RESTLESS:  Tayana 42 Cutter
                      31,000#,  33 ft waterline
                               double ender
                        Perkins 4-108 (49 HP)

        RPM     Old (16X13 3-blade)    AUTOPROP (18 1/4)                             
                    (29,500#- displacement during test)  (31,000#)
	   850                                                  3.4 Kts
         1300                ----                        5.0
          1400                  ----                           5.2
         1500                  4.8                           5.4
         1600                  ----                           5.6
         1700                  5.5 est                      5.9
         1800                  5.8                           6.3
         1900                  6.1                           6.4
         2000                  6.3                           6.6
         2100                  6.5                           6.8 
         2200                  6.8                           7.0
         2300                  6.9                           7.2
         2400                  7.2                           7.4 
         2600                  7.6                           7.8  

       Two Tayana 42’s:  5.8 Kts at 2300 RPM
       (took another in tow - 92° day, 85° water temp)
        Engine temp rose only 4° - towed for an hour.

   Note: RESTLESS had original factory prop repitched 3 times from 18X10, to 17 1/2X11, to 17X12, & finally 16X13.  Max speeds with 18X10 were 6.3 to 6.5 Kts.  Cruise speed was 5.8 at around 2000 RPM.
                                            CDR Wayne Strausbaugh, USN, retired