Sydney - Two Australian navy patrol boats rescued 162 people from an asylum seeker boat in trouble in Indonesian waters and were taking them on Thursday to an immigration detention centre on a remote Australian island territory.
Three people required medical attention, including a man who suffered a heart attack and was resuscitated by military personnel, Australian Maritime Safety Authority spokesperson Jo Meehan said.
There were no fatalities, unlike recent incidents in which would-be migrants have capsized on their way to Australia.
On Tuesday, Australia and Indonesia agreed to strengthen communication during sea disasters and look into an exchange programme of search and rescue specialists to combat people smuggling.
Many asylum seekers travel to Indonesia first before aiming for Australian territory in rickety, crowded fishing boats.
The rescued wooden asylum seeker boat issued a distress call by satellite phone to Australian authorities on Wednesday morning and said it was taking on water, the maritime authority said.
Its initial location was 80km southwest of Panaitan, a small island off the western end of the main Java island. By afternoon, it had drifted within 290km of Christmas Island, Indonesian officials said.
The 162, believed to include Indonesian crew as well as asylum seekers, were transferred to the patrol boats late on Wednesday "due to concerns about the seaworthiness of the vessel", the maritime authority said. The authority had initially said 164 were aboard.
The precise problem with the boat was unclear, but Australian Home Affairs Minister Jason Clare said on Wednesday that the weather was "very rough".
Australian naval officers were transporting the rescued to Christmas Island, where migrants are held in a detention centre while their asylum claims are heard. The territory is nearer to Indonesia than to the Australian mainland and is a popular destination for asylum seekers.
Australian immigration authorities complain that people smugglers are becoming more audacious, telling asylum boat captains to telephone Australia for help hours after leaving Indonesian ports, The Australian newspaper reported on Thursday.
People smugglers often sabotage their own boats so that Australian authorities have to rescue them and shorten their risky journeys. They call Australian authorities because they don't want to be rescued by Indonesia.
The opposition has pledged to turn boats back to Indonesia if it wins elections next year. But the government warns that that strategy would jeopardise lives.
Three Afghan asylum seekers set fire to their boat in 2009 through fear of being turned back by the Australian navy, causing an explosion that killed five people.
Australia's debate over how to cope with the increasing flow of asylum seekers has intensified since two boats carrying Australia-bound migrants capsized in the last two weeks. More than 90 people are believed to have died when the boats sank in the Indian Ocean.
Australia is a common destination for boats carrying asylum seekers from Afghanistan, Iraq, Sri Lanka and other poor or war-ravaged countries.