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Report on Torpedo Delivery by Ship 33 to UA. |
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The torpedoes were delivered in a sea area with a medium-long, low swell. Slight rolling of the ship and stronger movements of the U-boat could not be avoided. | ||||
Transport of the torpedoes on Ship 33 from the storage room on the 2nd lower deck (1st mine room) through the aircraft shaft to the upper deck did not cause any difficulties worth mentioning. | ||||
The width of the space in the aircraft shaft between the furthest parts of the aircraft and the wall of the shaft was approximately 1 meter. The torpedo had to be hoisted 5 meters into this room. | ||||
On the wall of the aircraft shaft, there are two vertical iron rails, to which the head and tail of the torpedo were held with a short looped line. In addition, from the upper deck, head and tail lines and a line around the cable on which the torpedo is hanging were held stiff by several men, so that sideways movement of the torpedo was almost impossible from the outset. However, multiple light impacts of the torpedo on the vertical iron rails could not be avoided. The space between the forward-facing part of the torpedo and the vertical guide rail for the aircraft shaft was also very small. So when the sensitive tail piece was pointed in advance, it was protected by foam-filled mats. The impacts on the vertical guide rails was of no importance as the rods are very elastic | ||||
On deck, the torpedo was held in place by double head and tail lines. It was then laid chocked onto T.M.B. transport trolley and made ready there for delivery. | ||||
A first attempt at delivery failed: the boat was supposed to come alongside, and the torpedo was to be laid directly onto the loading tray of the U-boat by the ship's cargo boom. The cargo boom was swung out as far as possible. In addition, an attempt was made to hold the torpedo horizontally with two 5-6 meter long bamboo poles and to prevent it from swinging. Two | ||||
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Click the flag to view the above page from the original German KTB |
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bamboo poles broke. In addition, the pendulum tendency of the torpedo and the up and down movements of the U-boat were so strong that it seemed impossible to place the torpedo on the small loading tray of the boat by the very hard working electric winch of the ship without damaging the torpedo or the boat. The attempt was given up. | ||
The following conclusions were now drawn: | ||
1) It was not possible to get the boat alongside without the risk of damaging the diving planes. | ||
2) The torpedo must be brought alongside the boat. | ||
3) A installation must be created by which the torpedo can be taken into the boat. | ||
There were no difficulties with point 2) as a large inflatable raft was at hand. This would not have been possible with another boat (wood or iron) because of the risk of smashing against the side of the U-boat or Ship 33. In addition, the torpedo would then have been exposed to hard blows during lowering and heaving. | ||
The technical staff of the command now built a takeover davit that fit into the fixed mounts on the deck of the submarine. On the first try it bent, the material turned out to be too weak. | ||
The ships' Mine Officer, Oberleutnant (W) S c h m i d t , then constructed a stable takeover device from mine rails and torpedo rails. (Photos in the Enclosure). | ||
During the trial with this system, the torpedo was protected on the head and tail section by foam filled mats and in the middle by a water hose that was wrapped in a spiral around it and inflated with air. As in the first attempt, it was now held in the inflatable boat by head and tail lines and bamboo poles. That was much easier now, since the offset of the cargo boom only needed to be small. A flat fender was also included on the head and tail pieces. The torpedo was held briefly over the rubber boat until a sea lifted the boat. Then it was quickly lowered and the torpedo settled softly into the inflatable boat. There it was lashed with cords. A long line was extended through a smaller rubber dinghy to the U-boat, from where the raft with the torpedo was hauled alongside. The outboard hull of the U-boat was protected by 5 coconut sports mats, as was the | ||
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outer support of the raising mechanism. As it was raised, the torpedo lay down gently against the U-boat without any risk of damage. | ||
For more see the report from U.A. | ||
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Leutnant zur See and Torpedo Officer | ||
Seen ! | ||
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Kapitän zur See and Kommandant. | ||
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