More evilness:
Paired intervals
50-40-30-20-10-20-30-40-50 cal intervals. (You do a 50cal row, partner does a 50cal row, etc).
Having an off-day didn't help. Normally I can happily cruise at 1100-1200cal/hr, but today that was just about my anaerobic threshold. My partner was a rowing monster, happily motoring at 1500-1600ca/hrl, which also meant that my 'breaks' were shorter than my efforts. Last set I was at 800cal/hr and was dying.
Total time was 28:04