The Convergence of Twain: Tone of the poem and how it is achieved

Upon analysis of this poem, I have come across two tones that the author creates within the poem. The first is that of a gloomy atmosphere conveyed through the author's diction using words such as "grotesque", "slimed", and "bleared and black." The author uses such words to describe the once luxorious and magnificent ship now at the bottom of the sea. The ship has now become worthless along with all its "jewels in joy designed." In addition to his gloomy tone of the present state of the ship, Hardy shifts to a warnful tone of the coming event. He describes the ships growth and progress as well as the iceberg's growth. These seemingly unrelated objects now meet after this warning in Hardy's next lines that depict the catastrophic event of their "intimate welding of their later history." Through his diction, Hardy is able to achieve both a gloomy, dark, and warnful tone in his poem.