Both Iona and Arvia are Excel Class ships with 19 decks, lengths of 345 m/1132 ft, beams of 42 m/138 ft each with capacity of 5206 - 6264 guests, Arvia is marginally heavier, however at 184700 GT compared with Iona's 184089 GT- not much difference, but she is a heavyweight in other ways too.