Possible Clues:

• Poem on ship heading for a port
• "The ___ File" (Forsyth thriller)
• Poems sadly less than half-written, due to port!
• Title city of a Forsyth thriller
• Battleship Potemkin mutiny port
• 'The ___ File' (Frederick Forsyth bestseller)
• City of western Texas
• City nicknamed 'Pearl of the Black Sea'
• O'Dea gets around the ship on the Black Sea
• Poems written when going over Ukrainian port