Vincennes in Knox County, Indiana — The American Midwest (Great Lakes)
3"/50 caliber gun Mk2
A.K.A. Dual-Purpose Naval Gun
Photographed By Jason Voigt, July 23, 2021
1. 3"/50 caliber gun Mk2 Marker
Inscription.
3"/50 caliber gun Mk2. A.K.A. Dual-Purpose Naval Gun. The 3"/50 caliber gun (Mark 2) was an early model manufactured by General Motors with a projectile velocity of 2,100 feet per second. Low-angle mountings for this gun had a range of 7000 yards at the maximum elevation of 15 degrees. By World War II these guns were found only on a few Coast Guard cutters and Defensively Equipped Merchant Ships. In United States naval gun terminology the name indicates the gun fired a projectile 3 inches in diameter, and the barrel was 50 calibers long (barrel length is 3" x 50 = 150"). Different guns (identified by Mark numbers) of this caliber were used by the U.S. Navy and U.S. Coast Guard from 1890 through the 1990s on a variety of combatant and transport ship classes. In 1992, The US Coast Guard Cutter Storis (WMEC-38) had its 3"/50 caliber main battery removed from the cutter. It was the last 3"/50 caliber gun in service aboard any US warship., Weight - 7,500 lbs. , Caliber - 3 in. , Crew - 7 , Max Range - 14,600 yards , Rate of fire - 20 rds. Per min. , Sights - Peep-site and Optical telescope
The 3"/50 caliber gun (Mark 2) was an early model manufactured by General Motors with a projectile velocity of 2,100 feet per second. Low-angle mountings for this gun had a range of 7000 yards at the maximum elevation of 15 degrees. By World War II these guns were found only on a few Coast Guard cutters and Defensively Equipped Merchant Ships. In United States naval gun terminology the name indicates the gun fired a projectile 3 inches in diameter, and the barrel was 50 calibers long (barrel length is 3" x 50 = 150"). Different guns (identified by Mark numbers) of this caliber were used by the U.S. Navy and U.S. Coast Guard from 1890 through the 1990s on a variety of combatant and transport ship classes. In 1992, The US Coast Guard Cutter Storis (WMEC-38) had its 3"/50 caliber main battery removed from the cutter. It was the last 3"/50 caliber gun in service aboard any US warship.
Weight - 7,500 lbs.
Caliber - 3 in.
Crew - 7
Max Range - 14,600 yards
Rate of fire - 20 rds. Per min.
Sights - Peep-site and Optical telescope
Topics. This historical marker is listed in this topic list: War, World II.
Location. 38° 40.42′ N, 87° 32.28′ W. Marker is in Vincennes, Indiana, in Knox County. Marker can be reached from South
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6th Street west of Willow Street (Business U.S. 41). Marker is located outside Indiana Military Museum. Touch for map. Marker is at or near this postal address: 715 S 6th St, Vincennes IN 47591, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. D.U.K.W. (within shouting distance of this marker); Original Tombstone of Capt. Menomen O'Donnell (within shouting distance of this marker); LVT-4 (within shouting distance of this marker); M-47 (within shouting distance of this marker); USS Indianapolis (within shouting distance of this marker); M5 3 inch gun (within shouting distance of this marker); F-16 Fighting Falcon (within shouting distance of this marker); M-114, 155 mm Howitzer (within shouting distance of this marker). Touch for a list and map of all markers in Vincennes.
Photographed By Jason Voigt, July 23, 2021
2. 3"/50 caliber gun Mk2 Marker
Marker is outside the Indiana Military Museum.
Credits. This page was last revised on September 1, 2021. It was originally submitted on September 1, 2021, by Jason Voigt of Glen Carbon, Illinois. This page has been viewed 201 times since then and 41 times this year. Photos:1, 2. submitted on September 1, 2021, by Jason Voigt of Glen Carbon, Illinois.
