WESMAR will introduce a 50-square-foot stabiliser fin, designed for luxury, charter and super yachts, at the Fort Lauderdale Boat Show, Florida in October.
According to WESMAR, these new fins, coupled with its triple axis digital DSP4800 control electronics, reduce up to 90 percent of vessel roll. The fins have a neutrally buoyant design that adds lift, and are specifically designed with added strength and reliability to meet the high performance requirements of vessels up to 250 feet in length. The system features a high-speed triple-axis gyro system that uses a digital processor and proprietary programming to combine multiple-system capabilities. Three models, including an upgrade package for existing stabiliser users, are available.
WESMAR's technology changes the dynamics of roll-fin stabilisation by using digital signal-processing and a proprietary gyro to predict vessel behaviour. The system memorises a boat's roll characteristics to pre-empt rolling. The roll velocity, acceleration and the vessel's unique roll characteristics are delivered by digital link to WESMAR's closed proportional hydraulic system. A wheelhouse display shows real-time vessel roll and fin movement.
The fins are a composite structure with a fibreglass skin wrapped around high-density structural foam and a 17-4PH stainless steel shaft welded to a steel core plate, which WESMAR claims makes them almost indestructible. The exterior of the fin uses a marine-grade gel coat that provides a smooth finish and protection from the elements and is easily paintable to match the colour of the vessel. The fin shape used is to NACA 0015 standard fin profile and provides optimum lift to drag ratios and geometric size.
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