In herman melville’s mobydick, what causes the pequod to sink?

On the third day after Ahab finally sights Moby Di.ck, the great whale attacks the boat. Moby Di.ck rams the Pequod and sinks it. Afterwards, Ahab is caught in a harpoon line, resulting in his death. The sinking ship creates a vortex which begins sucking in everything that surrounds it, including the remaining whaleboats and men. The only survivor of this catastrophe is Ishmael.

the answer would be a

consonance, it has the repetition of the consonants in stressed syllables with different vowel sounds.