Goods · staple
Merchant Marine
staple Prestige factor 8 Trade quantity 4 Convoy cost ×0.05
Produced by
| Building | Production method | Output / level |
|---|---|---|
 Port | Modern Port | 30 |
| Industrial Port | 20 | |
| Cargo Port | 9 |
Used by
| Building | Production method | Input / level |
|---|---|---|
 Trade Center | Mass-Scale Trading | 6 |
| Bulk Trading | 5 | |
| Regular Trading | 4 | |
| Small-Scale Trading | 3 |
Pop demand
Pops never buy Merchant Marine directly — demand comes only from buildings.
Quantities are per building level at full employment · weights steer pop spending between substitute goods