С2 rowing.

4min on, 3min off
2min on, 30sec off
1min on, 3min off
2min on, 30 sec off
4min on. Done!

1041 м,226 watt,1:55 / 500 м.
536 м,250 watt,1:51 / 500 м.
265 м,241 watt,1:51 / 500 м.
993 м,198 watt,2:00 / 500 м.