When I first owned my boat, delivered it from Santa Cruz to Alameda. After a very pleasant sail up the coast was surfing in toward the Golden Gate bridge when I suddenly had almost no ability to turn to port. Thought no big thing, I'll just use the emergency tiller. Pulled it out of the cockpit locker, removed the deck plate covering the attachment point and figured everything would be fine, NOT!!!!!! The locking bolt on the quadrant hadn't been installed and the quadrant had rotated on the rudder shaft wiping out almost all port rudder. Could not over power the cable and chain steering to force the rudder to PORT. If the chain/cable steering is still attached to the rudder, over powering it is a major problem. Later, I disconnected the cables to the quadrant and the boat steered fine. An emergency tiller may not work if you don't disconnect the steering cables from the quadrant.