Report on Projectile Search and Observation Analysis — Östersund, 1946

This document, dated August 22, 1946, and authored by L. Falk of Lvoff, details the ongoing search for a projectile in the vicinity of Östersund. The report outlines the methodology used to determine the most probable impact zone, utilizing observations from two distinct points (opl 1 and opl 3). The author establishes a search area defined by a triangle formed by the observation lines and the shoreline. A critical analysis of the trajectory suggests that initial estimates of the projectile's height (100 meters) and dive angle (30 degrees) were likely flawed, as observations from the second point indicated the object was still airborne further north than initially calculated. The search, which began on August 17, 1946, involves dragging the lake bottom with chains. An attempt to use an electric mine detector (m/42) proved ineffective, as the device could not detect objects at depths exceeding approximately 20 centimeters. The report concludes by noting that the northern boundary of the search area remains uncertain, contingent upon whether the projectile sank immediately upon impact or skipped across or beneath the water's surface.