<!-- Starship Maintenance — markdown sibling of https://srd-framework.vercel.app/swn-golden-triangle/starship-maintenance/ -->

# Starship Maintenance

## The Basics

**Roll monthly** (or per voyage, whichever comes first). Roll d20 + ship quality, beat your current Wear or something breaks.

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## Wear

Wear accumulates from hazards and hard use. Track as a number.

| Hazard                                                    | Wear   |
| --------------------------------------------------------- | ------ |
| The Belt (dense regions)                                  | +1     |
| Inner System (close solar approach)                       | +1     |
| Deep Ashtari (radiation belts)                            | +1     |
| The Maelstrom (fuel scooping)                             | +2     |
| Hard burn (pursuit, escape)                               | +1     |
| Running silent/cold                                       | +1     |
| Combat                                                    | +2     |
| Overloaded cargo                                          | +1     |
| Rushed departure                                          | +1     |
| **Atmospheric landing/takeoff** (standard, TL4 grav)      | **+1** |
| **Atmospheric landing/takeoff** (dense/corrosive)         | **+2** |
| **Atmospheric landing/takeoff** (TL3 / no grav, standard) | **+2** |
| **Atmospheric landing/takeoff** (TL3 / no grav, dense)    | **+3** |
| **Emergency reentry** (grav failure mid-descent)          | **+3** |

*Atmospheric Wear reflects thermal stress from the orbital velocity transition, aerodynamic loads, and chemical exposure. TL4 grav plates allow slow atmospheric traversal, reducing heating and structural stress by ~1 step versus pure-rocket profiles. Vacuum and negligible-gravity landings (Celeva, Lazuna, stations) cost no Wear. Thin-atmosphere landings at low gravity (Serambi) cost no Wear with functioning grav. See Economy - Energy and Fuel for full atmospheric operations model.*

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## Clearing Wear

| Method            | Time    | Effect                            | Cost            |
| ----------------- | ------- | --------------------------------- | --------------- |
| **Field Repairs** | 1 week  | -1 Wear                           | 0.1% hull value |
| **Port Stop**     | 1 week  | -3 Wear (floor 5) OR fix 1 system | 0.5% hull value |
| **Careening**     | 5 weeks | Clear ALL Wear, fix ALL systems   | 5% ship value   |

**The Floor:** Port stops can't reduce Wear below 5. Only careening clears to 0.

**Integral Systems (†):** Spike Drive, Power Plant, and Hull can only be properly fixed by careening. Port stops can fix everything else.

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## The Maintenance Roll

Roll **d20 + ship quality**. Must roll **over** current Wear.

| Result | Outcome |
|--------|---------|
| Beat Wear | Safe. Wear remains. |
| Equal or under | Breakdown. Roll on table, then Wear clears to 0. |
| Natural 20 | Safe AND clear 1 Wear |
| Natural 1 | Always breakdown |

**Ship Quality:**

| Quality | Mod | Examples |
|---------|-----|----------|
| Pretech | +1 | Ancient, built to last |
| Great Power military | +1 | Cathay navy, Caliphate warships |
| Nusantaran quality | +1 | Lazuna yards, Javon shipwrights |
| Frontier built | -1 | Arcadia yards, belt fabricators |
| Salvage/reconstruction | -1 | Hulk recovery, cobbled together |
| Old (50+ years) | -1 | Outdated components |
| Ancient (100+ years) | -2 | Parts don't exist anymore |

*Modifiers stack.*

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## Breakdown Table (2d6)

Systems marked † are **integral** - only careening fixes them.

| Roll | System | Effect |
|------|--------|--------|
| 2 | † **Spike Drive** | Can't jump. Stuck in-system until careening. |
| 3 | † **Power Plant** | Half power. Choose thrust, weapons, OR full life support each scene. |
| 4 | **Fuel System** | Leaking fuel. Days until empty. |
| 5 | **Thrusters** | Sluggish maneuvering. Docking dangerous, combat worse. |
| 6 | **Sensors** | Half-blind. Threats appear late, navigation unreliable. |
| 7 | † **Hull Integrity** | Atmosphere leak. Find it before it finds you. |
| 8 | **Life Support** | CO2 building or thermal failure. Days to act. |
| 9 | **Computer/Nav** | Manual flight only. Calculations take hours. |
| 10 | **Comms** | Can't call for help or receive beacons. |
| 11 | **Cargo Systems** | Can't load/unload. Cargo may be damaged. |
| 12 | **Weapons** | One weapon system offline. |

*Integral systems (†) = 25% of breakdowns. Hull is most common because it's under constant stress.*

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## Fixing Breakdowns

**Jury-Rig:** Tech/Fix vs 10 (12 for integral). Gets it working, but fragile. Breaks again = out of options until shipyard.

**Proper Repair:**
- Port-fixable systems: Port stop, 1 week, 25% of system cost
- Integral systems (†): Careening only

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## Quick Reference

**Typical flow:**
1. Accumulate Wear from travel and hazards
2. Roll d20 + quality vs Wear at month end
3. Breakdown? Roll 2d6, jury-rig to keep flying
4. Port stop clears Wear (to floor of 5) or fixes one system
5. Integral breakdowns accumulate until you careen

**Expected pace:** ~3 breakdowns/year, ~1 integral → annual careening.

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## SWN 1e Reference

*Baseline rules for reference. House rules above replace the maintenance system.*

**Costs:**
- Payroll: 100 cr/day per crewman
- Fuel (station): 100 cr × drive rating (×2 frigate, ×4 cruiser, ×8 capital)
- Fuel (scooping): 4 days, free
- Stores: 20 cr/day/person

**Repair (spaceyard):**
- Battle damage: 1,000 cr labor + materials per HP, 10 HP/day max
- Disabled fitting: 25% of fitting cost, 1d4 days
- Spike drive: 10% of hull cost

**Jury-Rig (space):**
- Tech/Astronautics vs 10 (12 for spike drive)
- Requires spare parts
- If disabled again, needs spaceyard