Coos Subsector

Coos Subsector
Andwella Jungleblut Trelyn Coos style="width: 250px; height: 350px; border: solid 1px black;" map from Travellermap.com Hyperion
Sector	Vanguard Reaches
Capital	Coos
Number of Systems	27
Majority Control	Trelyn Domain - %
2nd Control	Non-aligned - %

Subsector C of Vanguard Reaches Sector, primarily claimed by the Trelyn Domain.

Description

A slice of the Tellerian Cluster (called the Telborne Spur) is located on the spinward border of the subsector.

Interestingly, the Trelyn Domain became what the Tellerian Cluster was intended at first to be and failed at: a bulwark from the Third Imperium to challenge Zhodani influence in the Vanguard Reaches.

Summary

Astrographic Features & Trade Routes

Trelyn Main. (Chart sourced from Traveller Map).

• Tellerian Cluster
  • Telborne Spur
• Trelyn Main

Trelyn Main

A number of worlds in the subsector are part of the eponymous Trelyn Main.

• This stellar grouping has 23 member systems.

The Main lies almost entirely within the Trelyn Domain, a strongly pro-Imperial state. The only systems on the Main that aren't members of the Domain are Fomor (a member of the Domain of Alntzar), and non-aligned Dictic, both in Far Frontiers Sector to coreward.

A basic chart of the Main is shown, right:

World Listing: 1116

21 Worlds in the Coos Subsector

Atrephar  •  Coos  •  Dysitin II  •  Dysitin III  •  Dysitin IV  •  Dysitin Prime  •  Egin XI  •  Emerling  •  Groote  •  Huad Yai  •  Isochort  •  Karelian  •  Kyzyl (VR 2302)  •  Maya  •  Perus  •  Surtun  •  Tithira  •  Toorif  •  Weslaco  •  Yalgoo  •  Yosordvyoth  •  

History and Background

Coos Subsector is the origin point of the Emerling Plague.

Pre-Trelyn nations here included:

• Karelian Association: Based on eponymous Karelian
• Dysitin Empire: Dysitin Prime was once the centre of a small empire controlling three nearby systems, but when its failing technology proved unable to feed its own people, much less support an interstellar state, in 959 it shed its colonies and joined the Trelyn Domain in return for assistance.

Polity Listing: 1116

• Trelyn Domain

To comply with the terms of its Imperial charter, the Allarton Corporation is theoretically limited to operating in the Trelyn Subsector. Trelyn Domain operations in Coos are run by its wholly-owned subsidiary, the Pan-Melesien Company.

Native Sophonts

The following species are believed to have originated in this area:

• Atrephari

Demographics

Significant populations of the following sophont races exist within this subsector:

• Humaniti
  • Solomani (many ultimately of Sindalian descent)
    • Huad Yai culture
  • Vlazhdumecta

• Non-Human
  • Atrephari
  • Droyne

Linguistic Topography: 1105

The following languages are among the most commonly used within this astrographic region:

• Riftian Galanglic: A dialect of one of the two primary languages of the Imperium.
• Oynprith: The ritualistic, ceremonial language spoken by Droyne communities across Charted Space.
• Vilani: One of the two official languages of the Third Imperium.
• Vlazhdumecta: The language of the Vlazhdumecta people. Many dialects exist.

Major Historical Events Timeline: 1116

These are some of the more important historical events that have affected this subsector:

• -300,000: Ancients active. Droyne arrive on Yosordvyoth and Bauxia.
• -1582: Sindalian Empire dissidents travel across the sector.
• -1480s: The Huad Yai outpost is built as a refuelling station for ships venturing between Corella and Sindalian Diaspora settlements to spinward.
• 400: First Wave Imperial settlers begin to arrive in the coreward Vanguard Reaches.
• 605: The 'Great Pulse' of Imperial settlers begins, during the turmoil of the Frontier Wars and Civil War.
• 613: The Eslyat gain jump drive technology from reverse-engineering a misjumped Zhodani vessel.
• 626: The Driantia Steblenzhtia or Zhodani Colonnade Province is founded.
• 710: The Tellerian Cluster settled as an Imperial counterweight to the Colonnade.
• 941: The Allarton Corporation is formed at Capital to settle and develop the Trelyn Domain.
• 980: The Trelyn Domain becomes an Imperial client state under Grand Duke Ardesh Varen.
• 995 to 1065: The Imperial Second Survey.
• 1065: The Second Survey is published. Information about the region becomes widely available.
• 1075: Hyperion Lines gains control of Hyperion, establishing the Hyperion League.
• 1080: Emerling Plague ravishes parts of Trelyn space.
• 1089: The Council of Worlds establishes limits to the conflict in the Tellerian Cluster.

References & Contributors / Sources

Alternate Versions:

• Paranoia Press (1991)
• T5 Atlas of the Imperium: Second Survey (FFE)

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This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Mongoose Publishing or by permission of the author. The page history lists all of the contributions.

• Paranoia Press, Vanguard Reaches
• Paranoia Press, Vanguard Reaches, 1991 online updates by Chuck Kallenbach
• Geir Lanesskog. The Spinward Extents (Mongoose Publishing, 2022), .
• TravellerMap T5SS Data
• J. Andrew Keith, Marc Miller, John Harshman. Aslan (Game Designers Workshop, 1984), . (named but no further details)
• Classic Traveller Alien Module 4: Zhodani (named but no further details)
• MegaTraveller Alien - Solomani & Aslan (dot map provided)