Provides trains for transportation and allows you to store and trade oil.
Oil Harbour (American spelling: oil harbor) is an Infrastructure and Harbour Building which is a crucial part of the electricity and oil system - it stores 
Oil, provides trains for the railway network and allows oil tankers to load/unload oil. It can be built in the Old World (and Cape Trelawney) and the New World. With 
Bright Harvest DLC it can also be built in Enbesa. It requires free coastline, does not need any road connection. Only one oil harbour can be built on an island.
Oil harbour functionality[]
For more information and details about the oil system infrastructure and mechanics, see: Electricity.
The menu of the oil harbour provides an overview on the status of each train, allows to jump to their location and monitors the amount of oil being stored and how its stock has been changing recently. The buttons at the top right lead to the menus where trains' skin can be changed or where the blocked railway segments can be checked.
Oil harbours are absolutely necessary to produce or use Oil. They allow to store oil on the island and provide trains for transporting oil across the island. Other buildings which produce or use oil, such as Oil Refinery, 
Oil Power Plant, 
Fuel Station or 
Power Station, need to be connected to the oil harbour via railway. Then trains can travel from the harbour to those buildings, transporting oil from and to the harbour.
The menu of the oil harbour provides an overview on the status of each train, clicking on each train slot allows to jump to their location, and the menu monitors the amount of oil being stored and how its stock has been changing recently. Clicking the timer icon in the top right opens the menu which lists blocked segments of railway, allows to jump to their location and indicates for how long each segment has been blocked. Additionally, the oil harbour menu includes an option to change the skin of the trains travelling across the island's railways.
Oil harbours also allow oil tankers to load and unload oil to transport it between different islands, either manually or via oil routes. Oil tankers cannot use trading posts or piers. The oil harbours, however, have high loading speed of 100 tons of oil per second and therefore should easily keep up with exchanging oil between the island's storage and the oil tankers.
Upgrades[]
At first only the small version of the oil harbour can be constructed, it provides 3 trains and 500 tons of oil storage capacity. It is possible to upgrade the small oil harbour in order to gain more trains and bigger oil storage capacity. There are a few other means of increasing the oil storage capacity: placing oil stores in any harbour area of the island, or utilising Fuel Reserves Act palace policy.
The oil harbour can be upgraded up to two times (or up to three times with the Bright Harvest DLC). Each upgrade requires construction materials and increases maintenance cost. Upgrades provide additional trains and oil storage capacity, up to a maximum of 5 trains and 1000 oil storage (7 trains and 1500 oil storage with Bright Harvest DLC).
| Level | Properties | Construction/upgrade cost | ||
|---|---|---|---|---|
| Old World | New World | Enbesa | ||
| Small | 3 trains 500 oil storage -100 
|
10000 20  25  20  15  15 
|
10000 20 25
|
10000 20  25 
|
| Medium | +1 train +250 oil storage -150
|
15000 60 40 30 15 15
|
15000 60 40 30 15 15
|
15000 60 40
|
| Large | +1 train +250 oil storage -200
|
15000 60 40 30 15 15
|
15000 60 40 30 15 15
|
15000 60 40
|
| Grand ( )
|
+2 trains +500 oil storage -250
|
25000 80 60 50 35 35
|
25000 80 60 50 35 35
|
25000 80 60
|
Items[]
Some items when equipped in harbourmaster's offices can have an impact on oil harbours.
Items for all harbour buildings[]
 Carpenter's ToolsCommon | ||
|---|---|---|
| Good for repairing buildings. | ||
 Equipped in Harbourmaster's OfficeAffects Harbour Buildings when activated |
When activated Self-Repair +200% Duration:00:45Active Healing Your buildings constantly repair themselves, even during combat. Destroyed after use |
Expedition Bonus Crafting: +6 |
 Builder's ToolsUncommon | ||
|---|---|---|
| Excellent for repairing buildings. | ||
| Equipped in Harbourmaster's Office Affects Harbour Buildings when activated |
When activated Self-Repair +300% Duration:01:00Active Healing Your ship constantly repairs itself, even during combat. Destroyed after use |
Expedition Bonus Crafting: +8 |
 Dockyard ToolboxUncommon | ||
|---|---|---|
| Helps your harbour recover fast! | ||
| Equipped in Harbourmaster's Office Affects Harbour Buildings |
Effects Maintenance Cost: +15% Self-Repair: +50% |
Expedition Bonus Crafting: +20 |
 Dockyard ToolchestRare | ||
|---|---|---|
| Helps your harbour recover even faster! | ||
| Equipped in Harbourmaster's Office Affects Harbour Buildings |
Effects Self-Repair: +75% |
Expedition Bonus Crafting: +30 |
| Dockyard Tool System Epic | ||
|---|---|---|
| Wow, there's actually a system for keeping the dockyard running smooth now. | ||
| Equipped in Harbourmaster's Office Affects Harbour Buildings |
Effects Self-Repair: +100% Active Healing Your buildings constantly repair themselves, even during combat. |
Expedition Bonus Crafting: +40 |
| Deke's Indispensible Dockyard Crate Legendary | ||
|---|---|---|
| A chest any salty sailor would be proud of, filled with things to keep your dockyard running whatever the weather. | ||
| Equipped in Harbourmaster's Office Affects Harbour Buildings |
Effects Maintenance Cost: -25% Self-Repair: +150% Active Healing Your buildings constantly repair themselves, even during combat. |
Expedition Bonus Crafting: +50 |
 Hogarth the Harbourmaster, Veteran Of TrelawneyLegendary DLC Required
Sunken Treasures | ||
|---|---|---|
| Joined after you helped the Queen at Trelawney. Was in charge of logistics during the war, so expect military efficiency at the docks! | ||
| Equipped in Harbourmaster's Office Affects Harbour Buildings |
Effects Harbour Activity: +30% Every time passive trade happens at the trading post, there is a chance of gaining 5t of  Coffee,  Gold,  Cotton Fabric,  Rum,  Chocolate.Loading Speed: +100% |
Expedition Bonus Diplomacy: +50 |
| Available from The Queen quest: Tribute to a Legend Unique: you can have only one such item in the game | ||
Screenshots[]
