Note: X and Y are coordinates (light years on XY plane) relative to Terra at (0, 0)
Port Arthur nearby systems
|X:Y Coordinates||131.569 : 255.343[e]|
|Recharge time||189 hours|
- 2319 - Independent world 
- 2571 - Draconis Combine 
- 2596 - Draconis Combine 
- 2750 - Draconis Combine 
- 2764 - Draconis Combine 
- 2765 - Draconis Combine 
- 2822 - Draconis Combine 
- 2864 - Draconis Combine 
- 3025 - Draconis Combine 
- 3030 - Draconis Combine 
- 3040 - Draconis Combine 
- 3050 - Draconis Combine 
- 3052 - Clan Smoke Jaguar 
- 3057 - Clan Smoke Jaguar 
- 3063 - Draconis Combine 
- 3067 - Draconis Combine 
- 3075 - Draconis Combine 
- 3079 - Draconis Combine 
- 3081 - Draconis Combine 
- 3085 - Draconis Combine 
- 3130 - Draconis Combine 
- 3135 - Draconis Combine 
- 3145 - Draconis Combine 
- 3151 - Draconis Combine 
Port Arthur III
|Port Arthur III|
|Atmospheric pressure||Standard (Breathable)|
|Equatorial temperature||20°C (Temperate)|
|Highest native life||Reptiles|
|Ruler||Tozama Daimyo Rutherford Ellis|
The Succession Wars
Port Arthur saw little in the way of fighting during the Succession Wars, but two raids by the Lyran Commonwealth destroyed critical infrastructure and left the planet dependent upon its neighbors for clean water.
Clan Invasion Era
In March of 3052, Clan Smoke Jaguar attacked Port Arthur during the Fifth Wave of Operation REVIVAL. The strategic value of the resource-rich planet meant saKhan Sarah Weaver personally led the attack, involving the Shroud Keshik and Seventh Jaguar Dragoons. They immediately engaged the First Proserpina Hussars at Zuave Vale, forcing them to fall back to secondary positions at Disher. Here the Smoke Jaguar attack bogged down, forcing saKhan Weaver to order a "headhunter" Star to locate and destroy the First Hussars' command company. While they succeeded in wiping out half the unit they failed to kill Tai-sa Jeong Moon Lee who narrowly escaped. Regardless this attack caused the defenders to retreat again, with the Jaguars again pursuing them. However at Point aux Trembles the Hussars managed to draw the Smoke Jaguars into range of concealed remote-firing weapons protected in hardened positions. The Jaguars had to spend nearly a week rooting out these hidden defenses while the Hussars launched sporadic raids on Clan supply depots. The use of such "dishonorable" tactics only served to infuriate the Jaguars even more; they mercilessly hunted down the rest of the regiment until the survivors were eventually were forced to abandon the world.
Port Arthur suffered a brutal occupation after it was claimed by the Smoke Jaguars. In one act of vandalism many of the capital city Affendale's beautiful parks were damaged due to being repurposed as DropShip landing zones.
Port Arthur was invaded in the first wave of Operation BULLDOG by the First Davion Guards, the Seventeenth Benjamin Regulars, the Second Legion of Vega, and the Fifth Sword of Light. The defending 168th Garrison Cluster of Clan Smoke Jaguar fought fiercely against the invading taskforce, who had to call in reinforcements; the Inner Sphere forces eventually captured the planet.
Following the planet's liberation the inhabitants worked tirelessly to rebuild and remove the signs of its time as a Clan world. A Veteran's Memorial, dedicated to Combine warriors who died resisting the Smoke Jaguars, was unveiled by Hohiro Kurita when he visited Port Arthur in 3066. In a notable change in architectural patterns, the planet's inhabitants also ceased new construction outwards in the cities and instead expanded underground. This and new antipollution laws were intended to preserve Port Arthur as the prefecture's "Zen garden".
A breadbasket world and notable for its natural beauty, Port Arthur also suffers from bacteria-heavy water and until the renaissance sparked by the Helm Memory Core was unable to purify local water sources.
|Closest 28 systems (28 within 60 light-years)|
Distance in light years, closest systems first:
- Handbook: House Kurita, p. 82, "Port Arthur"
- Shattered Fortress, p. 103, "Inner Sphere - 3151" (Map)
- Handbook: House Kurita, p. 18, "Draconis Combine Founding" -  Map
- Handbook: House Kurita, p. 31, "Draconis Combine after Age of War -  Map"
- Historical: Reunification War, p. 159, "Inner Sphere -  Map"
- Era Report: 2750, p. 37, "Inner Sphere -  Map"
- Field Manual: SLDF, "Inner Sphere -  Map"
- Historical: Liberation of Terra Volume 1, p. 11, "Inner Sphere -  Map"
- Handbook: House Kurita, p. 43, "Draconis Combine after First Succession War -  Map"
- Historical: Liberation of Terra Volume 2, p. 122, "Inner Sphere -  Map"
- Handbook: House Kurita, p. 53, "Draconis Combine after Second Succession War -  Map"
- House Kurita (The Draconis Combine), "Draconis Combine Map - "
- Handbook: House Kurita, p. 64, "Draconis Combine after Third Succession War -  Map"
- Handbook: House Kurita, p. 66, "Draconis Combine after Fourth Succession War -  Map"
- Historical: War of 3039, p. 133, "Inner Sphere - 3040 Map"
- Handbook: House Kurita, p. 68, "Draconis Combine after War of 3039 -  Map"
- Era Report: 3052, p. 11, "Inner Sphere  Map"
- Era Report: 3052, p. 23, "Inner Sphere -  Map"
- Era Report: 3062, p. 11, "Inner Sphere -  Map"
- Era Report: 3062, p. 29, "Inner Sphere -  Map"
- Handbook: House Kurita, p. 74, "Draconis Combine after FedCom Civil War -  Map"
- Jihad: Final Reckoning, p. 42, "Inner Sphere -  Map"
- Jihad Secrets: The Blake Documents, p. 65, "Inner Sphere -  Map"
- Field Report: DCMS, p. 23, "Draconis Combine Deployment - [August 3079] Map"
- Jihad: Final Reckoning, p. 63, "Inner Sphere-  Map"
- Field Manual: 3085, p. 127, "Inner Sphere -  Map"
- Era Digest: Dark Age, p. 12, "Map of the Inner Sphere - 3130"
- Era Report: 3145, p. 11, "Inner Sphere -  Map"
- Era Report: 3145, p. 39, "Inner Sphere -  Map"
- Field Manual: 3145, p. VI, "Inner Sphere -  Map"
- Shattered Fortress, p. 102-103, "Inner Sphere - 3151" (Map)
- Invading Clans (sourcebook), p.69
- The Dragon Roars, p.16
- Objective Raids, p. 65, "Unit Note"
- Field Manual: ComStar, p. 128, "Nova Cats Deployment Table"
- Field Manual: Updates, p. 100, "Clan Nova Cat Deployment Table"
- Era Digest: Dark Age
- Era Report: 2750
- Era Report: 3052
- Era Report: 3062
- Era Report: 3145
- Field Manual: 3085
- Field Manual: 3145
- Field Manual: SLDF
- Field Manual: ComStar
- Field Manual: Updates
- Field Report: DCMS
- Handbook: House Kurita
- Historical: Liberation of Terra Volume 1
- Historical: Reunification War
- Historical: War of 3039
- House Kurita (The Draconis Combine)
- Jihad: Final Reckoning
- Jihad Secrets: The Blake Documents
- MechCommander Video Game
- Objective Raids
- Shattered Fortress
- The Dragon Roars