- New Remodels
- New Items
- 【司令部要員】"Headquarters Personnel"
- Increases the number of missions one can do at the same time by one
- Will be a mission reward for a certain mission
- 【司令部要員】"Headquarters Personnel"
- New BGM
- 『新編「海上護衛隊」抜錨!』'Newly formed "Surface Escort Fleet", sortie!'
- New Maps
- World 1-6 (Extra Operation)
- 「鎮守府近海航路」
- Submarine and carrier-based map
- Requires a fleet with high ASW and AA
- BB, FBB, CLT, CV, etc. cannot be used
- Lots of resources can be obtained here
- Can be unlocked upon clearing 1-5, every month
- Enemies, compositions and resource drops are subject to change
- Submarine and carrier-based map
- 7 complete run to empty the gauge, no boss node
- Gives a Present Box instead of a medal
- 「鎮守府近海航路」
- World 1-6 (Extra Operation)
- New Quests
- Expedition Quests:
- 『観艦式予行を実施せよ!』 "Implement the Naval Review rehearsal!"
- Do expedition 7 twice
- 『観艦式を敢行せよ!』 "Do the Naval Review!"
- Do expedition 8 once
- 『観艦式予行を実施せよ!』 "Implement the Naval Review rehearsal!"
- PVP Quests:
- 『演習を強化、艦隊の練度向上に努めよ!』"Strengthen the practice battles, increase the fleet's experience!"
- Win PVP 4 times
- 『演習を強化、艦隊の練度向上に努めよ!』"Strengthen the practice battles, increase the fleet's experience!"
- Expedition Quests:
- New voices and other updates