Dyrnwyn (world)

Dyrnwyn/Sword Worlds (Spinward Marches 1522) Milieu 1116 B958812-A Starport B Good: Spacecraft Construction, Overhaul, Refined fuel Size 9 Large (14,400 km, 1.03g - 1.33g) Atmosphere 5 Thin Hydrographics 8 Wet World 80% Population 8 Moderate (200 million) Government 1 Company/Corporation Law 2 Low Law (no energy weapons) Tech Level A Early Stellar (jump drive)
See also	UWP
style="width: 220px; height: 250px;" Jump map from Travellermap.com
System Details
Primary	K4 V M8 V
Worlds	7
Gas Giants	1
Planetoid Belts	0
Cultural Details
Government	Company or Corporation
Law Level	Low
Cultural Extension	4B16
Army Size (BEs)	1500
Economic Details
Technology Level	10
Economic Extension	B7C-1 Resources B Abundant Labor 7 Moderate (20 million) Infrastructure C Very extensive Efficiency -1 Average
Importance Extension	3
Resource Units	832
GWP (BCr)	732
World Trade Number	5
Trade Volume (MCr/year)	15,720
Starport Details
Classification	Class-B
Port Size	5
Building Capacity (Tons)	160,000
Port employees	2,160
Port passengers (annual)	240,800

Dyrnwyn has a ideal environment and a balance of available water for producing food from plants, animals, or other forms. The system supports a population in the 100's of millions, which makes it too urbanized to make it an agricultural world. It is a member of Sword Worlds Confederation in the Sword Worlds Subsector of Spinward Marches Sector and in the Sword Worlds. This world supports a Sword Worlds Military Base and the system supports a Sword Worlds Naval Base.

Astrography & Planetology

Dyrnwyn is a member of the Spinward Main.

Dyrnwyn is tidally locked to "Rhydderch", its primary, despite sitting on the edge of the system's habitable zone. The near side of the planet is mostly ocean with a temperate climate, while the far side is frozen with average temperatures at the cold pole nearing -51°C.

Dyrnwyn contains three main continents: Joekullvetur, Ny Groenland, and Eghvass. Other major land masses include the coveted Jarthlaug Islands in the ocean circle, which contain the settlement of Katlar. Both the capital city of Svartgardur as well as Ahgharad Starport are located on the Joekullvetur continent.

Binary Solar System

Dyrnwyn Binary Star System

Star Name	Hierarchy	Category		Mass (Sol)	Temp (K)	Luminosity (Sol)
Rhydderch K4 V	Primary	Main Sequence		0.73	4440 - 4600	0.33238
	Unit	Diameter	Min Distance	Hab Zone	Jump Shadow	M-Drive Limit
	AU	0.0033	0.0478	0.58 - 1.07	0.33	3.3
	Orbit #	*	*	2	1	5
Star Name	Hierarchy	Category		Mass (Sol)	Temp (K)	Luminosity (Sol)
Gwydion M8 V	Secondary	Main Sequence		0.085	2420 - 2570	0.00018
	Unit	Diameter	Min Distance	Hab Zone	Jump Shadow	M-Drive Limit
	AU	0.0005	0.0011	0.01 - 0.03	0.05	0.5
	Orbit #	*	*	*	*	1

History & Background (Dossier)

Dyrnwyn was formerly a member of the Sword Worlds Confederation. During the Fifth Frontier War, Dyrnwyn was invaded by Imperial troops on 233-1109 as part of Operation Azhanti Sunrise. Following the defeat of Sword Worlds forces, Dyrnwyn came under Imperial occupation and in 1110 was among the border systems that broke off from the Confederation to create the pro-Imperial client state called the Border Worlds Federation. In 1111 control of Dyrnwyn was returned to the Fortarn Conglomerate, the planet's Gungnir (Spinward Marches 1221)-based corporate owners, as part of a post-war goodwill package.

The Dyrnwyn ("White-Hilt") is said to be a powerful sword belonging to Rhydderch Hael, one of the Three Generous Men of Britain mentioned in the Welsh Triads.

References & Contributors (Sources)

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 Far Future Enterprises or by permission of the author. The page history lists all of the contributions.

• Marc Miller. The Spinward Marches (Game Designers Workshop, 1979), 16-17.
• Marc Miller. The Spinward Marches Campaign (Game Designers Workshop, 1985), 18-19.
• Marc Miller. Imperial Encyclopedia (Game Designers Workshop, 1987), 94-100. (UWP only)
• Rob Caswell. "Domain of Deneb: Sector Data." MegaTraveller Journal 3 (1992): 47-58. (UWP only)
• Dave Nilsen. The Regency Sourcebook (Game Designers Workshop, 1995), 44-45. (UWP only)
• Martin Dougherty, Neil Frier. Behind the Claw (Steve Jackson Games, 1998), 71.
• Paul Drye, Hans Rancke-Madsen, Robert Prior. Sword Worlds (Steve Jackson Games, 2004), 49-51.
• Mike West. The Spinward States (Avenger Enterprises, 2008), 109. (UWP only)
• Martin Dougherty. The Spinward Marches (Mongoose Publishing, 2008), .
• Gregory P. Lee. Cirque (Greylock Publishing, 2014), 147-150.
• Citation Missing - Behind the Claw (UWP only)
• Citation Missing - Sword Worlds