https://www.indigo.ca/en-ca/u-boat-1936-45-type-viia-b-c-and-type-viic%2F41-an-insight-into-the-design-construction-and-operation-of-the-most-feared-german-u-boat-of-world-war-2/9780857334046.html
Buy the book U-Boat 1936-45 (Type VIIA, B, C and Type VIIC/41): An insight into the design, construction and operation of the most feared German U-boat of...
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