Japanese Coastal Defense Gun

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Japanese Coastal Defense Gun
Japanese Coastal Defense Gun is located in Northern Mariana Islands
Japanese Coastal Defense Gun
Location East of Songsong
Nearest city Songsong (Rota), Northern Mariana Islands
Coordinates 14°7′26″N 145°10′05″E / 14.12389°N 145.16806°E / 14.12389; 145.16806Coordinates: 14°7′26″N 145°10′05″E / 14.12389°N 145.16806°E / 14.12389; 145.16806
Area less than one acre
Built 1941
Built by Japanese Military
Governing body State
NRHP Reference # 84000422[1]
Added to NRHP November 2, 1984

The Japanese Coastal Defense Gun near Songsong (Rota), MP, is a historic site that is listed on the U.S. National Register of Historic Places. The gun emplacement was built by the Japanese military in 1941. It was listed on the National Register in 1984.[1]

The gun included is a Japanese 140 millimeter coastal defense gun of Model 3 type. It is placed in a camouflaged, reinforced concrete casemate within the cliff overlooking the entrance to Rota's East Harbor. Its casemate is 7.7 metres (25 ft) wide and 6.6 metres (22 ft) deep. The defense gun itself was manufactured in Japan in 1925, and is bolted into place.[2]

Japanese Coastal Defense Gun on the island of Rota, Northern Mariana Islands.


  1. ^ a b "National Register Information System". National Register of Historic Places. National Park Service. 2010-07-09. 
  2. ^ Scott Russell (August 23, 1983). "National Register of Historic Places Inventory/Nomination: Japanese Coastal Defense Gun". National Park Service.  and accompanying two photos from 1984