Assume she is completed as was but earlier, in time for the battle where another ship is not available due to
refit, accident, whatever crew shortages.
Assuming she would be used as a battlecruiser as putting her with the battleships just means eight 15” with 30 degrees elevation ILO the eight on an R class or a QE. That meant 30,180yds maximum range and 120 shells per gun. Controlled by the latest (and last) model of Dreyer FCT.
Armament - Indomitable hit Derfflinger three times and Seydlitz once. Hood should have about 25% more guns able to bear and at c9,000yds FC is unlikely to make much difference.
Four 15” hits on Derfflinger and one or two on Seydlitz? Derfflinger does not score the fatal hit(s) on Invincible if it was her that did?
Armament - Invincible hit Lutzow at least twice; Hood two or three hits with 15”?
Protection - Invincible was penetrated through a turret face. Hood’s were 15”, Invincible’s 10”.
If Hood survives this then more hits by both sides?
Indefatigable - a bit odd if Hood were in that position but still.
Armament - The Germans opened fire at c18,000yds, would Hood fire at longer range and would she get time to correct initial errors? Indefatigable was firing at Von der Tann, could she have crippled that ship before coming into 28cm range?
Protection - Indefatigable was penetrated by 28cm from VdT. If Hood survives this then more hits by both sides?
Armament - The Germans opened fire at c18,000yds, would Hood fire at longer range and would she get time to correct initial errors? QM was firing at Seydlitz and scored three hits destroying a turret and putting another main gun out of action. Three 15” hits or possibly more given Hood’s better FC and longer range. Could she have crippled Seydlitz before coming into 30.5cm range then shifted fire to another German ship?
Protection - QM was hit by three 28cm from Seydlitz, two with unknown effects but no loss of speed or firepower, one which knocked out a main gun. Derfflinger hit her twice with 30,5cm, setting off the forward magazine. Could Hood Hood survive this and, if so, then more hits by both sides?
Armament - Again, earlier opening of fire? Lion hit Lutzow once before losing Q turret, then once again from six guns and twice more late in the battle (? going by wiki) with one hit late on Derfflinger. Six or more 15” hits, mostly on Lutzow, two, maybe three of those before she met the GF and Invincible.
The BCF also fired on the German PDN squadron at the close of the day battle, scoring several hits.
Protection - Lion was hit several times but the most critical was the hit that burnt out Q, on the joint of the 9” face and 3.5” roof; Hood’s MkII turrets were a different shape but a hit there would be on a 15” / 5” joint.