Can't understand why you can't find convoys in RSRD. Each time I go out I most always can them, maybe just played so long, know where to look, but if you follow history, it's all there for the most part. There are almost always large invasion forces through 43. I posted several convoys in the convoy SS thread.
My favorite is always late feb to early march in Java. 3 large invasion forces, battle of Sundra...just have to do a quick refit before Surabaya falls to stock back up and go attack again. At one time I had 3 large convoys within sonar in different directions...just not enough torps.
I never shoot singles in RSRD unless large tankers....just let em pass.
Had a blast..followed two large US TF, over 70 ships during the time of the The Great Marianas Turkey Shoot. I didn't think anything would happen, but sure enough here came JP planes in mass, most I've ever seen in the game and they attacked all day long....Was quite a show.
I think this is the Aikoku. Seems I found these at Lae, can't remember the time, but about 4 there with the invasion force. Can't remember if they have sonar, but seems they had charge racks....though they never got to use them. They do have several deckguns.
Also in the group was this poor nerchant without a skin...Long ago, so probably an old version of RSRD, but only time I ever saw it was there, almost thought someone put in a hospital ship....lol