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NOT TO SCALE |
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My rather clumsy drawing to show you
the relevant approximate distances in an 'A' Class boat. |
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A = |
Periscope depth from KEEL
to Top of Fin |
55 feet. |
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Radio HF/MF aerial |
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B = |
Top of fin to top of
raised periscope approx 15 feet |
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C = |
Distance above sea level
1 foot depending on weather of course - have to see but not |
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be seen! |
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D = |
Distance below sea level
of VLF receiving aerial approx 15 foot. See Note below. |
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C |
E = |
Overall APPROXIMATE
distance = 70 feet |
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Insulator |
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B |
Note: Rugby can be
received with aerial 22 foot below |
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surface at a range of
2000 miles. |
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| SEA
LEVEL |
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D |
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FORE AND AFT WOUND LOOP |
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Aerial mast with fairings |
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PORT AND STARBOARD |
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A |
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Periscope |
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WOUND LOOP |
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E |
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FIN |
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Skipper |
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Control room deck level |
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Depth of well same as height of
scope |
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Periscope well when 'scope is fully
lowered |
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above top of conning tower fin |
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