Turbo-electric drive traded weight for flexibility and range

Was turbo-electric drive heavier than steam turbines producing the same power?

Yes, but the weight bought resilient power distribution, flexible machinery arrangement, rapid reversing, improved efficiency, and additional range.

Turbo-electric propulsion was heavier than geared turbines, but it allowed any generator to power any shaft and let prime movers operate near efficient speeds. The flexible machinery layout could deepen torpedo protection within Panama Canal beam limits. Electric motors could also shift rapidly from full ahead to full reverse in an emergency. For the US Navy, the added efficiency promised greater range without enlarging fuel capacity.