Johnsson and Stfntvedt 



OBSERVED EXTENT OF CAVITATION 

 ESTIMATED II 



T/T "THORSHAMMER" 



OBSERVED 

 FULL SCALE 

 EROSION 



Figure 28 Calculated propeller cavitation 

 Ballast condition 

 RPM = 86, V g = 18. lkts, Z = 5, = 



T/T " NORSE KING" 

 <)=ANGULAR POSITION 



Figure 29 

 Loaded condition 

 full scale, 230 000 t. dw 

 RPM 84. 5, V s = 16. lkts, 

 Z = 5, p = 0° 



Figure 30 

 Ballast condition 

 full scale, 230 000 t. dw 

 RPM = 66, V s = 12. 5kts, 

 Z = 6, = 0° 



646 



