Multi-purpose Tug

Asenav (Valdivia, Chile) delivered the ninth 32.5m azimuth stern drive tug to Sociedad Naviera Ultragas. The new vessel has increased power and better manoeuvring capabilities by employing azimuthing thrusters instead of the traditional twin screw configuration. “Chan Chan” is a multi-purpose vessel, which provides harbour and ocean towing as well as transporting crews and supplies (water and fuel oil) to ships offshore.

Twin Schottel SRP 1212 units with fixed propellers inside nozzles are driven by 2.350 hp Caterpillar 3606 diesel engines, achieving a steady bollard pull of 62 tonnes and a speed of about 13 knots. The tug has a Brattvaag SL80-2T 81 tonnes anchor towing winch, a Steen 7913 rope reel windlass winch and a Seebeck SWL 65 tonnes quick release-towing hook. In addition to its towing capabilities this tug is able to deliver 64 cu.m. of fuel oil as well as 64 cu.m. of fresh water per hour.Special attention was paid to reduction of a structure borne noise and vibration. Engines and crew spaces are elastically mounted on vibration dampers which helped to substantially reduce the noise levels to 70 dB(A).