When playing the campaign you will get two types of missions.
Type 1
This is you campaign objective.
You can select it when in the briefing.
It is selected by clicking on the "request mission" button.
You have a time limit (date) to complete (usually a few months).
It will ask you to sink a tonnage of shipping etc.
The area where the ships will count are either coloured grey or a shipping line.
You can see this by clicking on the marker when in the map view.
You can re-arm or end patrol when back at base as many time as you like.
Re- arm gives you fuel and ammo and take no time to happen
End patrol will give you the option to re-arm and upgrade equipment when in the bunker. It takes about 14 days to end patrol and then get back out.
As you sink tonnage, a progress bar will fill. (click marker in map to view).
It will finish on the date or when progress bar is full.
If you finish it on time - you will get campaign stars.
With enough stars you can win each campaign.
Type 2
This is missions objective.
You get it automitically when you set sail.
You can see it as an orange marker on the map view.
You can see what you must do by looking at the captains log.
If it is patrol area - draw a 80km circle and stay within it for 72hrs.
Note: some patrol areas can be as big as 200km and some even bigger. You can't tell sostay within 80km to be sure. This areas sizes apply to all these mission types.
You may get a sink ship mission. As above stay inside 80km. (fishing boats count if you use OH II
)
When complete you may or may not get another automitically.
Eash one is worth 200 renown points.
Use these renown points at the end of a patrol to upgrade your boat.
Each mission will be within the area for you campaign objectives so you can do both at the same time.
You will get a new mission objective with each new patrol.
Remember - you do not have to do any of this.
You can just go out and sink ships to get renown and upgrade your boat.