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

Mark 37 Electric Torpedo

Photographed by Darren Jefferson Clay, November 26, 2025

1. Mark 37 Electric Torpedo Marker

Inscription. The Mk 37 was an early submarine-launched, acoustic homing, anti-submarine torpedo. With electric propulsion, it swam quietly and smoothly out of the torpedo tube.

The Mk 37 is still used as a submarine-launched mobile mine.

Weight: approx. 1,700 pounds
Length: 13.5 feet
Diameter: 19 inches
Range: 23,000 yards at 17 knots
10,000 yards at 26 knots

Topics. This historical marker is listed in these topic lists: Military • Waterways & Vessels.

Location. 21° 22.134′ N, 157° 56.313′ W. Marker is in Honolulu, Hawaii, in Honolulu County. It can be reached from Arizona Memorial Road, on the left when traveling north. Touch for map. Marker is at or near this postal address: 11 Arizona Memorial Road, Aiea HI 96701, United States of America. Touch for directions.

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

Globally, it is in 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

Paid Advertisement

Click or scan to see
this page online

walking distance of this marker: Mark 27 Torpedo (here, next to this marker); Mark 45 Nuclear Capable Torpedo (here, next to this marker); Top Secret Kaiten: Suicide Weapon (here, next to this marker); USS Parche (here, next to this marker); A Desperate Measure (a few steps from this marker); Inside a Kaiten (a few steps from this marker); Submarine Rocket (SUBROC) (a few steps from this marker); Mark 14: Early Failures (a few steps from this marker). Touch for a list and map of all markers in Honolulu.

Another marker is no longer nearby. Kaiten (was here, next to this marker but has been replaced with another marker now near it).

Photographed by Darren Jefferson Clay, November 26, 2025

2. Mark 37 Electric Torpedo Marker

Credits. This page was last revised on January 26, 2026. It was originally submitted on January 23, 2026, by Darren Jefferson Clay of Duluth, Georgia. This page has been viewed 31 times since then. Photos: 1, 2. submitted on January 23, 2026, by Darren Jefferson Clay of Duluth, Georgia. • Andrew Ruppenstein was the editor who published this page.