I'm looking for the name of an old japanese syndicated cartoon?

Question

late 1960 vintage,whose spaceship looked like a battleship and a submarine?

Answer 1

You are probably referring to Star Blazers (Japanese title: Space Battleship Yamato), though it was from the '70s, not late '60s.

Answer 2

Astroboy, maybe
At least I remember him as being that way.

Or do you mean the 70s japanese cartoon brought to the US as Star Blazers? They had a star ship which looked like a built around a big gun. That's at
http://en.wikipedia.org/wiki/Star_Blazers