Admiral Hornblower (アドミラル・ホーンブロワー, Adomiraru Hōnburowā): An active pirate ship with a Letter of Marque, formerly a high-speed transport ship, which acted as a dummy ship in the battle over Garnet A.
The submersibles belonging to Professor Mugen's associates include the following, used for Flint's puzzle; Hora, Ryu-Oh, Ballade, Éclat, Octopus II and Day-Tripper, along with the name of Kanata's toy ship, Kanatamaru .
Prince of Stonewall (プリンス・オブ・ストーンウォール, Purinsu Obu sutōn'u~ōru): A luxury liner and a customer of the Bentenmaru.
Tunic Tudor 60 (チュニック・チューダー６０, Chunikku Chūdā 60): A large transport ship operated by King's Transfer Inc. .
The names of the ships shown on a list of ships docked at the relay station during the electronic attack on the Odette II, follow common themes; the warship names are those of countries, the cargo ships are named after figures from Japanese mythology, and the passenger ships are named after Greek deities .