This set of model anchors is patterned on the US Navy's standard 30,000 pound anchors used on battleships, especially those of the Iowa class, South Dakota class and North Carolina class, from World War Two through Desert Storm. They likely would have been carried by the battleships of the Montana class.
Assembly instructions: remove all parts from the sprue, insert the shank through the bottom of the anchor. Do not glue the shank to the anchor. Insert the retaining pin through the small hole at the bottom of the anchor and glue in place. The shank will swivel freely.
These parts are designed for a tight fit. While producing exceptional detail, acrylic plastic is extremely brittle and breaks easily. Trim parts, if necessary, rather than force them into place.