Cargo Depot
From Captain of Industry Wiki
Cargo Depot is a research unlocking the following buildings: Cargo Depot (2), Unit Module (S), Unit Module (S) and Fluid Module (S).
One could consider Trading Dock research to precede it and Cargo Depot II research to follow it.
Requirements
- Cargo Ship Technology - Discover a Damaged Cargo Ship on the The World Map.
- Research Lab II or better.