The Viking 54 O is a 16.61-metre current production model from Viking Yachts in the Open Express configuration. Viking publishes a 5.38-metre beam and 1.47-metre draft.
The model is listed separately in Viking's current official range. Fuel capacity is 5,625 litres and water capacity is 750 litres. Variant identity is preserved because Viking publishes it as a distinct model page.