The High Seas Fleet was another example of quantitative inferiority.
The Germans had better ships than the Grand Fleet, but not enough of ‘em. The Grand Fleet had a decisive advantage in numbers and weight of fire. Jellicoe almost had ‘em at Jutland, but Beatty let him down. The Germans kept trying to pull the Grand Fleet into a submarine or destroyer ambush to even the odds, but never quite succeeded.
That was what the Brits were afraid of (a submarine ambush) but if you stop & think about it the coordination of submarines & surface vessels was never really achieved.
Not only that, but a large warship is a lot tougher target for a sub to takedown than a slow, fat merchantman. Remember that the 3 cruisers sunk by the U-9 in 1914 were all pre-dreadnought era armored cuisers. Not vessels serving with the Royal Navy's battleline.
When the German High Seas Fleet did the "battle turn" Jellicoe's imagination got the better of him.
Jellico was described (by Churchill) as the only man who could have lost the war in an afternoon. Probably true.