Report for Portage Lake Ship Canals Breakwater West Light (Michigan) - 1910
General |
District: | 9th |
Inspector: | Oliver G. Brown |
Location: | Portage Lake Ship Canal West Breakwater Light. On outer end of the West breakwater at entrance to Portage Lake Ship Canals, Mich. NW'ly shore of Keweenaw Peninsula, Lake Superior. |
Date of Report: | 08/03/1910 |
Latitude: | 47° 14' 02" |
Longitude: | 88° 37' 54" |
Premises |
Site: | On end of breakwater by permission of War Department. |
Date of Reservation: | |
Date of Deed: | |
Date of Permission: | |
Date of Lease: | |
Area of the Entire Site: | |
Area Inclosed: | |
Character of Soil: | |
Distance of tower from Nearest High-Water Mark: | |
Inclosures to Premises / Type of Fence: | |
Wharf or Landing on Premises: | |
Road to Land or Wharf Chararacter of and Distance: | |
Means to Reach Light Station: | By boat only-see description of Portage Lake Ship Canals Main. |
Distance to Nearest Road: | |
Distance to Post Office: | |
Distance to Village: | |
Facilities for Public Conveyance: | |
Facilities for Private Conveyance: | |
Means Used for Support of Lantern: | Tower |
Number of Separate Lights: | 1 |
First Built or Established: | 1902 |
Last Rebuilt, Repaired, or Renovated: | 1903 |
Condition at This Date: | Fair. |
Shape of Tower in Plan: | Square. |
Form of Tower: | Pyramidal. |
Height from Base to Ventilator Ball: | |
Height of Focal Plane Above Mean High Water: | 32 feet. |
Background of Lighthouse as Seen from Sea: | |
Color of Tower: | White |
Color of Tower/ How Produced: | Paint |
Tower Connection: | Tower is on end of breakwater approached along breakwater or by boat. |
Object of Navigation: | Guide to entrance to Portage Lake Ship Canals. |
Building Materials: | Skeleton structural steel frame with circular lantern deck. |
General Description: | |
Wall Thickness at Base: | Corner Posts of 6" x 6" x 5/8" "L"'s |
Wall Thickness at Parapet: | Corner Posts of 6" x 6" x 5/8" "L"'s |
Diameter at Base: | 9' 0" |
Diameter at Parapet: | 3' 4" |
Kind of Stairway and Steps: | An iorn ladder is attached to outside of tower. |
Number of Landings: | None. |
Size of Glass: | |
Number of Windows and Size of Sash: | |
Number of Doors: | |
Kind of Foundation and Depth Below Surface: | Anchored to planking of breakwater. |
Character of Soil Surrounding the Lighthouse: | |
Soil Susceptibility: | |
Miscellaneous Remarks: | White square pyramidal steel tower with black lantern & gallery. |
Lantern and Fixtures |
Order of Lantern: | Pintasch gas buoy lantern. |
Shape of Lantern: | |
Diameter to Glass: | |
Diameter in the Clear: | |
Number of Sides: | |
Type of Bars: | |
Thickness of Bars: | |
Height Glazed: | |
Number of Plates in Height: | |
Number of Plates Each Side: | |
Thickness of Plates: | |
Size of Plates: | |
Number of Storm Panes: | |
Unglazed Side of Lantern: | |
What Bearings: | |
Construction Material Lantern: | |
Construction Material Roof / Cowl: | |
Ventilator / Cowl: | |
Lightning Spindle: | |
Description of Lightning Rod: | |
Balustrade: | Gallery floor of 3/8" steel plate & cirular in plan - 2" x 1/2" flat iorn rail with vertical stanchions 1" in diameter. |
Lantern Doors: | |
Floor of Lantern: | Steel plate 3/8" |
Watchroom Doors: | |
Parapet Diameter: |
Illuminating Apparatus |
Kind of Apparatus: | |
Intensity in Candles: | |
Name of Maker: | |
Year Made: | |
Marks and Number: | 1062 |
Order of Apparatus: | |
Inside Diameter: | |
Light Characteristic: | |
Time of Revolution: | |
Flash Interval: | |
Duration of Flash: | |
Arc of Each Fixed Part: | |
Number of Panels: | |
Number of Flash Panels: | |
Arc of Each: | |
Number of Elements in Central Drum: | |
Number of Prisms Above Center Drum: | |
Number of Prisms Below Center Drum: | |
Does Apparatus Revolve?: | False |
Is There a Revolving Belt?: | False |
Revolving Panels: | |
How Flash is Produced: | |
Number of Vertical Elements Panel: | |
Fixed Lens Covered: | |
Pedestal: | |
Service Table: | |
Draft Tube Description: | |
Revolving Machinery: | |
Standby and Description: | |
Chariot Float or Balls: | |
Chariot Description: | |
Length of Drop Tube: | |
Clock Weight: | |
Length of Winding Time: | |
Drive During Rewind: | |
Machinery Protection: | |
Regulated: | |
Lens Protection: | |
How Color is Produced: | |
Red Sectors Description: | |
Where Color Attached: | |
Form of Colored Glass: | |
Lamp Description: | |
Type of Illuminant: | Gas |
Number of Spare Lamps: | |
Number of Spare Burners: | |
Candle Power: |
Compressed Gas |
Gas Container: | |
Compressed Gas Capacity: | |
Compressed Gas Charge: | |
How Supply Renewed: | Recharged by tender through wooden trap door |
At What Intervals: | |
Spare Containers: |
Gas Light |
Gas Light Kind: | |
Gas Light Number of Burners: | |
Kind of Burner: | |
Candlepower Per Burner: | |
Total Candlepower: | |
Consumption Gas Burner Per Hour: | |
Total Consumption Per Hour: | |
How Gas Obtained: | 2 cylindrical steel tanks under breakeater decking. |