A supercruiser is a civilian class of ships that have the ability to operate away from support for years at a time
A cruiser is a ship capable of extended operations, not requiring regular resupply. Non-Military cruisers are heavy ships operated by megacorps, nations, and other interests, but are not armed.
The interplanetary cruiser ISS Livingstone was launched on a grandiose mission to tour every planet in the solar system, a technological tour de force of Technodyne Heavy Industries and SmartTek Technologies. It was an over-hyped media sensation that, predictably, failed to live up to expectations.