max col in a table subset

hi i have a table as follows:

col1 col2 col3
2 BB 2
1 AB 3
3 CA 3
1 AC 1
2 BA 4
3 CB 2
2 BC 6
1 AA 2
3 CC 5

i want to output the whole row of each unique col1 where its col3 is max, so that i will get the ff result set
1 AB 3
2 BC 6
3 CC 5

i have an idea which is to use a cursor but i don't know the best/fastest way of doing it.
thanks heaps in advance!select col1
, col2
, col3
from daTable as foo
where col3 =
( select max(col3)
from daTable
where col1 = foo.col1 )