Q&A ยท 1:41:30-1:41:51

Did pressurised boiler rooms worsen torpedo losses?

Forced-draft machinery made boiler-room pressurisation a genuine vulnerability when a torpedo opened the space to the sea.

Question

Did pressurised boiler rooms contribute to armoured cruisers sinking quickly after torpedo hits?

Short answer

They could; forced-draft boiler rooms were effectively pressurised, making this a genuine vulnerability when the hull was breached.

Notes

Forced-draft boiler rooms were effectively pressurised during operation, so overpressure was a real vulnerability when a torpedo opened the space to the sea. Machinery arrangement and ventilation pressure could therefore compound underwater damage. This was one contributing factor rather than a complete explanation for every sinking.