When I visited Barry and Karens' Sarabi (56' KHSD catamaran), they showed me how they prefer to handle the anchor. No load from the anchor on the bow tube at all. They pretty well tested it during their lap around the Pacific. The anchor and chain roll through the bridle and roller. Bridle is attached to the forebeam foundations.
Neat Anchor System
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How is the load from the anchor transferred to the bridle when the anchor is deployed?