此句成分分析及句子结构谢谢!详细点!

有两个句子组成,为转折关系.第一句：The first of the two ships to reach Java after the race had begun was the Thermopylae,
中the Thermopylae为主语,The first of the two ships to reach Java 目的状语,was谓语,after the race had begun 比赛开始后领先,
第二句
but on the Indian Ocean, the Cutty Sark took the lead.
中but连词,on the Indian Ocean地点状语,the Cutty Sark 主语