Players who join the 12.4 Public Test Server will also receive the following rewards on the Live Server: 250 Doubloons, 2x More Coal containers, and 1x Tactical Special container. You can find more details about the chains in the Public Test client. You can complete all the missions three times and also obtain the rewards three times during each day of the Public Test. The chain is available for completion three times per day between the following times: 11:00–15:00 UTC 17:00–21:00 UTC and 22:00–02:00 UTC.
You can complete the combat mission chain in Random and Ranked Battles, as well as in Convoy, playing Tier VI–X ships and superships. Reward on the Live Server: 5,000 Free XP 700 Coal 800,000 Credits and 10,000 Elite Commander XP.
You can find more details about the chain in the Public Test client. Second ChainGain victories, earn Base XP, deal damage, and obtain "Destroyed" ribbons.