Russian submarine Pochtovy

Russian submarine Pochtovy

The "Pochtovy" (Почтовый) was a submarine built for the Imperial Russian Navy. The boat was designed by Drzewiecki and built at the Metal Works St Petersburg in 1908. She was funded by Public subscription.

This ship's machinery was a novel attempt at Air Independent Propulsion (AIP) using gasoline engines with oxygen supplied by pressurised cylinders. Forty-five cylinders containing 350 cubic feet of air at 2500 psi could give the boat a 28 nautical mile submerged range. The exhaust gasses were vented via perforated pipe under the keel. The system proved reliable in trials but condensation problems and the tale-tale wake produced by the exhaust resulted in no further development and the boat was stricken in 1913.

References

* Conway's "All the World's Fighting Ships 1906-1921"


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