Today's interval session was a great success. Warm-up in under 5:00 minutes and then all 16 fast lengths at better than 2:00min/100 pace. I managed a few lengths in around 35s corresponding to a pace of 1:45min/100m. I'm impressed that my strokes/length averaged 20 for the first 12 fast lengths although in the final set it rose to 22. This shows that I was managing to apply some power.
The rests were a bit longer than scheduled to ensure that I had a clear length but I don't think that is all that important.