Good afternoon Jim

The following is an edited extract from "The Sea Wolves" by Wolfgang Frank:
The Sudeten Crisis or "Second Punic War" in the autumn of 1938 caused the U-boats to be brought once more to a state of war readiness. His request for depot ships to accompany the U-boats on shakedown cruises abroad was granted, but no change in the building program was conceded.
About this time an engineer named Walter, who had invented the hydrogen-peroxide gas turbine, came to see Dönitz at Kiel. He demonstrated the value of the "Aurol" fuel for underwater propulsion and asked for Dönitz's support, explaining that the German Admiralty, to whom he had offered his inventions, did not seem to appreciate their significance. He claimed that a boat built to his designs should be capable of maintaining a submerged speed of 23 to 25 knots over a long period without difficulty.
Dönitz at once realized the possibilities of this invention and pledged his fullest support.
Knowing only too well how memoranda ended up unanswered in filing cabinets, he determined to speak his mind to the commander in chief at the first opportunity. When at length he was able to do so, Admiral Raeder listened attentively but rather skeptically. He pointed out that, while Walter did not lack support in the appropriate departments of the Admiralty, the amount of time required to develop such a revolutionary process would not be economical. Dönitz retorted that even if Walter's claims should not be completely realized in trials, the effort would still be justified.

That seems to be all. Elsewhere there is some mention of ESSO in relation to this item in GOOGLE. but what?

Phil