Report for Seven-foot Knoll (Maryland) - 1909
General |
District: | 5th |
Inspector: | Major W. E. Craighill, Light-House Engineer |
Location: | Seven-Foot Knoll, Md., off the mouth of Patapsco River, about 1/4 mile NE'ly from Cutoff Channel, and about midway of its length. |
Date of Report: | 05/05/1909 |
Latitude: | 39° 09' 19" |
Longitude: | 76° 24' 33" |
Premises |
Site: | Submarine |
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: | Boat |
Distance to Nearest Road: | 6 miles, to railroad station |
Distance to Post Office: | 6 miles |
Distance to Village: | 6 miles |
Facilities for Public Conveyance: | None |
Facilities for Private Conveyance: | Small boat, 6 miles |
Means Used for Support of Lantern: | Dwelling |
Number of Separate Lights: | 1 |
First Built or Established: | 1855 |
Last Rebuilt, Repaired, or Renovated: | |
Condition at This Date: | Good |
Shape of Tower in Plan: | Screwpile, Substructure, octagonal; superstructure, circular. |
Form of Tower: | Cylindrical |
Height from Base to Ventilator Ball: | |
Height of Focal Plane Above Mean High Water: | 42 feet |
Background of Lighthouse as Seen from Sea: | Woods |
Color of Tower: | Brown |
Color of Tower/ How Produced: | Paint |
Tower Connection: | |
Object of Navigation: | Bay, general |
Building Materials: | |
General Description: | |
Wall Thickness at Base: | |
Wall Thickness at Parapet: | |
Diameter at Base: | 40 feet |
Diameter at Parapet: | 12 feet |
Kind of Stairway and Steps: | Wood |
Number of Landings: | 1 |
Size of Glass: | 10" x 15" |
Number of Windows and Size of Sash: | 6 - 2' 4" x 3' 4" & 5' 10" x 3' 2.5" |
Number of Doors: | 16 |
Kind of Foundation and Depth Below Surface: | Mud & sand, 35 feet |
Character of Soil Surrounding the Lighthouse: | |
Soil Susceptibility: | |
Miscellaneous Remarks: | Circular dwelling on octagonel screwpile foundation, and supporting lantern with illuminating apparatur. |
Lantern and Fixtures |
Order of Lantern: | 4th |
Shape of Lantern: | Cylindrical |
Diameter to Glass: | 76.5 inches |
Diameter in the Clear: | |
Number of Sides: | |
Type of Bars: | Helical |
Thickness of Bars: | |
Height Glazed: | 35 5/8" |
Number of Plates in Height: | 1 |
Number of Plates Each Side: | 1 |
Thickness of Plates: | 3/8" |
Size of Plates: | 12" x 29" x 37" |
Number of Storm Panes: | |
Unglazed Side of Lantern: | |
What Bearings: | |
Construction Material Lantern: | Iron |
Construction Material Roof / Cowl: | Iron |
Ventilator / Cowl: | Iron |
Lightning Spindle: | Iron |
Description of Lightning Rod: | Iron rod extending from ball of lantern |
Balustrade: | Iron |
Lantern Doors: | Iron, fitted with hinges to outside of lantern |
Floor of Lantern: | Iron |
Watchroom Doors: | Iron, fitted with hinges to floor of lantern |
Parapet Diameter: | 6 feet |
Ventilators |
Location / Number: | Lower part of lantern |
Ladders / Cleaning Arrangement: | One, wood |
Curtain Hooks / Hanger: | Screwed |
Watchroom |
How is Watchroom Fitted: | Fitted with service table and shelves |
How is Relief Called: | |
Where is Call System Led: |
Illuminating Apparatus |
Kind of Apparatus: | |
Intensity in Candles: | |
Name of Maker: | L. Sautter Co. |
Year Made: | Not given |
Marks and Number: | None |
Order of Apparatus: | 4th |
Inside Diameter: | 19.5 inches |
Light Characteristic: | Fixed white with red sector |
Time of Revolution: | |
Flash Interval: | |
Duration of Flash: | |
Arc of Each Fixed Part: | |
Number of Panels: | 4 |
Number of Flash Panels: | |
Arc of Each: | |
Number of Elements in Central Drum: | 5 |
Number of Prisms Above Center Drum: | 5 |
Number of Prisms Below Center Drum: | 3 |
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: | Iron |
Service Table: | Iron |
Draft Tube Description: | None |
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: | Ruby glass |
Red Sectors Description: | 133 degrees 30' true (SE 3/8 S) mag. & 334 degrees 30' true (N 7/8 W) mag. |
Where Color Attached: | To lantern |
Form of Colored Glass: | |
Lamp Description: | 4th order, one wick |
Type of Illuminant: | |
Number of Spare Lamps: | 2 |
Number of Spare Burners: | None |
Candle Power: |
Closets and Store Rooms |
Tower Closet Use: | |
Oil House Description: | Room on 1st floor, fitted with stand |
Oil House Inside Dimension: | 30" x 84" |
Oil House Construction Material: | Wood, covered with zinc |
Oil House Capacity: | 50 5-gallon cans |
Other (Describe): | Closets on first floor, fitted with shelves for general purposes. |
Suitability: | Suited |
Fog Signal General |
Fog Signal Kind: | Custer Bell Machine |
Time to Start: | 2 minutes |
How Long Will Pressure Last: | |
Manufacturer: | Not known |
Year of Manufacture: | Not known |
Characteristic: | A single blow every 12 seconds |
Duplication: | None |
Timing Device: | |
If whistle, siren, or trumpet, Pressure at Which Blown: | |
Height Above Water: | |
Compass Direction: | |
Location: | |
Distance and Direction: | |
Water Supply: | |
Reached from Lighthouse: | |
Description of Fog Signal Building: | |
Pressure And Recording Gauge: |
Bell Signal |
Weight: | 1,000 lbs. |
Metal: | Bell metal |
Diameter: | 31" |
Height: | 24.5" |
Time: | 45 minutes |
Manufacturer: | |
Weights for Operation: |
Dwelling |
Location: | Tower and dwelling one structure |
Coloring: | Brown |
Construction Materials: | Iron lined with wood |
Number of Rooms: | 5 |
Number of Dwellings: | |
Heating Plant: | |
Number of Keepers: | 2 |
Furnished Quarters: | |
NOT Furnished Quarters: | |
Outhouses: | |
Outhouse Coloring: | |
Paths and Walks: | |
Area Inclosed: | |
Area of Garden: | |
Area Timber or Shrubbery: | |
Cultivation Area Available: | |
Area Cultivated: | |
Character of Surroundings: | |
Stove, Maker: | |
Stove, Size: | |
Sink, Maker: | |
Sink, Size: | |
Pump, Maker: | |
Pump, Size: | |
Lamps: |
Water |
How Procured: | From roof |
Quality: | Good |
Quantity: | Ample |
Injury Possible: | Not liable |
Purity Precaution: | Tanks cleaned when necessary |
Tank Capacity: | 3 tanks, 200 gallons each, on first floor |
Tank Material: | Iron |
Distilling Apparatus: | False |
Distilling Manufacturer: | |
Well Description: | |
Well Diameter: | |
Well Lining: | |
Pump or Bucket: | |
What Power Used: | |
Distance from Dwelling: |
Healthfulness |
General Opinion: | Good |
Diseases: | Malaria |
Prevalency: | Spring and fall |
Local Causes: | No |
Recommended Improvements: |