Am I on the right track?

Help me analyze this poem pls
TO A POET CAUGHT IN THE WILL OF THE SEA
... tell nothing
in the flush of your fear
speak no word that the sea may hear

trust to it no name call no one
enemy or friend utter not one sigh
to snag on a reef

or curl round the coral keep
furl song in your throat tales of fire
laughter and ice cram in your

brimful eyes confess nothing
in the crest of your fear
lock up your tongue

that when it chill fingers
reach deep to pluck out your heart
make no sound not one prayer

vault your voice
telling the wind nothing nothing
to the very end nothing...

i see some sense of isolation here
or maybe the poem relates to death/dying?
help me fully understand this pls (