When the battle starts, if there is a DD or CL in your Vanguard: increases this ship's SPD by 3 and FP by 1.0% (10.0%) . When this ship takes DMG: fires a Lv.1 (Lv.10) special barrage (DMG is based on the skill's level; 10s cooldown between activations; if this barrage hasn't fired once in the past 20s: fires this barrage).
The Steadfast Mighty Oak
Once per battle, when a Royal Navy ship in your fleet takes DMG that would sink her: that DMG is negated, that ship recovers 1.0% (3.0%) of her max HP, and she evades all attacks for 3s. When this ship's max HP falls below 18.0%: decreases this ship's DMG taken by 8.0% (18.0%) and, once every 5s, recovers 1.0% (3.0%) of this ship's max HP; when this ship's max HP is above 18.0%: increases this ship's DMG dealt by 8.0% (18.0%) and tanks 20.0% (50.0%) of the DMG your Royal Navy Main Fleet ships would take while decreasing that DMG by 15.0% (30.0%) .
Introduce myself again? Okay... Umm, my name is Royal Oak, and I'm a Revenge-class battleship from the Royal Navy. I was able to accomplish something in the Battle of Jutland, but I ended up getting badly damaged after... I just hope I can escape my bad luck here at this port.
I-is this real? I'm not dreaming... Lord Commander, you'd really give me something this valuable? Of course, I've always hoped that I could have this honour someday, and I'm as happy as can be! Umm, anyway, I happily accept!