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Germany 2010

Germany vacation April 1st through 23rd 2010. The trip was extended by the icelandic volcano by a few days. We went to Oldenburg, Bad Zwischenahn, Hamburg, Laboe, Kiel, Lübeck, Munich, Walsrode, Bremerhaven and Groningen in the Netherlands.

2010 April 1 2 3 5 6 7 8 9 10 13 15 16 17 18 20 22

Aquarium (37) Bad Zwischenahn (41) Botanical Garden (55) Bremerhaven (240) Concentration Camp (108) Dachau (149) Easter (37) Erica (17) Flowers (75) Germany (2943) Göttingen (169) Groningen (165) Hamburg (649) Hunte (59) Kiel (35) Laboe (230) Lewin (1) Lübeck (343) Martinikerk (75) Miniature Wonderland (269) Munich (335) Nova (1) Oldenburg (123) Oma's Anniversary (2) Rabea (4) Rita (4) Ruben (1) Smart (1) St. Nikolai (69) Submarines (322) Type VII (157) Type XXI (161) U 2540 (161) U 995 (157) Walsrode (767) Zoo (947)

All

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Engine telegraph.
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Engine telegraph.
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Fuel consumption container. Contains 610 liters each.
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Electric engine room.
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In the electric engine room.
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In the electric engine room.
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Electric Machines From originally two electric machines (main traction motors) only one still exists (opposite the exit). These machines were developed by Siemens under the code word "Hertha" (christian name of the director's secretary) using their experience in large train engines. It is a 10 pole, separately excited shunt-wound motor with auxiliary series winding, interpole winding and compensating winding arranged as a double-unit engine (2 rotors on each shaft). The machines have a weight of 10330 kg each. Two ventilation fans each are fixed on the main traction motors. These are connected to the air coolers in the bilge and provide for heat evacuation. Under test stand conditions the main traction motors attained an output of 1840 kW for one hour at a voltage of 360 V and current input of 5500 A. Gear reduction of main traction motors was made by a large toothed-wheel gearing installed under the control platforms. For silent routine purpose two so-called silent motors are still existing, which were connected with one shaft each through a multiple V-belt drive. (Shown on the right side of exit stairs). These electric motors were developed by Siemens, too. The externally excited 8-pole shunt motors can be energized with 120 V or 360 V. At 360 V and current input of 256 A they attain an output of 83 kW.
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Inside the electric machine room.
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Electric motor.
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Electric motor.
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The starter for the alternative cooling water pump.
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Stern Room Before leaving the boat you can visit the stern room. Right hand next to the bulkhead door a depth bilge pump is installed, at the left there is a second W.C. (only to W.C. for 58 men crew!). Behind that you will see the so-called Boldsluice, a small torpedo tube for pyrotechnical signal ammunition as well as means of camouflage and dazzle. On the right side two large air bottles are placed. In the stern part you will see the emergency steering gear for the vertical rudder and rear diving plane. The round manhole being in the middle is the frogman sluice (decompression chamber). Through this sluice frogmen could start for operation.
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Gauges for the pressure of the alternative cooling water pump.
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Stern room.
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Frogman Sluice This sluice enabled the frogmen to leave the submarine down to 20 m depth of water. For this purpose they got from below into the chamber, which then was shut and flooded. After pressure equalizing the frogmen could leave the submarine through the escape tower in the hull and return on the say way. The sluice was also equipped with a speak-and-call system (voice transmitter and loudspeaker) which enabled a communication between ship's crew and frogmen.
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Frogmen sluice.
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