Poem about end of journey on ship taking years (7)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

ODE (poem), around the end letter of [journe] Y + SS (abbreviation for steamship, originally “screw steamer” from its screw propeller), then Y (abbreviation for years). Clue-as-definition (&lit): Homer’s ancient Greek epic poem about Odysseus’s ten-year sea journey home (with many adventures and interruptions) after the Trojan War.