Assertion: polynesian navigation | /r/CapableOf | use navigational instruments
Facets:
Source sentences:
text: Polynesian navigation used some navigational instruments, which predate and are distinct from the machined metal tools used by European navigators (such as the sextant, first produced in 1730; the sea astrolabe, from around late 15th century; and the marine chronometer, invented in 1761).