# Trade Routes

**Entity Type:** SystemEntity

## Description

Automated ship loop moving goods between islands.

## Configuration

1. Select ship
2. Enable Trade Route
3. Assign goods per cargo slot
4. Assign islands for load/unload

## Rules

- Route loops indefinitely
- Used to supply production chains across islands

## Usage Patterns

Specialize islands (agricultural vs industrial) and route goods accordingly.

## Common Pitfalls

Under-shipping (not enough cargo throughput) leads to need flicker and income oscillation.