草稿:馬丁礁燈塔 (密歇根州)

馬丁礁燈塔
地圖
位置N Lake Huron, 4.3英里(6.9公里) S of Cadogan Point
座標45°54′48″N 84°8′54″W / 45.91333°N 84.14833°W / 45.91333; -84.14833
啟用年份1927[1]
塔基crib[1]
構造reinforced concrete & steel[1]
塔形square[1]
標識white with red roof[1]
塔高52英尺(16米)[2]
焦距65英尺(20米)[2]
初始燈器fourth order Fresnel lens[3] (original), 7.9-英寸(200-毫米) acrylic lens[3] (current)
光程13海里(24公里;15英里)[4]
燈號頻率英語Light characteristicFI R 10s[4]
Martin Reef Light Station
最近城市Clark Township, Michigan
佔地面積less than one acre
建築師US Lighthouse Service
MPSLight Stations of the United States MPS
NRHP編號05000743[5]
NRHP收錄July 27, 2005




參考資料

  1. ^ 1.0 1.1 1.2 1.3 1.4 Historic Light Station Information & Photography: Michigan. United States Coast Guard Historian's Office. [June 9, 2012]. 
  2. ^ 2.0 2.1 Inventory of Historic Light Stations Michigan Lighthouses: Martin Reef. National Park Service. [June 10, 2012]. 
  3. ^ 3.0 3.1 引用錯誤:沒有為名為pepper的參考文獻提供內容
  4. ^ 4.0 4.1 Light List: Volume VII: Great Lakes (PDF), United States Coast Guard: 117, 2012 
  5. ^ National Register Information System. National Register of Historic Places. National Park Service. 2010-07-09. 

外部連結