Propulsion: Seatorque Boss Enclosed Shaft System STM3 Series

The Seatorque Boss Enclosed Shaft System was introduced in 2006, but having been contacted by UK representative H4 Marine, it was decided to review this innovative propulsion system representing power development efficiency. The Boss Enclosed Shaft System has been designed in house by Seatorque’s engineering department, and the system offers ease of installation, effortless mechanical alignment, reductions in labour cost, and a 2 year or 250 hour limited warranty. With boat builders continually looking for time saving solutions during production Seatorque believes that the Boss Enclosed Shaft System can offer considerable savings and benefits. The boat owner gets a quieter boat with less service and maintenance. In short the advantages to the manufacturer and boat owner are multiple including: noise vibration reduction, routine maintenance minimised, no dripping stuffing box with bilges kept dry, increased axial stiffness greatly reducing the level of damage or risk of bending a shaft during a grounding, engine and transmission service life increased, overall propulsion efficiency improved by approximately 8% allowing for greater fuel economy at cruising speeds with increased operational range, improved hull harmonics due to reduced vibrations helps attract fish for the sportsman, construction costs slashed by 2/3Rd's, elimination of any intermediate strut cutlass bearings, no installation alignment difficulties, no post delivery engine re-alignment issues, total drive train supplier consolidation for the builder and is suitable for power and sail boats. The Seatorque Boss Enclosed Shaft System STM3 is available in 8 sizes from 100 up to the 400 model. So far its has been used by some renowned builders included Donzi Roscioli Yachts, Egg Harbor, Ocean Yachts and Fleming.

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