Were 2,000-pound bombs permitted in Project B?

Were 2,000-pound bombs allowed under the test rules?

They appear to have been allowed, but the heaviest bombs could be dropped only twice against the battleship.

The permission to use 2,000-pound bombs is treated cautiously. The wording of the rules appears to allow them, while limiting use of the heaviest bombs to two drops against the battleship. That makes the number of drops central to the later breach. Permission to use a heavy bomb did not authorize repeated attacks without the agreed limits.