File:Old railway jetty at Landguard Point - geograph.org.uk - 982614.jpg
Old_railway_jetty_at_Landguard_Point_-_geograph.org.uk_-_982614.jpg (640 × 421 pixels, file size: 66 KB, MIME type: image/jpeg)
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Summary
[edit]DescriptionOld railway jetty at Landguard Point - geograph.org.uk - 982614.jpg |
English: Old railway jetty at Landguard Point These timber baulks once carried rail lines to the end of the jetty. The railway was linked to Landguard Fort where, in the latter part of the 19th century and the early years of the 20th century, a system of using submerged mines was devised to protect the approaches to Harwich Harbour.
The railway was used to transport the mines, using hand-pushed trucks, to the jetty where they were loaded on ships and deployed in the harbour. The mines were anchored by heavy plates and floated to within about twenty feet of the surface (at low water). At this depth they did not interfere with the normal traffic entering and leaving the port. Cables from the mines were connected to the fort's observation post, which was complete with telescope and rangefinder. The telescope would be trained on the bows of an intruding vessel and when the vessel reached the location of one of the mines an electrical contact was automatically made and the mine exploded. The mines were designed to cause an upsurge of water so that the vessel would be disabled, not blown up. |
Date | |
Source | From geograph.org.uk |
Author | Bob Jones |
Attribution (required by the license) InfoField | Bob Jones / Old railway jetty at Landguard Point / |
InfoField | Bob Jones / Old railway jetty at Landguard Point |
Camera location | 51° 55′ 58″ N, 1° 19′ 09″ E | View this and other nearby images on: OpenStreetMap | 51.932690; 1.319100 |
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Object location | 51° 55′ 57″ N, 1° 19′ 11″ E | View this and other nearby images on: OpenStreetMap | 51.932500; 1.319600 |
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Licensing
[edit]This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by Bob Jones and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:57, 23 February 2011 | 640 × 421 (66 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Old railway jetty at Landguard Point These timber baulks once carried rail lines to the end of the jetty. The railway was linked to Landguard Fort where, in the latter part of the 19th century and t |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon EOS 40D |
Exposure time | 1/40 sec (0.025) |
F-number | f/18 |
ISO speed rating | 250 |
Date and time of data generation | 14:06, 26 September 2008 |
Lens focal length | 35 mm |
Orientation | 0 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Paint Shop Pro Photo 12.00 |
File change date and time | 00:15, 27 September 2008 |
Y and C positioning | Co-sited |
Exposure Program | Shutter priority |
Exif version | 2.21 |
Date and time of digitizing | 14:06, 26 September 2008 |
APEX shutter speed | 5.375 |
APEX aperture | 8.375 |
APEX exposure bias | 0.33333333333333 |
Metering mode | Center weighted average |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 00 |
DateTimeOriginal subseconds | 00 |
DateTimeDigitized subseconds | 00 |
Color space | sRGB |
Focal plane X resolution | 4,438.3561643836 |
Focal plane Y resolution | 4,445.9691252144 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Scene capture type | Standard |
Structured data
Items portrayed in this file
depicts
26 September 2008
51°55'57.68"N, 1°19'8.76"E
51°55'57.00"N, 1°19'10.56"E
- Information field template with formatting
- Files with coordinates missing SDC location of creation (51° N, 1° E)
- CC-BY-SA-2.0
- Images from Geograph Britain and Ireland
- Images from Geograph Britain and Ireland missing SDC depicts
- Images from Geograph Britain and Ireland missing SDC location of creation
- Images from Geograph Britain and Ireland missing SDC MIME type
- Images from Geograph Britain and Ireland missing SDC geograph.org.uk image ID
- Media needing category review as of 3 May 2017
- Images by Bob Jones
- United Kingdom photographs taken on 2008-09-26