Slash, tex, thanks for the kind words
Rolex, you've lost me here... I've got something on each wing by the red box outboard of the cannon. But they're not mirrored. I've then got something on the tail "Be sure to have sunk" that has a character that looks like the image you posted, but its not on the wings.
Can you clarify which character is wrong? I hand-drew them based on a lower-resolution image, but there's no guaranteeing the image was 100% either.
EDIT: Ah, the wings characters are mirrored, well I'll be. I can fix that, though. However, my characters don't look anything like the one you posted. Is just that character reversed? Or is the entire string supposed to be reversed? Any other info on how that text should look would be great.