Why the stored-steam submarine boost is rejected

Could a submarine use stored steam pressure as a short burst of extra propulsion?

The proposal is rejected because of heat loss, objections to the energy store, and the difficulty of integrating it with electric propulsion. Its operational value is also questioned.

The proposed system would keep steam under pressure and release it for a short burst of submarine speed. The answer objects that stored steam would lose heat and energy over time, and rejects treating water as a compressible energy reserve. Integrating the proposed burst with an electric drive is considered another major complication. Supercavitation is also raised as an objection, without a speed or propulsion calculation. The practical question is why a submarine would need this brief acceleration when it usually has little reason to run at high speed.