspected pirates in a skiff attacked the ship again on Wednesday around 6:30 a.m. local time, firing on the ship with automatic weapons from about 300 yards (meters) away, a statement from the U.S. Fifth Fleet in Bahrain said.
An on-board security team repelled the attack by using evasive maneuvers, small-arms fire and a Long Range Acoustic Device, which can beam earsplitting alarm tones, the fleet said.
Vice Adm. Bill Gortney of the U.S. Naval Forces Central Command, said the Maersk Alabama had followed the maritime industry's "best practices" in having a security team on board.
"This is a great example of how merchant mariners can take proactive action to prevent being attacked and why we recommend that ships follow industry best practices if they're in high-risk areas," Gortney said in a statement.
However, Roger Middleton, a piracy expert at the London-based think tank Chatham House, said the international maritime community was still "solidly against" armed guards aboard vessels at sea, but that American ships have taken a different line than the rest of the international community.
"Shipping companies are still pretty much overwhelmingly opposed to the idea of armed guards," Middleton said. "Lots of private security companies employee people who don't have maritime experience. Also, there's the idea that it's the responsibility of states and navies to provide security. I would think it's a step backward if we start privatizing security of the shipping trade."
A Massachusetts Maritime Academy professor, who is also the father of a sailor who was on the Maersk Alabama during the first pirate attack in April, said about 20 percent of the ships off East Africa are armed.
The owners of the Maersk Alabama have spent a considerable amount of money since the April hijacking to make the vessel pirate-proof, Murphy said, including structural features and safety equipment. The most dramatic change is what he called a security force of "highly trained ex-military personnel."
"Somali pirates understand one thing and only one thing, and that's force," said Capt. Joseph Murphy, who teaches maritime security at the school. "They analyze risk very carefully, and when the risk is too high they are going to step back. They are not going to jeopardize themselves."
The wife of the Maersk Alabama's captain, Paul Rochford, told WBZ-AM radio in Boston that she was "really happy" there were weapons on board for this attack.
"It probably surprised the pirates. They were probably shocked," Kimberly Rochford. "I'm really happy at least it didn't turn out like the last time."
A self-proclaimed pirate told The Associated Press from the Somali pirate town of Haradhere that colleagues out at sea had called around 9 a.m. -- 2 1/2 hours after the attack.
"They told us that they got in trouble with an American ship, then we lost them. We have been trying to locate them since," said a self-described pirate who gave his name as Abdi Nor.
A U.S. Navy P-3 surveillance aircraft "is monitoring Maersk Alabama and has good voice communication with the vessel," said Lt. Nathan Christensen, the Bahrain-based spokesman for the 5th Fleet. The ship was heading for the Kenyan port town of Mombasa.
"The crew and the captain are safe," Amanda Derick, a spokeswoman for Maersk Line Limited in Norfolk said on Wednesday. "The appropriate security measures were taken. That's the main thing, everyone's safe."
Maritime experts said it was unlucky but not unprecedented that the Maersk Alabama had been targeted in a second attack.
"It's not the first vessel to have been attacked twice, and it's a chance that every single ship takes as it passes through the area," Cmdr. John Harbour, a spokesman for the EU Naval Force. "At least this time they had a vessel protection detachment on board who were able to repel the attack."
Phillips' ordeal last spring galvanized the attention of the U.S. public to the dangers of operating merchant ships in the Horn of Africa, one of the busiest and most precarious sea lanes in the world.
Underscoring the danger, a self-proclaimed pirate said Wednesday that the captain of a ship hijacked Monday had died of wounds suffered during the ship's hijacking. The pirate, Sa'id, who gave only one name for fear of reprisals, said the captain died Tuesday night from internal bleeding.
Former crew members of the Maersk Alabama say they asked the company to rename, repaint or reroute the ship after it was first attacked by pirates off the coast of Africa last spring.
John Cronan and Shane Murphy were on the freighter when it was attacked in April. They say that they feared and anticipated another attack and that the company didn't heed their request.
Cronan, of suburban Philadelphia, and at least one other crew member are suing Maersk in Texas. They allege the company was
negligent in sending the crew into known pirate territory with inadequate protection.
Maersk officials could not immediately be reached for comment on the allegations.