http://www.marinelink.com/news/foss-tug-conversions-boost-power-and-maneuverability/foss-tug-conversions-boost-power-and-maneuverability303258
Foss Tug Conversions Boost Power and Maneuverability
Two Foss Maritime conventional twin-screw harbor service tugs have been repowered and converted into azimuthal stern drive (ASD) vessels.