Liquid transport refers to craft and systems designed to carry sophonts and cargo both above and below the surface of a liquid medium. For typical Terragens, the majority of such craft are designed to operate in a liquid water (H2O) environment, although craft have also been built to travel on and in other substances such as liquid methane, molten rock, and even the liquid hydrogen found deep beneath the surface of Jovian class worlds.
Lurkship - Text by M. Alan Kazlev Generally, a heavily armed and armoured, short-range hyperturing military vessel, capable of stealth operations in a hydrospheric and atmospheric environment for greatly extended periods of time. Subcraft or subships are similar but smaller and less well armed and equipped.
Omnicraft - Text by Todd Drashner Versatile mode of transport designed to operate and provide accommodations in a wide range of environments from planetary surfaces to interplanetary space.