| Designation | FuMo27 | ||||||||
| Service onboad | Continuous |
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| Designation | FuMo25 | ||||||||
| Date of Service | August 1944 to destruction |
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| Designation | FuMo26 | ||||||||
| Date of Service | September 1942 to destruction |
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| Designation | FuMB4 "Sumatra" | ||||||||
| Date of Service | February 1942 to destruction |
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 Torpedo director (forward) and night artillery director.
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 Same instruments, port side, Baltic paint scheme.
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 ZAG light flak directors
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 Infared night vision
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