Currently, collision damage is not effected by shields.
I think it should stay this way.
Collsion damage not being effected by shields makes it possible to build balistic torpedos carryable by bomber ships that can damage large ships. These torpedos are not very accurate or powerful, but they allow a group of coordinated fighters to do damage to a large ship. These ships are easily destroyed by turrets still, and cannot be used by large ships easily, due to the need for rapid acceleration and breaking.
I think it should stay this way.
Collsion damage not being effected by shields makes it possible to build balistic torpedos carryable by bomber ships that can damage large ships. These torpedos are not very accurate or powerful, but they allow a group of coordinated fighters to do damage to a large ship. These ships are easily destroyed by turrets still, and cannot be used by large ships easily, due to the need for rapid acceleration and breaking.