Mark 37 ‘Long Threes’ Preserved
A recent addition to Naval Station Norfolk’s Gate 2 are a pair of historic, and rare, Cold War era twin mounts: two twin 3″/70 Mark 26 guns in Mark 37 mounts.
The guns came from the old USS Norfolk (DL-1), the one-off ASW destroyer flotilla leader commissioned in 1953.
The first major warship not built to a WWII design, she was as big as a light cruiser (5,600 tons, 540-feet), carried eight 21-inch torpedo tubes, 4 twin 3″/70 Mark 37s, and Weapon Alpha/Able, the latter a gee-whiz sub-buster that could toss a dozen 525-pound ASW rockets to 800 yards

USS Norfolk (DL-1) was one of the few ships outfitted with Weapon Alpha. Two of the four mounts can be seen side-by-side forward of the bridge. Note two of her twin 3″/70s forward. She is seen here in 19 September 1957. NH 94160
While Weapon Alpha was replaced by ASROC, the rapid-fire 3″/70s were almost as quickly phased out with four mounts on the command light cruiser USS Northampton (CLC-1), four on Norfolk, and two each on the four Mitscher-class DLs for a total of about 16 or so mounts. They were fast, capable of firing as many as 100 15-pound shells per minute to 38,000 feet in an AAA role (19,500 yards range at 45 degrees).
Once Norfolk was scrapped in 1974, two remaining 3″/70 mounts were originally on display at the Recruit Training Center (RTC) Orlando. After the center closed in the mid-1990s and all recruit training consolidated at Great Lakes, they were moved to the Boca Raton Community High School in Florida and finally to Naval Station Norfolk in 2020, where they have been in storage for a bit.
Restored back in May, they arrived at Gate 2 for duty renewed.



















