Theoretically there should be plenty of traffic hugging the african east coast from the red sea down through the Mossambic channel en route to Cape Town and from there, northwards to Freetown and finally the UK. The Indian coast should also be plenty of ships going along the coast and to and from the red sea. Finally, the northern australian coast might have some mild traffic, going to the more crowded east coast. You should choose those spots where ships must go through, and will find lots of targets. Those spots include the Mossambic channel, the Torres Strait, the Ormuz strait (Exit/entry to red sea) and similar.
Oh, and BTW did you transfer voluntarily or has the game automatically transferred you there? I'd like to start a campaign when I have time, but departing from France and not already at Penang.
Finally, a hint: While you stay in the Indian Ocean, enable the reduced GWX Indian Ocean files only campaign, which is in your mods folder. Will make loading times much faster, and allow better time compression and general running of the game.
