Simple Question: Define "Ship Transporting WAR meterial"

[Matador.es]

Hai there,

I am in Oktober 22, 1940, Happy Times. Have 3 missions when i recall correct.

I have sunk the 200k west of the UK. Though i have not yet completed the: Sink 10 ships transporting war meterial to GB. Even though most of the convoys i have hit were heading eastwards. These 2 mission are in the same area, the other is at the East Coast of Brintain, were i am supposed to sink 100K.

Question 1: What kind of ships do i need to attack to sink 10 ships transporting war meterial? Regular cargo and tanker will not do the job right?

Question 2: Do only ships in "the circle" count? I mean, click on mission objective and it will provide an area.

Question 3: Can i start hunting @ the East Coast, and gain "points" for 2 mission objectoves? (war meterial & east coast 100K)


Aditional;
What is the differance betwen refit and end of patrol? You will not get any experiance point when refitting. But does it make a diffarance in time in port? (time not at sea).

Aditional 2: whats the best way to get to know the Depth Under Keel?

Thanks in advance for sharing your experiance!

Aye