Thank you for your advices, kaleun. I usually play from the beginning of the war. Porpoise class. She's not a bad boat but lack of modern equipments. I moved forward to Japan at flank speed and then proceed to patrol area. There, I dived in the morning and surface at night. This is what I learned from a memoir of a sub skipper. but the thing is when submerge, it's hard to chase the target, even at flank speed so I must surface and the consequence is being bombed.
On another patrol in East China Sea,at dawn, I made contact with a small convoy of 6 freighters and 3 escorts. I was ahead of them and dived, their course was SW and I was in perfect firing position. So I sank a modern composite freighter and being pinned and depth charged till dark. Well, I dived to 70 m and lay low there, rigged for silent running too. Then at night, I managed to surface and tracked the route. Stalked them till morning and scored 2 sunks. I fired 3 fishes in the bow tubes and 2 in the stern. The stern ones were lucky,though
. During this second attack, I was behind them but know their course so I plotted my new course parallel to the convoy at flank speed and at about 6000 odd km. The result of this juicy patrol, I scored about 23000 tonnages, sank two small ships before by deck gun. It's quite small but to me, it's nice.
I wanna ask you about how to use the time compession properly? It's quite borinbg between the trip from Pearl to Japan, as you know so I put TC to max and when chasing convoy I don't know if you put in normal time or TC?
Thank you.