The Mariners were already spaceborne and interacting before the Imperia arrived, and each system used the prevailing customs of its leader planet in general communication.
EuropaIllyricum is the leader of the .
AsiaticaCappadocia is the leader of the , and the entire Mariner Federation as a whole.
Apricais the leader of the .
Most traditional Mariner naming traditions have been replaced by the Imperia tradition of tri nomina. For Mariners, the tria nomina looks like Given Name + System Designator + Planet Designator. Examples include:
- Ollie Apricus Mauretanius
- Miruna Europa Trinovanta
Shared customary codes and values
All Mariners share a common set of good luck talismans while aboard a vessel or ship:
- black cats; many sailors will embroider a cat's eye onto clothing, or even tattoo a black cat on their person
- cormorants are considered to be the spirits of lost loved ones
- mermaids may grant wishes if a sailor were to catch sight of one
- tattoos will protect the sailor by attracting the favor of various Saints.
All Mariners share a common set of taboos while aboard a vessel or ship:
- whistling aboard a ship with solar drives; the only exception to whistling being taboo is when the ship's cook does it
- when ships launch from an atmosphered planet, if the sun through the atmosphere appears red, it's bad luck to set sail
- taking passengers in general, especially those who are religious clergy, or have red hair
- setting sail on Friday
- leaving any equipment essential for a job unattended; for example, a solar engineer leaving their shielding goggles unattended