Koppernaglen - Oslo, Norway

Lighthouse category:  beacon

Position:  59° 53.0'N : 10° 41.0'E

Status: active

Date:  not known

Designer:  not known

Tower height:  23 feet

Construction: cast iron tower with lantern on concrete base, constructed on small rock

Colour scheme: tower and lantern white, lantern roof red

Focal plane height:  20 feet

Characteristics: characteristics of light

Foghorn:  white flash every three seconds

Google map view:  google map link

Here's an object lesson in how to maximise available space.  The rock on which this small light is perched has a circumference that isn't much larger than the circumference of the lantern itself.  To counter this and to provide a landing place, a massive concrete pier has been built on top of the rock to support the lanter, and the pier itself has been jettied out over the rim of the rock.  It's of some note that the lantern here appears to be, for all practical purposes, identical to the one at Bygdøynes, and I am inclined to speculate on whether this lantern was a replacement for an earlier one that is now in the care of the Norwegian Maritime Museum.  Although I can find nothing on the web to indicate that this light is equipped with a fog signal, it is very clear from the photograph below that at least two "loudspeakers" are mounted on the lantern roof and one can only guess at their purpose.

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