Need help on completing missions

[StgHardass]

I get the mission objective to patrol a given location (same thing like in SH3).
When I get too the objective I stay there for 24h and nothing happens. How do you complete a mission like this is there a minimum tonnage you must sinks or something ?

[maerean_m]

you have to stay there for 48 hours

[John Channing]

and within 50 miles of of the icon (just to be safe).

JCC