Well, if you're going to be specific about it, these are the ones that were forgotten.

FFII
  • Cid's Airship
  • Paramekian Warship Dreadnought
FFIII
  • Cid's Airship
  • Viking Sailing Ship Enterprise
  • Salonian Transforming Airship Nautilus
  • Giant Battleship Invincible
FFIV
  • Red Wings of Baron
  • Cid's Airship Enterprise
  • Baronic Airship Falcon
  • Magical Ship Great Whale
FFV
  • Ronkan Airship
FFVI
  • Setzer's Casino Ship Blackjack
  • Daryl's Airship Falcon
FFIX
  • Tantalus Theater Ship Prima Vista
  • Dalian Cargo Ship
  • Alexandrian Flagship Red Rose
  • Cid's Experiment Hilda Garde II
  • Cid's Prototype Hilda Garde I
FFX
  • Ancient Machina Airship