title_body: Has any conlang ever replaced the use of a pidgin?
upvoted_answer: Basic English is minimal in that it limits the number of words in the language (though not as extremely as Toki Pona). It was intended to be an international auxiliary language (although it never really caught on).
  
  The language was used in 1945 in order to quickly teach Chinese sailors to understand naval orders. This was reported at the time in a Time magazine article (paywall beyond first two paragraphs; the reference to the article comes from Wikipedia).