Direct answer
The Airship is a core progression system in Solarpunk, and the current verified beginner guidance confirms one especially important point:
Airships are personal in co-op.
What is not yet ready to publish as definitive is the exact upgrade interaction point and the exact in-game effect of each level. A current-release guide now gives a much stronger lead for the trade milestones tied to Levels 2 to 4, but that still is not enough to treat the entire upgrade flow as fully settled.
What is already verified
The current verified source set supports these broad Airship facts:
- Airship exploration is a core official feature
- progression eventually moves beyond the starting island search loop
- Airships are personal in co-op
Those facts are enough to justify a dedicated upgrade page, but not enough to safely invent exact upgrade steps.
Where the upgrade interaction happens
This is one of the exact details that still requires direct verification.
Do not currently publish a definitive claim about whether upgrades happen through:
- a Dock interaction
- a station
- a menu
- an NPC
- a specific workbench
Until that interaction is confirmed in the release version, the page should remain explicit that this detail is still under review.
Requirements by level
The page now has a real current-release lead for the trade milestones tied to Airship upgrades. What it still does not have is direct confirmation of the exact in-game stat or range change triggered by each level.
| Airship Level | Requirements | Unlocks | Verified version |
|---|---|---|---|
| Level 1 | Needs verification | Needs verification | Pending direct release-version evidence |
| Level 2 | Tradebot trade milestone: 32x Copper | Current source confirms the trade label, not the exact in-game effect | Current-release secondary guide, verified 2026-06-12 |
| Level 3 | Tradebot trade milestone: 6x Egg | Current source confirms the trade label, not the exact in-game effect | Current-release secondary guide, verified 2026-06-12 |
| Level 4 | Tradebot trade milestone: 10x Truffle | Current source confirms the trade label, not the exact in-game effect | Current-release secondary guide, verified 2026-06-12 |
What upgrading the Airship is likely to affect
The page can safely explain the role of Airship upgrades without pretending the exact numbers are known.
Upgrade progression is clearly connected to deeper resource and farming loops because the currently listed trade milestones move from:
- Copper for Level 2
- Eggs for Level 3
- Truffles for Level 4
That pattern supports a safe progression reading without pretending the exact range increase or travel stat per level is already confirmed.
Upgrade progression is likely connected to:
- wider exploration range
- access to new islands or resource routes
- stronger connection between travel and advanced farming/resource loops
Those are progression-level observations, not exact verified level bonuses.
Why an upgrade may be unavailable
Until the exact system is verified, the page should keep this troubleshooting section general and honest.
Possible reasons include:
- you have not unlocked the relevant progression step yet
- you have not built the required supporting structure or station
- you do not have the required materials
- you are relying on outdated or unverified guide information
The page should not convert those possibilities into a fake exact checklist.
Co-op note that should stay on the page
Because the beginner guide directly confirms it, the co-op clarification belongs here:
Each player's Airship is personal in co-op.
That is a material gameplay expectation and should remain visible even before the exact upgrade table is filled in.
What still requires verification
Before this page can move from review/noindex to production-ready, it needs:
- exact upgrade interaction point
- independent confirmation of the level requirements now listed from the current-release guide
- exact unlock effects by level
- exact version evidence attached to the table