For fatigue/morale:

Green Circle: Slightly Fatigued (40-49) and the words flashing
- accuracy and evasion slightly reduced, but in map 4 onwards, your fleet will take quite some damage from enemy fleet if unlucky
- If you see the flashing and if you want to grind with efficiently while taking least damage from enemy, you should let your fleet rest about 5-15 mins till the "給" word stop flashing and fade off.
- For TT who want to power-level their Flagship while not really worry about buckets and resource spending, they may sortie their fleet under this status.

Red Circle: Moderately Fatigued (39 and below)
- At this state, unless you very desparate or you are grinding a very low level map with huge level gap, Mostly not recommended for further sortie.
- Accuracy and evasion of your fleet ships can consider halved. Will suffer a lot of damage from higher level map enemy fleets.

Yellow Circle: Sparkling (any morale value above 50)
- Normally this effect will happen on any ship who got MVP more than 2 times.
- It is possible to make your whole fleet sparkling, by using 演習 with other player and win rank S/A more than 2 times(practice war, only cost fuel and ammo, no damage, rarely fatigue even lost)