A rower may compete as a Master from the beginning of the year during which he or she attains the age of 27. A rower shall be placed in the age category corresponding to the age as of December 31, 2010. A crew’s age is determined by rounding down to the highest contained integer of the aggregate mean age of its rowers (For example, the age of a crew whose rowers have a mean age of 54.9 is 54, and thus is a D category boat).

Age categories
A Minimum age 27 or more
B Average age 36 or more
C Average age 43 or more
D Average age 50 or more
E Average age 55 or more
F Average age 60 or more
G Average age 65 or more
H Average age 70 or more
I Average age 75 or more
J Average age 80 or more