3 sentences

1. 巨大的船只在海中沉没了。

   jù​dà de chuán​zhī zài hǎi zhōng chén​mò le.

   The huge ship sank in the ocean.

   Source: Dong Chinese Dictionary

2. 泰坦尼克号于1912年沉没。

   Tài​tǎn​ní​kè Hào yú 1912​nián chén​mò.

   The Titanic sank in 1912.

   Source: Dong Chinese Dictionary

3. 泰坦尼克号因为撞上冰山而沉没了。

   Tài​tǎn​ní​kè Hào yīn​wèi zhuàng​shàng bīng​shān ér chén​mò le.

   The Titanic sank after hitting an iceberg.

   Source: Dong Chinese Dictionary