Hull framing reveals battleship and battlecruiser priorities

What difference in framing separates a battlecruiser from a battleship?

Battleships carried denser framing for strength and subdivision, while battlecruisers reduced framing and armor weight to gain speed and cruising qualities.

A battleship used dense internal framing to create smaller compartments, strengthen the hull, and limit the spread of flooding after damage. That structural weight supported survival in a prolonged heavy-gun engagement. A battlecruiser sacrificed some framing and armor to reduce displacement and gain speed, range, and more workable internal spaces. The underlying hull structure, beyond published armor figures or later labels, helps distinguish where a ship sits on the battleship-to-cruiser spectrum.