""Port" is much better name than "Enormous Boat Parking Lot". So efficient!"
"Fighting Capitalist by moonlight, growing Potatoes by daylight!" - Sailor Bonny
Harbours are the tier 7 generator in the Land industry. Without cost reduction researchers, one harbour costs 10 B Trains, 10 RR Land, and 2 Comrades. The base production of harbours is 10 Trains per 3 minute, 12 seconds cycle. Sailor Bonny speeds up and automates this industry, and is unlocked at Rank 36.