Glenn L. Martin Aircraft Factory, Baltimore, MD.
Assembly of fuselages for PBM "Mariner" patrol bombers, February 1943. These fuselages, just out of the assembly jigs, are on special stands for a watertightness test. Water is placed in the hulls and inspected from the outside. Photographed by Lieutenant Charles Fenno Jacobs, USNR.
Photographed by Lieutenant Charles Fenno Jacobs, USNR.