Lesson plan

Code letters

Pisagua. Her code letters RJPT are flown on the jigger mast, above her ensign Code letters or ship's call sign (or callsign) were a method of identifying ships before the introduction of modern navigation aids. Later, with the introduction of radio, code letters were also used as radio call signs.

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Article summary

Pisagua. Her code letters RJPT are flown on the jigger mast, above her ensign Code letters or ship's call sign (or callsign) were a method of identifying ships before the introduction of modern navigation aids. Later, with the introduction of radio, code letters were also used as radio call signs.

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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Key claims and bibliography are generated from the same tracked claims and sources as the article page.