An unreachable building in Corsair Cove usually fails at one of four boundaries: it is outside a Pirate Camp’s reach, the physical connection has a gap, the required workers are unavailable, or the supply route is not delivering. Test those boundaries in that order. Rebuilding the production chain before finding the boundary wastes materials and often recreates the same fault.
Test camp reach and route continuity
Select the building and identify its assigned Pirate Camp. Every building must be within the reach of a camp. If another camp overlaps the location, use the building menu to assign it deliberately rather than assuming the nearest camp owns it.
Trace the physical path all the way back to the haven. Roads, rope bridges, cliff paths, and ladders can join elevations, but a missing tile, bad landing, or removed segment breaks continuity. Construction cannot start until the route is complete, and an operating building stops if that route is later severed.
For a new cliff district, finish the connection before placing several workplaces. That reveals whether the slope can be bridged cleanly and prevents a queue of unusable blueprints from absorbing attention.
Distinguish movement from resource links
A walkable connection lets pirates reach the building. It does not automatically create every supply route. Buildings that consume goods need one-way Fetcher assignments from producers or warehouses.
Open the consumer, select the required input, and choose the building that will supply it. The route receives a Fetcher. If two consumers need the same source, account for two routes and their labor. A visible path without an input link leaves the consumer empty; a visible input link without stock leaves the Fetcher waiting.
Click a link icon to emphasize its line. Under the default colors, green indicates high efficiency, yellow medium, and red low. Use the highlighted line to locate needless climbs, long detours, or a source on the wrong side of the island.
Read the stalled building’s storage
An empty input meter means the recipe lacks ingredients. Follow the Fetcher back to the source and inspect its output. If the source is also empty, move upstream again. A red hourglass can signal that the Fetcher is waiting while the source itself is not producing.
A full output meter is the opposite problem. The building has produced goods but no downstream demand or warehouse pickup is clearing them. Assigning another input Fetcher will not help; create a useful destination, add storage transport, or pause the producer.
Drain supplies context. If pickups and consumption exceed production, a source can appear functional while its consumers starve intermittently. Improve the route or add capacity only after confirming which side of the rate balance is losing.
Recover workers without breaking the haven
Buildings require their full worker count and cannot run partially staffed. New construction and optional workplaces can consume the Drifters that a critical chain needs. Pause the least important job, confirm Drifters become available, and reopen the essential building.
Use All Hands on Deck only when the labor pool can absorb doubled Fetcher and Greenhand demand for that building. In a constrained district, the boost can silence a neighboring chain and make the original diagnosis harder.
If a building is assigned to the wrong camp, reassign it within range and then inspect the new camp’s Galley, Tavern, housing, and other upkeep services. A successful path correction can still create a satisfaction problem.
Repair vertical routes safely
When replacing a bridge, ladder, or cliff segment, pause dependent workplaces first. Build the replacement connection and verify continuity before removing the old segment. This reduces the period during which workers and Fetchers cannot reach their tasks.
Keep landings clear. A compact vertical connector is valuable only if both ends join the route network. Later ziplines and elevators can shorten travel, but they should carry a known high-traffic path rather than compensate for an unplanned district.
Why will the blueprint not start?
Verify camp reach, then continuous access, construction resources, and available Builders. Those are separate prerequisites.
Why does the route line stay red?
Red represents low efficiency under the default colors. Shorten distance or elevation, move the source closer, or use a warehouse to reorganize pickups; adding production alone does not shorten a route.
Why is the building connected but empty?
The movement path is valid, but the input link may be absent, the source may have no output, or no worker may be free. Read storage and staffing before changing the road.
Can I turn a building off temporarily?
Yes. The official Buildings reference states that buildings can be switched off to free workers or control resource flow. This is safer than demolition during diagnosis.
Sources
- Corsair Cove Official Wiki: Buildings, especially connection, Fetcher, drain, and route-efficiency descriptions; checked 2026-08-02.
- Corsair Cove Official Wiki: Pirates, for Drifter assignment and camp upkeep; checked 2026-08-02.