F37 Performance (Again)

[Coley]

Hi All, There was a recent post regarding F37 performance figures. Some of the replies concerned the KMD44's and I wondered what sort of revs would you expect to be cruising at 20-22knts? Also does any body have any experience regarding how badly this unit is affected by hot weather and sea temperatures? We need 3,300-3,400rpm to cruise at 20knts in a steady sea, fully loaded and with a fairly clean prop,shaft and hull.
Thanks. Coley

 

[Nick_H]

General concensus seems to be that you lose 1-2 knots between UK summer temp. (say 20 degs C) and Med summer temp (say 30 degs C).