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DK5390C
(en)
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Device by submarine boats for automatic regulation of the water ballast according to the density of the water.
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DK6179C
(en)
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Arrangement of water ballast tanks in submarines.
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CH30836A
(en)
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Water weir for automatic regulation of the water level
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DK5951C
(en)
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Arrangement by submarines to compensate for the weight of the postponed torpedoes.
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FR342456A
(en)
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Submersible boat
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DK2590C
(en)
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Device for Soldering Depths of Water.
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FR337535A
(en)
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Altiscope for underwater boats
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DK5698C
(en)
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Device for regulating the ballast in submarines.
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FR335212A
(en)
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Unsinkable whaling boat
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DK6496C
(en)
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Device for Preventing Foam Formation by Rotating Clear Vessels.
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DK5493C
(en)
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Automatic control device for the diving rudders at submarines.
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DK17584C
(en)
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Device for lifting pairs of swim buoys placed by submerged submarines.
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DK6123C
(en)
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Device by Ships.
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CH28481A
(en)
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Installation for storing water
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DK6984C
(en)
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Device for submarines.
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FR333587A
(en)
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Improvements to underwater torpedo boats
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FR355959A
(en)
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Telescopic chimneys for submarine boats
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DK6841C
(en)
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Water tap.
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FR348504A
(en)
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Water level indicator-alarm for boilers
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DK6887C
(en)
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Devices in apparatus for transmitting sound signals through water.
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FR360793A
(en)
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Goggles for submarines
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FR342734A
(en)
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Hunting tank
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FR344483A
(en)
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Hunting tank
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FR350029A
(en)
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Hunting tank
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DK6052C
(en)
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Launch device for torpedoes at underwater torpedo boats.
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