The Navy Anchor is a tried-and-true design for digging in and staying set. Navy anchors work well in rocky environments and can easily penetrate weeds. The shank's reverse action makes it simple to retrieve a fouled anchor. The weights listed are estimates. Navy anchors are effective in rocky environments and may easily penetrate weeds. The reversing movement of the shank allows a fouled anchor to be faster and readily recovered. For convenient storage, the stock folds flat along the shank. Cast iron with painted aluminum or black vinyl finish guides the chain for optimum results.