RiverTough Conversion Sees Impala Operations Unaffected by El Niño River Levels Thordon Bearings has successfully completed the oil to water-lubricated tailshaft bearing conversions of the first four of 15 Impala Terminals Colombia- operated tug/tow boats. Impala Zambrano, the first of 15 triple-screw and twin-screw pusher boats scheduled for oil-to-water conversion, was retrofitted in July 2015 with a Thordon RiverTough bearing and TG100 shaft seal combination. Three triple-screw and one twin-screw pusher vessels have since been converted and Thordon’s Colombian distributor Delta Marine and River Services will now work on the next vessels in the series. All 15 tug/towboats are scheduled for conversion by the end of 2017. Axel Swanson, Thordon Bearings’ Business Development Manager, expla

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