When we were finally berthed in a port with good marine facilities, it was time to replace all of the chainplates. To do this, first remove the shrouds and/or stays. Be sure you know what removing the stay will do to the rig. If you’re in a marina or a calm anchorage, it’s likely that a keel-stepped mast will continue to stand by itself if any of the shrouds are removed. But if you have any doubts, run a halyard to take up the strain. Before removing forestays and backstays, you must arrange backups. For the backstay, we rig a bridle to hawse holes at the stern, and we attach the main halyard to the bridle. For the forestay, you could use an inner forestay, if your boat has one, or better yet, rig a halyard and tension it to take the forestay’s place. Half a dozen turns off a turnbuckle will loosen the wire enough so that the clevis pin can be pulled out.