Hood belonged to the Admiral-class battlecruiser design, whose corresponding battleship was considered but never built. The comparison with G3 raises the possibility that later terminology might have described such ships as fast battleships. Battlecruisers could carry armour comparable in thickness to an earlier battleship generation while protecting a smaller area. Comparing thickness alone therefore misses a distinction in the extent of protection.
Notable Point · 2:50:30-2:51:19
Why HMS Hood remained a battlecruiser
Hood is classified as a battlecruiser because that was the contemporary type and her intended battleship counterpart was never built.