Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: He had been a surgeon-superintendent of ships taking convicts to New South Wales and Van Diemen's Land (now known as Tasmania).

He was the main surgeon on ships with prisoners going to New South Wales and Van Diemen's Land.