Those modern-looking photographs are impressions, I seriously doubt those naval batteries could have or would have been fitted, the structural strengthening required would have rendered the aircraft unable to leave the ground and even if it did, what chance the recoil stalled the aircraft in its tracks?
Additionally, as turrets, does that imply that they can traverse? Fire those at an angle to the direction the a/c is travelling in and that's a one-way trip!
No mention is made of armour, either for the crew or for essential systems or where the enormous quantity of fuel was kept or how it would be protected. The Luftwaffe would have had a field day with it; 30 and 37mm cannons would have made short work of it.
An impressive feat of aero-engineering for the period but I wouldn't want to go to war in it.