Complex sentence: Unable to be docked there, her worst leaks were repaired and she put to sea again on the 13th, beginning a voyage of more than 9,000 mi (14,000 km) in search of complete repairs.
Split into simpler sentences: Unable to be docked there, her worst leaks were repaired and she put to sea again on the 13th. When the ship left Tjilatjap it was on the first leg of a voyage of more than 9,000 mi (14,000 km) in search of complete repairs.