Final answer:
The phrase "until the blue sea hushed him" suggests that the sea has become calm and quiet, settling into stillness and causing silence.
Step-by-step explanation:
The phrase "until the blue sea hushed him" implies that the sea became calm and quiet. This figurative language suggests that the tumultuous and perhaps previously noisy sea has now settled, bringing stillness and silence. The use of the word 'hushed' is key here, as it conveys a sense of quieting down or causing someone to become silent. The intensity and violence that may have characterized the sea earlier have subsided, which is also supported by the surrounding excerpts that describe the sea's changing conditions and the moments of peace or violence experienced by the characters at sea.