How does The Nigger of the Narcissus develop the theme of The Indifferent Sea?

The Nigger of the Narcissus by Joseph Conrad develops The Indifferent Sea across the chapters the companion marks for this theme.

The sea is portrayed as a vast, indifferent force that dwarfs human concerns, testing the crew's endurance and humility, while granting neither reward nor punishment but simply existing beyond moral judgment.

The storm's fury and the ship's struggle emphasize the sea's indifferent power over human life.