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.

Dyrnwyn (world)/Sword Worlds (Spinward Marches 1522) New Era B958818-B 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 (800 million) Government 1 Company/Corporation Law 8 High Law (controlled blades) Tech Level B Average Stellar (large starships)
See also	UWP
Cultural Details
Government	Company or Corporation
Law Level	High
Cultural Extension	4B18
Army Size (BEs)	1200
Economic Details
Technology Level	11
Economic Extension	B7C+1 Resources B Abundant Labor 7 Moderate (80 million) Infrastructure C Very extensive Efficiency +1 Average
Importance Extension	2
Resource Units	924
GWP (BCr)	2,196
World Trade Number	5
Trade Volume (MCr/year)	39,542
Starport Details
Classification	Class-B
Port Size	6
Building Capacity (Tons)	480,000
Port employees	9,400
Port passengers (annual)	84,400

Era: New Era

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. This world is designated an Amber Zone with an environment, laws, customs, life forms, or other conditions make it dangerous to visitors. It is a member of Regency of Deneb in the Sword Worlds Subsector of Spinward Marches Sector. This world has a nearby Regency Naval Base, capable of handling warships.

Description (Astrography & Planetology)

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 degrees C.

Binary Solar System

Dyrnwyn Binary Star System

"Rhydderch"
	Type	Category		Mass (Sol)	Temperature (K)	Luminosity
	K4 V	Main Sequence		0.73	4440 - 4600	0.33238
	Unit	Diameter	Safe Distance	Habitable Zone	Jump Shadow	M-Drive Limit
	AU	0.0066	0.0478	0.58 - 1.07	0.66	6.6
	Orbit #	*	*	2	2	6
	Remarks
Dyrnwyn
	Type	Category		Mass (Sol)	Temperature (K)	Luminosity
	M8 V	Main Sequence		0.085	2420 - 2570	0.00018
	Unit	Diameter	Safe Distance	Habitable Zone	Jump Shadow	M-Drive Limit
	AU	0.0011	0.0011	0.01 - 0.03	0.11	1.1
	Orbit #	*	*	*	0	3
	Remarks

Other Data

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.

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.

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 Mongoose Publishing or by permission of the author. The page history lists all of the contributions.

• Marc Miller. The Spinward Marches Campaign (Game Designers Workshop, 1985), TBD.
• Dave Nilsen. The Regency Sourcebook (Game Designers Workshop, 1995), 45.
• Martin Dougherty. Behind the Claw (Mongoose Publishing, 2019), 71.Martin Dougherty, Neil Frier. Behind the Claw (Steve Jackson Games, 1998), 71.
• GURPS Traveller: Sword Worlds
• Gregory P. Lee. Cirque (Greylock Publishing, 2014), 147-150.