how fast is ok.

pandos

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Heres a quicky. (I know about waterline length and formulae etc.)

In a 1980 Halberg Rassey 352 (Heavy cruiser) with 13 to 15 knots of apparent wind about 45 degrees off the starboard bow. into 1 knot of tide.

is 5.5 to 6 knots on the gps SOG good,bad, or so so.

thanks is advance.
 

alan

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You could try looking at the HR site they have very good diagrams for their boats (not sure of the technical name, but they are round and show velocity v wind speed for various wind angles); that should give you a good idea.

Alan.
 

shmoo

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If I understand you correctly thats about 6.5 to 7 knots through the water. About half the speed of the wind. Somewhere between good and very good, I'd say.
 

tangofour

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[ QUOTE ]
You could try looking at the HR site they have very good diagrams for their boats (not sure of the technical name, but they are round and show velocity v wind speed for various wind angles); that should give you a good idea.

Alan.

[/ QUOTE ]

Polar diagram
 

shmoo

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I must say that this has always been one of things I wanted to know but was frightened to ask!

It must have been 18-19kt apparent wind I would guess. Out of interest, what sail configuration did you have on?
 

philduff

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Your looking for the polar diagrams (or polars).
Converting your apparent to true winds, I make it something like 10.5 knots TWS at about 72 degrees TWA.
So 6.5 - 7 knots is still pretty respectable for a heavy boat.
Actually, it's pretty much bang on the polars for my Elan, and that weighs a lot less!
 
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