Row 4000 meters @ a 2 min 500 meter pace
Within the next 16 mins hang clean 50% of your body weight 21 times

Row 2000 meters @ a 2 min 500 meter pace
Within the next 8 mins hang clean 50% of your body weight 18 times

Row 1000 meters @ a 2min 500 meter pace
Within the next 4 mins hang clean 50% of your body weight 15 times

Row 500 meters @ a 2 min 500 meter pace
Within the next 2 mins hang clean 50% of your body weight 12 times

There's no rest here other than the time allowed for the hang clean.
Not everyone can make the numbers, do what you can safely, effectively.