GUAM – Three castaways stranded for a week on a desert island in the western Pacific Ocean were rescued after a US Navy aircraft searching for them spotted palm fronds that the trio used to spell out the word “Help” on a sandy beach.

The men, all in their 40s, were found in good health on April 9 on Pikelot Island, an uninhabited, 12.9ha islet covered by palm trees, about 667km south-east of Guam, the US Coast Guard said in a statement on April 11. The men’s identities and nationalities were not released.

The trio’s saga began on March 31 when they embarked on a voyage in a 6m open skiff equipped with an outboard motor from Polowat atoll, some 100 nautical miles east of where they were found, the coast guard said.

Six days later, after the experienced mariners failed to return, their niece alerted the authorities and the coast guard and navy began a search and rescue operation. The initial search area spanned more than 78,000 sq nautical miles.

A day later, a US Navy P-8 Poseidon aircraft spotted the makeshift “Help” sign written out with palm leaves and began the rescue effort, the coast guard said.

“This act of ingenuity was pivotal in guiding rescue efforts directly to their location,” US Coast Guard Lieutenant Chelsea Garcia said in the statement.

While stranded on the island, which is part of the Federated States of Micronesia, the men had access to food and water. They also recovered their damaged skiff.

A coast guard photograph showed two small covered shelters near the “Help” sign.

The New York Times reported that this was not the first time castaways had been rescued from the island. About four years ago, three missing sailors were found there after they wrote “SOS” in the sand. REUTERS