Wilhelmshaven sea lock
| Wilhelmshaven sea lock | ||
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 Aerial view of the Wilhelmshaven sea lock from the south |
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| location | ||
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| Coordinates | 53 ° 31 '44 " N , 8 ° 9' 32" E | |
| Country: | Lower Saxony , Germany | |
| Place: | Wilhelmshaven | |
| Waters: | Inner jade - Wilhelmshaven harbors | |
| Data | ||
| Owner: | German Navy | |
| Operator: | WSA Wilhelmshaven | |
| Responsible WSA : | Wilhelmshaven | |
| Start of planning: | 1917 | |
| Construction time: | 1936-1945 and 1957-1964 | |
| Start of operation: | 1964 | |
| lock | ||
| Type: | Sea lock | |
| Is controlled by: | WSA Wilhelmshaven | |
| Usable length: | 390.00 m | |
| Usable width: | 60.00 m | |
| Average height of fall : |
Depending on the tide (depending on the water level in the jade) m | |
| Upper gate: | Steel sliding gate | |
| Lower gate: | Steel sliding gate | |
| Others | ||
The Wilhelmshaven sea lock in Wilhelmshaven - also called “4. Entrance “- is a double lock and was formerly the second largest lock in the world. It connects the Inner Jade via the New Vorhafen with the inner port areas in Wilhelmshaven and the Ems-Jade Canal . The system regulates the water level in the entire inner port area. The lock system is also part of the dike line and thus serves to protect against flooding.
Four self-floating steel sliding gates serve as lock gates, each of which is mounted on an undercarriage and an uppercarriage that roll on rails.
history
Entrances to the inner port areas in Wilhelmshaven and the Ems-Jade Canal have existed since the end of the 19th century. By the beginning of the 20th century, three entrances were built, but they soon no longer met the requirements (for details see under Wilhelmshaven harbors ). As early as 1917 there were initial plans for the construction of the 4th entrance with the sea lock.
In 1936 the construction of the sea lock began. By the end of the Second World War , only one chamber of the double lock could be completed. At that time, the lock was named "Raeder lock" after the Grand Admiral Erich Raeder, who was in office at the time . Raeder officially inaugurated the lock chamber on November 7, 1942 with the passage of the light cruiser Emden . The complete lock system could no longer be put into operation due to the war. The lock system was dismantled and partially blown up by the victorious powers between 1947 and 1949 .
In connection with the stationing of units of the Federal Navy to be founded in Wilhelmshaven, considerations were made in 1955 to rebuild the lock system. Between 1957 and 1964 the double lock was rebuilt with reasonable effort, as the foundations of the lock system had not been damaged by the Allied explosions.
The sea lock as well as the "new outer port" in front of it are facilities of the naval base Heppenser Groden of the German Navy . The operation and maintenance of the sea lock has been entrusted to the Federal Waterways and Shipping Administration . The Wilhelmshaven Waterways and Shipping Office performs the task on site .
Due to repair work, both lock chambers were closed from October 8, 2018. The eastern chamber was released on October 25th.
Dimensions
The two chambers of the sea lock have the following dimensions:
| length | 390 meters |
| Width of the chambers | 60 meters |
| Passage width (between the fenders) | 57 meters |
| Threshold depth | 13.65 meters (below sea level ) |
| Water depth over jam | 14.75 meters (below mean port water level) 11.45 meters (below SKN ) |
| Chamber wall height | 19.10 meters |
| Quay height | 3.45 meters (above sea level) |
The lock gates are each 60 meters long, 20 meters high and 10 meters wide. They weigh 1700 tons.
The lock island between the east and west chambers is 90 meters wide. Among other things, the lock service building is located on it.
Web links
Individual evidence
- ↑ a b c d e Seeschleuse , website of the waterways and shipping office Wilhelmshaven. Retrieved September 9, 2011
- ↑ Impressions of the 4th entrance / Raederschleuse in Wilhelmshaven , Bunker-WHV.de. Retrieved February 19, 2014.
- ↑ Michael Halama: Companies uncoupled from shipping , Nordwest-Zeitung , October 4, 2018. Accessed October 17, 2018.
- ↑ Seeschleuse in Wilhelmshaven partially back in operation , Anzeiger für Harlingerland , October 25, 2018. Accessed on October 28, 2018.