Complex sentence: But Transfield did not return the ship until May 11, because with two weeks to go they got a job to carry coals from Quingdao, China across the Yellow Sea to Tobata and Oita, Japan.
Split into simpler sentences: But Transfield did not return the ship until May 11. With two weeks to go they got a job to carry coals from Quingdao, China across the Yellow Sea to Tobata and Oita, Japan.