https://www.maritimepropulsion.com/news/stena-pax-vessel-with-613735
Stena’s Ro-Pax Vessel with Wärtsilä Propellers Obtains DNV Silent Operations Notation
Stena’s new Ro-Pax vessel, Ala’suinu, equipped with Wärtsilä propellers has received DNV’s Silent(E) notation, issued to vessels…