NES/Famicom Game Name

[GForce]

When I look at the master list of NES and Famicom games, some of the first games are 1942, 1943, and 1945. I have never heard of 1945 or found it on any game list. Can someone explain the origin of this game or if it goes by another name? I'm working on completing all the games I can and shoot em up games are perfect to play while I'm at work. Thanks for any info.

[safaribans]

I'm pretty sure it's a pirate cart (hacked version of Sky Shark)

[ReyVGM]

There is a real 1945 though, but for arcades and not by Capcom.

There's also 1941, 194XX, 1943Kai