| 词条 | Japanese 20mm Cannon Blockhouse |
| 释义 |
| name = Japanese 20mm Cannon Blockhouse | nrhp_type = | image = Japanese 20mm Cannon Blockhouse (32453227890).jpg | caption = | nearest_city= Saipan, Northern Mariana Islands | coordinates = {{coord|15|6|41|N|145|42|7|E|display=inline,title}} | locmapin = Northern Mariana Islands | built = {{Start date|1944}} | architect OR builder = | architecture = | added = August 25, 1995 | area = less than one acre | governing_body = State | refnum = 95001048[1] }} The Japanese 20mm Cannon Blockhouse is one of many relics of World War II on the island of Saipan in the Northern Mariana Islands. It is a concrete blockhouse, semi-circular in shape with a diameter of about {{convert|6|m|ft}}. Its walls are {{convert|1.22|m|ft}} thick with four firing ports large enough to accommodate 20mm cannons, originally equipped with steel sliding shutters. A steel door {{convert|25|mm|in}} thick provides access to the structure at the rear, sheltered by a concrete wall and covered defensively by a machine gun port. The blockhouse is located near the center of what is locally called Big Agingan Beach (Unai Dankulo Agingan), on the south coast of the island, about {{convert|20|m|ft}} from the shore. It was built in some haste by the Japanese forces defending Saipan in 1944, and was captured by Allied forces early in the Battle of Saipan.[2] The blockhouse was listed on the National Register of Historic Places in 1995.[1] See also
References1. ^1 {{NRISref|version=2010a}} {{National Register of Historic Places}}{{NorthernMarianas-stub}}{{NRHP-stub}}2. ^{{cite web|url={{NRHP url|id=95001048}}|title=NRHP nomination for Japanese 20mm Cannon Blockhouse|publisher=National Park Service|accessdate=2015-04-16}} 3 : World War II on the National Register of Historic Places in the Northern Mariana Islands|Buildings and structures on the National Register of Historic Places in the Northern Mariana Islands|Buildings and structures completed in 1944 |
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