Kriegsmarine F-Tafel 1941 III Auflage 2154 u-boot Kriegsmarine arsenal Gotenhafen Wehrmacht panzer gefreiter foto Marked HWSD 39 which stands

Marked HWSD 39 which stands for manufacturer HWSchmidt MetallwarenfabrikDöbeln

Personalized with the name: H

De schede heeft geen beschadigingen of deuken en vertoont het typische kenmerk van deze fabrikant

met lange band

title of which is:Von der Ausbildung im Fliegerhorst

Kriegsmarine F-Tafel 1941 III Auflage 2154 u-boot Kriegsmarine arsenal Gotenhafen Wehrmacht panzer gefreiter foto Marked HWSD 39 which standsKriegsmarine F Tafel III. Edition Hamburg 1941. This book is extremely rare and was mainly used by U boat crews. The book was used to determine the exact position of a ship or submarine on the open sea using the stars, the sun, or the moon. Navigators measured the angle of a celestial body above the horizon with a sextant. The F Tafel contained the mathematical tables needed to quickly convert these measurements into usable altitude lines(navigation