Abby in the hatch: Last night sailing in 20-25 knots of breeze, doing 25+ boatspeed. Appears we must have hit something with one of the rudders, and broke the tiller arm. Abby and Louis in the stern working on repairing the tiller arm. "Try some mallet?" Abby taps with the mallet. Louis: I was off watch, and got woken up that we'd broken the tiller arm... Two boats have sheered. Came back with Abby and put the spare one on from the emergency kit. Nothing major, but probably lost a mile or so, sailing with only one rudder until the leeward rudder was fixed. Abby: At first light this morning we checked with the endoscope, and it looks like the rudder is not damaged. A reminder that there's lots of stuff we can hit.