Mr. Stravaganza:
MY BATTLESHIP GUESS IS! D 7! and F 7!

Taken:
A: 1, 3, 4, 9
B: 1, 2, 3, 9
C: 3, 4, 7
D: 3, 5, 6, 7
E: 1, 2, 3, 7
F: 1, 3, 7
G: 4, 5, 6, 9
H: 1, 2, 5, 8

Also, Thanks Mr. S!