The speaker characterizes the title creature as "the ship of pearl" and hopes eventually to be free, "Leaving thine outgrown shell by life's unresting sea," in, FTP, this poem by Oliver Wendell Holmes.
This poem references a line about Triton in Wordsworth's "The World Is Too Much With Us" in describing a clear note born by dead lips after the poet thanks the title figure for its heavenly message.  The first verse likens the title figure to a "venturous bark" with "purpled wings," and the second verse laments "its sunless crypt unsealed" and "its irised ceiling rent."  In the final stanza the poet enjoins his soul to "build thee more stately mansions," in imitation of the title creature's "silent toil / That spread his lustrous coil."  The speaker characterizes the title creature as "the ship of pearl" and hopes eventually to be free, "Leaving thine outgrown shell by life's unresting sea," in, FTP, this poem by Oliver Wendell Holmes.
This poem references a line about Triton in Wordsworth's "The World
"The Chambered Nautilus"