Columbus
Gates of Hercules
The Strait of Gibraltar—the western edge of the known world in 1492. Everything beyond was uncharted Atlantic.
Stars are gone
Without stars, no navigation. The mate is saying they're lost—celestial navigation was the only way to find position at sea.
Blanch'd mate
He's gone white with fear. This is the third time the mate speaks—watch how his terror escalates with each stanza.
Mad sea shows his teeth
The ocean personified as a predator. Notice how the mate's language gets more desperate—from prayer to theological despair to this animal fear.
A light! a light!
The famous lantern on shore—first sign of land after 33 days crossing the Atlantic. The quadruple repetition mimics the lookout's cry.
Star-lit flag unfurled
Anachronistic—Columbus sailed under Spanish banners, not the American flag. Miller is making this about American perseverance, not historical Spain.