Campaign 'Battle Of The Mediterranean' objectives

[UltimateGTR]

Hello.
I've just finished the campaign 'Mare Nostrum' and now I start the campaign 'Battle Of The Mediterranean'. However I get stick and don't get how to complete the objectives. There are 3 objectives at the beginning: 'Rommel's Supplies', 'Fortress Gibraltar' and 'Siege Of Malta'.

For 'Siege Of Malta', it required sink 100000 tons of supplies for Malta, so I went to the port of Malta and sink the merchants, but not count to mission at all.

For 'Fortress Gibraltar', it required sink 1 AC and sink 5 Force H destroyers, then I went to the port of Gibraltar and sink some warships, no progress to mission too.

For 'Rommel's Supplies', it said 500000 tons of supplies must reach Lybian bases, I guess is to protect the friendly merchants to reach Lybyen ports, am I right?


Have someone completed any of the above objectives? Would you like to explain how to complete?

Thanks so much!