Honolulu in Honolulu County, Hawaii — Hawaiian Island Archipelago (Pacific Ocean)

REMOVED

SEE LOCATION SECTION

40 MM Quad Gun Assembly

Bowfin Park

Photographed by Don Morfe, November 12, 2008

1. 40 MM Quad Gun Assembly Marker

Inscription. This gun assembly consists of four recoil-operated, heavy machine guns, designed primarily for anti-aircraft fire. Each gun had a firing rate of 120 rounds per minute and fired a two lb. projectile. It had a maximum horizontal range of about 33,000 feet and maximum ceiling range of 22,800 feet. This type of gun was used on destroyer escorts and on all classes of larger ships. Single 40 MM guns were used on submarines for defense against air and surface targets.

Topics. This historical marker is listed in these topic lists: War, World II • Waterways & Vessels.

Location. Marker has been permanently removed. It was located near 21° 22.134′ N, 157° 56.298′ W. Marker was in Honolulu, Hawaii, in Honolulu County. It was on Arizona Memorial Drive. Touch for map. Marker was in this post office area: Honolulu HI 96818, United States of America.

We have been informed that this marker is no longer there and will not be replaced. This page is an archival view of what was.

Regionally, this marker was on Hawaii’s Pearl Harbor and Historic West Oahu.

Globally, it was in

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North America,

Polynesia,

the Pacific Ocean,

North Pacific,

the Pacific Rim,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Other nearby markers. At least 8 other markers are within walking distance of this location: Multiple All Up Round Canister (MAC) (here, next to this marker); Submarine Rocket (SUBROC) (a few steps from this marker); Mark 45 Nuclear Capable Torpedo (a few steps from this marker); Top Secret Kaiten: Suicide Weapon (a few steps from this marker); Inside a Kaiten (a few steps from this marker); Mark 37 Electric Torpedo (within shouting distance of this marker); A Desperate Measure (within shouting distance of this marker); Mark 27 Torpedo (within shouting distance of this marker). Touch for a list and map of all markers in Honolulu.

Another marker is no longer nearby. Kaiten (was a few steps from this marker but has been replaced with another marker now near it).

40 MM Quad Gun Assembly image. Click for full size.

Photographed by Don Morfe, November 12, 2008

2. 40 MM Quad Gun Assembly

40 MM Quad Gun Assembly-Distant shot image. Click for full size.

Photographed by Don Morfe, November 12, 2008

3. 40 MM Quad Gun Assembly-Distant shot

Sign at the entrance to the Park image. Click for full size.

Photographed by Don Morfe, November 12, 2008

4. Sign at the entrance to the Park

Credits. This page was last revised on January 28, 2026. It was originally submitted on March 12, 2015, by Don Morfe of Baltimore, Maryland. This page has been viewed 592 times since then and 38 times this year. Last updated on January 23, 2026, by Darren Jefferson Clay of Duluth, Georgia. Photos: 1, 2, 3, 4. submitted on March 12, 2015, by Don Morfe of Baltimore, Maryland. • Devry Becker Jones was the editor who published this page.