SURVIVORS (EPA) –Two ferryboat accident survivors float in the Malacca strait near Tanjung Karimun Island, Riau Province, Indonesia while waiting for rescuers.

JAKARTA, Indonesia (AP) – Rescuers returned to choppy waters off Indonesia's Sumatra island Monday to search for a dozen passengers still missing after a ferry sank in a storm.

Officials say 245 survivors were pulled from the sea and at least 29 others drowned.

The Dumai Express 10 sank Sunday in stormy weather about 90 minutes into an inter-island trip from Batam to Dumai in Riau, a province off Sumatra island in western Indonesia.

A second ferry ran aground nearby, but all its passengers were said to be safe.

Fishing boats and police patrols set out in lashing rain at first light Monday in search of 12 people reported missing, said local police chief Lt. Col. Anggaria Lopes.

Indonesian ferry accidents have killed hundreds of people in recent years. Boats are often overcrowded, and safety regulations are poorly enforced.

The vast country spans more than 17,000 islands, and boats are a popular and relatively cheap form of transportation.

The stricken ferry went down about 30 minutes after huge waves damaged its bow and water started seeping in, according to a report from the ship's captain, said Lt. Col. Edwin, the local navy chief.

A survivor, who only gave his name as Riki, said he escaped from the ship by breaking a window and was rescued by fishermen, the official news agency Antara reported.

"It was too fast ... and the ship crew did not tell us about the situation at all," he said. "We only managed to get out after I broke the glass window on the right side. That was the only way because there were many people jostling for the doors."

He said he saw some passengers jump into the sea without life jackets. Passing boats picked up scores of people took them to nearby islands for medical treatment.

Local television news showed two survivors, wearing life jackets, floating on the water.