How many German U-boats were available in September 1939?
The German U-boat fleet numbered only fifty-seven vessels in September 1939. Most of these boats were small Type II designs intended for coastal minelaying rather than deep ocean warfare.
Short answers, pulled from the story.
The German U-boat fleet numbered only fifty-seven vessels in September 1939. Most of these boats were small Type II designs intended for coastal minelaying rather than deep ocean warfare.
May 1943 became known as Black May when wolf packs lost their advantage and suffered heavy losses. During this month, one hundred twenty ships were sunk worldwide while twelve U-boats were destroyed by Allied countermeasures.
High-frequency direction-finding equipment known as HF/DF started fitting onto escorts from February 1942. These sets enabled operators to determine signal direction regardless of content readability since wolf packs relied on radio reports.
This area became known as the Black Pit or air gap because Allied aircraft could not provide cover over those waters. On July nineteenth 1942 Dönitz ordered U-boats withdrawn from American waters shifting focus back to North Atlantic where this lack of air support existed.
The Atlantic loss included three thousand five hundred merchant ships and one hundred seventy-five warships sunk. German tonnage war failed at great cost with four battleships nine cruisers seven raiders and twenty-seven destroyers also lost alongside the submarines.