King Daniel Into Darkness wrote:
"Heavy Cruiser" comes from Franz Joseph's Star Fleet Technical Manual, pages of which were used as display graphics in movies I - III. "Heavy Cruiser" is particularly visible in STIII, when Chekov reports the break-in to Spock's quarters.
Thanks. I had that FJ Tech Manual back in the day and most likely noticed that screen in ST III as well. Hence my confusion as to what source I had first seen that term.