5 inch 38 caliber artillery being fired and calculations being made at U.S. Naval proving grounds in Dahlgren, Virginia.
Dahlgren Virginia USA Date:1951 Duration:6 min 31 sec Sound:Yes
A training film about the activities being carried out at United States naval proving grounds in Dahlgren, Virginia. Photographs of ancient ships at sea. An aircraft lands aboard an aircraft carrier. View of the U.S. naval proving grounds in Dahlgren, Virginia. An artillery at the ground. Velocity towers with coils used to determine velocity of a projectile fired. A number of booklets with a sign on them that reads 'AA range table'. Main battery building with the Firing officer at the bridge as he prepares for firing a 5 inch 38 caliber artillery. Men talk over phones as they check their communication instruments. A range boat stands by to ensure clearance of the area before artillery fire. Firing officer checks the firing circuit. Men prepare to record the velocity of the shell through photographs. Coils being raised to correspond with the angle of gun barrel. At the projectile house projectiles being numbered, weighed and measured. A balloon with a radio fixed to it being released to get weather information. Men at the gun mount as they magnetize the shells. Firing officer makes safety checks and 5 inch 38 caliber artillery being fired. Technicians record the velocity of the shell photographically. Photographic strip being developed. Technicians undertake calculation of data range table with the help of a map. Men unroll a map and work on it.
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