Joining Shackle with Pear Shape Pin (TYPE D16) The D16 series highlights GN Rope Fittings’ specialized mooring and anchoring solutions, specifically designed for high-performance rigging in the most demanding maritime environments. These components feature a distinctive pear-shaped pin engineered to provide a robust and secure connection for heavy-duty mooring applications. As a critical interface for offshore infrastructure, the D16 series reflects a commitment to technical precision and operational safety.