12 SAILBOAT RIGGING COMPONENTS CONSTITUTING STRUCTURAL PARTS OF SAILBOATS, NAMELY, JIB FURLERS, AND SAIL REEFING SYSTEMS COMPRISED PRIMARILY OF FURLERS, FURLING MANDRELS, LINK PLATES, EXTRUSIONS, LUFT PROFILES, BEARING MECHANISMS, LINE SPOOLS, CYLINDERS, PRE-FEEDERS, FEEDERS, CAGE ARMS, TURBULENCE STIMULATORS, ROD TERMINALS, HALYARD WRAP PREVENTERS, SHACKLES, PURCHASE BLOCKS, BOOM SECTIONS, SHEAVE BOXES AND BOOM VANGS