Indonesian officials say dozens of ferry passengers were picked up Tuesday as rescuers battled high waves and bad weather to reach remaining survivors of a capsized ferry.

Officials say at least 30 people were plucked from the sea Tuesday, four days after the ferry went down in a Java Sea storm on Saturday.

Rescuers transport the body of a ferry disaster victim

More than 200 people have been rescued and 100 bodies have been found.  The ship was carrying some 600 people.

Persistent bad weather has frustrated efforts of a rescue fleet of navy ships, fishing boats and helicopters to reach remaining survivors.  Some still cling to life rafts and floating debris.

Air force helicopters are dropping food and water to stranded survivors who have been adrift for nearly four days.

The ferry was sailing from Borneo island to Java island when it sank.  Officials blame stormy weather.

The ship was slammed for hours by high waves, and survivors say it went down in minutes after dropping anchor. 

Ferries are a cheap and widespread means of transportation among Indonesia's 17,000 islands.

Some information for this report was provided by AP and Reuters.