Windlasses Are Not Designed To Hold High Loads While A Boat Is At Anchor. When The Windlass Is Not In Use And The Boat Is At Anchor, The Chain Should Be Secured Using A Chain Stopper Or The Rope Rode Should Be Attached To A Load-Bearing Point Such As A Cleat. Lewmar Has Created A Beautiful New Range Of Cast Stainless Chain Stoppers Made From 316 Stainless Steel, Perfect For Sleep-Filled Nights And Lazy Lunches. The 8, 10, 12, 14 And 16Mm Chain Stoppers Have A Safe Working Load (Swl) That Is Greater Than The Swl Of The Chain.