Rowing Intervals 
Interval 1: 6 mins @ r18 (warmup), undefined rest
Interval 2: 4 mins @ r20, rest 2 mins
Interval 3: 3 mins @ r22 (power 10s at top of each minute), rest 90 secs
Interval 4: 2 mins @ r24m rest 1 min
Interval 5: 1 min @ r26, rest 30 secs
Interval 6: 1 min @ r28, 5 mins cooldown

You'll see a progressive increase in both rate and speed with each subsequent interval. Push through the feet at the catch and push the hands away at the finish. Find your power at the lower rates and squeeze your speed as you approach the r24 work. For these shorter duration efforts, the drag should be set between 125 and 130.