Here are the possible solutions for navigator with a strait named for him clue
Answer
Clue
Relevancy
magellan
Clue
Navigator with a strait named for him
barents
Clue
Navigator William with a sea named after him
neko
Clue
Rocker Case who tweeted "If a dude called me a 'cougar' I'd be more likely to kill him bare-handed and shit him out in front of his parents than fuck him"
continentaldivide
Clue
It extends from the Bering Strait to the Strait of Magellan