Super Thunder Blade/Stage 3

Stage
Stage 3 takes place on the seas with battleships and helicopters, which departs from the Stage 3 of Thunder Blade. The battleships are large, and cannot be destroy at all, but can be out-maneuvered easily. They are effectively like buildings that shoot at you.

Compared to the second stage, this stage is considerably easier, on par with the first stage. You simply have to watch out for the ships along the bottom, which will keep you flying higher up on the screen for safety reasons. Focus on shooting as many helicopters and jets out of the sky as you can to achieve a high score and obtain extra lives which you will definitely need in the next stage.

Mid-boss
Aqua-Lyzer Sub-Commander (SSA-01N) in western manual or AQUA-LYZER [SSA-01N] in japanese manual. Exclusive to Super Thunder Blade. Nuclear submarine that arrives from underwater. Watch out for the chain of fire as it emerges from the distance. Flying in a circular motion isn't just a good idea, it's pretty much essential for survival. Any attempt to hold still, or reverse course is extremely likely to result in your destruction.

Boss
U-JAC-001 Commander in western manual or U-JAC-001 [SRS-UJ-001] in japanese manual. Space aircraft. Somewhat different from Thunder Blade counterpart in missile launchers placement. In addition to the cannon fire, it contains guns that fire green energy waves. There is a small battery of guns in the middle of the craft, in the lower half, that are indestructible. The guns near the top half are clustered more closely together. Take out as many as you can as you approach the top half.