The Cargo Line Vol. 5 – Nuclear add-on, released on November 18, 2025, is a highly specialized expansion for Train Sim World that delves into the critical and high-security operation of transporting spent nuclear fuel across the United Kingdom’s rail network.
🔑 Key Details of the Nuclear Operation
| Feature | Description |
| Official Title | Cargo Line Vol. 5 – Nuclear |
| Focus | Hauling highly secure and sensitive nuclear flask wagons. |
| Locomotive | BR Class 20/3 (Modernised Diesel) in Unbranded Oxford Blue livery. |
| Rolling Stock | FNA-D Nuclear Flask Carrier Wagon (Dedicated transport for spent nuclear fuel). |
| Operational Method | Services typically use multiple locomotives (“sandwiching” the wagons) for protection and operational redundancy. |
🛤️ Integrated Routes and Services
The new scenarios and specialized timetable services are layered onto three existing UK routes, which must be purchased separately:
| Route Required | Operational Context |
| West Coast Main Line: London Euston – Milton Keynes | Managing security-sensitive movements through the busy, electrified southern section of the WCML. |
| West Coast Main Line: Preston – Carlisle | Long-distance, high-priority hauls through the scenic and remote northern sections of the WCML. |
| Riviera Line: Exeter – Plymouth and Paignton | Seasonal and specialized services, potentially connecting coastal nuclear sites or naval bases. |
🚆 The Class 20/3: The “Chopper”
The included locomotive is essential for the realism of nuclear flask movements:
- Model: The BR Class 20/3 is a modernized version of the classic British diesel locomotive.
- Nickname: It is affectionately known as the “Chopper” due to the distinctive, rhythmic sound of its English Electric engine under load.
- Role: The use of multiple Class 20/3 units to “sandwich” the flasks is a common real-world procedure by operators like Direct Rail Services (DRS), ensuring there is a locomotive at both the front and rear of the convoy for safety, redundancy, and braking power.
🛒 Availability
The Cargo Line Vol. 5 – Nuclear add-on is available for purchase on all major digital platforms that support the Train Sim World ecosystem, including:
- Steam (PC)
- Epic Games Store (PC)
- PlayStation Store
- Xbox Store
