Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B63
SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
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B63H
MARINE PROPULSION OR STEERING
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1/00
Propulsive elements directly acting on water
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B63H1/12
with rotation axis substantially in propulsive direction
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B63H1/18
with means for diminishing cavitation, e.g. supercavitation
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B63H2001/185
Surfacing propellers, i.e. propellers specially adapted for operation at the water surface, with blades incompletely submerged, or piercing the water surface from above in the course of each revolution
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