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CONVERSION ADVANTAGES OF AN OPEN PROPELLER INTO A PROPELLER-NOZZLE SYSTEM |
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From the desktop of Ramses Herrera |
For such effect, Ka-Speed blades that adjust to the nozzle replace the blades of the open CPP. The nucleus and mechanism remain intact, only the blades are replaced and the nozzle is installed. | |
The pictures enclosed show a conversion recently done in Chile where a big amount of fishing boats have Controllable Pitch Propellers. The boat’s LOA is 153’ with a 2000 hp motor. Picture 1 shows the blade of a 102”D open propeller. Picture 2 shows us the new Ka-Speed design for 90”D. In picture 3 you can see the Blades-Nozzle already installed. This conversion was made under the supervision and approval of Bureau Veritas. |
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4 shows another conversion made to a fishing boat of 158’ with 2400 hp of
a 116”D Rice Speed Nozzle and Ka-Speed Propeller System where the CPP was
126”D. This conversion was made under the approval of Germanisher Lloyd’s.
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