I guess that you have never heard or find it this in the net. In my country Sweden SAAB also developed a potentially great ship killer, It was the SAAB T 18B. During the War SAAB and the Flygvapnet studied the War doctrine whit warplane against ship and they realized that they needed a airborne ship killer. So then SAAB developed The T 18B which was a former twin engine bomber. during the development they had some problems whit torpeddropping. It was because those torpedo's we had wasn't sturdy enough to be dropped from a fast flying airplane. To solve that problem they mounted a 57mm automatic Boforscannon m/41A whit a magazine of 40 rounds, the cannon had a firinrate of 3 rounds per second and it shout targets far as 2 km. additional it also had 2 20mm hispaniolcannon whit 120 rounds each and a single 13 mm macinegun pointing forward. Secondary it also carried 1000 kg of bombs or else 8 British 8 cm rockets or Bofors 10,3 cm, 14,5 cm, and 15 cm, plus 2 18 cm rockets under the chin. The T 18 B had also a very advance bomb-aiming-device that allowed the plane to dive bombing its target whit an angel of between 30 0r 45 degrees. A system that exist now in all modern attack airplane. The T 18B come in service 1947, ma-by a little to late have in this discussion.