Marine Shackle Market Size, Share, and COVID-19 Impact Analysis, By Type (Bow Shackles, D-Shackles, Pin Shackles, Headboard Shackle, Screw Pin Shackle, Halyard Shackle, Piling Shackle), By Material (Stainless Steel, Alloy Steel, Carbon Steel), By Size (3/8, 5/8,1/2, 1, 7/8, By Vessel (Personal Watercraft and Sailboats, Passenger Vessels, Fishing Vessels, Service Vessels, Naval and Coat Guard Vessels, Cargo Vessels)