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Old 01-05-2007
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Sailing dog:

“I doubt anyone has the STIX ratings published, as much will depend on how you have the boat loaded and rigged, and where you have supplies and equipment stowed”.

Hellosailor:

"Can anyone point me to a URL listing various boats and their STIX ratings, so I can get an idea of which rates for what?"

PCP:

Sorry for taking so long in repling, but I don’t have been around this Forum.

The stix doesn’t change that much with the boat loaded, unless you load it over the Maximum load capacity. Anyway now they have to show the calculations for two STIXs, One in the minimum loading displacement and the other in the Max loading displacement. Normally the difference is not bigger than 1 point.

I will post my opinion about the STIX, as posted in another boatforum and some others more relevant as well as a short list with sailboat’s STIXs.


STIX:

STIX it is an evaluation for an existing Yacht about its stability and seaworthiness. It is intended not for professional, but for the common user, just to give him a correct idea of the seaworthiness of a given boat.

It is in that sense that RYA says that: “just the same way it is mandatory for the fuel consumption of all new cars to be published…that stability information should also be available to a buyer of a boat”.

STIX is only an easily understandable index (but found through a complicated calculation that takes into account a lot of different stability factors) that is in my opinion, the most sophisticated stability screening tool available.

Certainly very superior to the old Stability Indexes, that in many cases were very misleading and were not unified. I mean, you needed to take a look at several to have an idea of the boat, and many times a wrong idea, mainly with modern deep drafted bulbed yachts.

Don’t get me wrong, it is not a perfect tool, (only the best until now).

Personally I take a look at the STIX for having a general idea, but my evaluation is done independently by the analysis of the RM curve and done by a close examination of the boat (and I mean not a virtual one), with answers about the way it is built and the kind of materials that are used. Special incidence in the way the keel is fixed to the boat, about the rudder and about the hatches and all the “glass” surfaces and the way they are secured to the boat. Not that these are the only important points, but if special care is taken with these ones, there is a good possibility that all the others are well taken care of.

But for understanding a RM curve correctly you have to know a lot more.

STIX is just a number and its interpretation could not be simpler: The bigger, the better.


The RYA view about STIX:

“STIX is arguably the most sophisticated stability screening tool yet available. ….
Since June 1998 all new recreational boats sold in the EU have been required by law (the RCD*) to have undergone a stability assessment with the preferred method being the application of ISO 12217. “


http://www.rya.org.uk/NR/rdonlyres/43D83922-ED3E-4D5D-BBCF-6A14AA352EFA/0/StabilityIntro.pdf#search=%22stabilityintro%20pdf% 22

The Paul Miller view (D. Engr., from the Dept. of Naval Architecture of the United States Naval Academy:


“The Best we have…”


Bob Johnson view: (Naval architect, the Island Packets designer and the U.S. participant on the international work group of designers and naval architects responsible for developing STIX):

… STIX standard, I think, encompasses all critical stability factors in an analytical method that is based on established principles of naval architecture, sound methodology, and correlates well with real-world experience for real boats. No other single stability-assessment method, to my knowledge, is as comprehensive as STIX.

BENETEAU 50 AVS 109 STIX 41

BAVARIA 42 STIX 36

BENETEAU 50 STIX 41

BENETEAU 57 STIX 53

CATALINA 34 MK11 STIX 36

CATALINA 42 40 AVS 105

COMET 36 STIX 32.5 AVS 127

CONTESSA 32 STIX 33 AVS 155

CYCLADES 39 STIX 38 AVS 126

CYCLADES 43 STIX 36 AVS 121

DISCOVERY 55 STIX 37 AVS 122

ELAN 37 STIX 40 AVS 136

ELAN 40 STIX 37 AVS 128

ELAN 44 STIX AVS 124

ETAP 32 STIX 36 AVS 122

ETAP 34 STIX 37 AVS 123

ETAP 37 STIX 42 AVS 123

FIRST 36.7 STIX 34 AVS 126

FIRST 40.7 STIX 37 AVS 126

FIRST 42.7 STIX 35 AVS 118

FIRST 44.7 STIX 41 AVS 130

FIRST 47.7 STIX 46 AVS 123

FISHER 34 STIX 33 AVS 180

FISHER 37 STIX 43 AVS 180

HANSE 371 STIX 35 AVS 122

HANSE 411 STIX 33 AVS 128

HANSE 461 STIX 35

HANSE 531 STIX 39

HARLEY REFLEX 38 STIX 41 AVS 143

HOD 35 STIX 41 AVS 140

HUNTER CHANNEL 31 (single keel) STIX 32 AVS 130

HUNTER CHANNEL 31 (twin keel) STIX 33 AVS 130

HUNTER CHANNEL 323 STIX 35 AVS 149

ISLAND PACKET 350 STIX 49 AVS 141

ISLAND PACKET 370 STIX 43

ISLAND PACKET 380 STIX 55 AVS 136

ISLAND PACKET 420 STIX 59 AVS 136

ISLAND PACKET 440 STIX 48 AVS 133

ISLAND PACKET 445 STIX 53 AVS 141

ISLAND PACKET 485 STIX 66 AVS 143

J12O STIX 43 AVS 127

J100 STIX 37 AVS 126

J125 STIX 42 AVS 131

J133 STIX 46 AVS 130

J145 STIX 52 AVS 139

J160 STIX 57 AVS 118

J42 STIX 45

J46 STIX 48 AVS 127

MALO 45 STIX 62

MISTERY 35 STIX 32 AVS 156

NAJAD 380 STIX 43 AVS 128

OCEANIS 343 STIX 34 AVS 134

OCEANIS 351 STIX 35 AVS 125

OCEANIS 361 STIX 32 AVS 120

OCEANIS 36CC STIX 35 AVS 126

OCEANIS 373 STIX 36 AVS 132

OCEANIS 381 STIX 38 AVS 130

OCEANIS 393 STIX 43

OCEANIS 411 STIX 37 AVS 114

OCEANIS 423 STIX 38 AVS 119

OCEANIS 44CC STIX 34 AVS 110

OCEANIS 461 STIX 37 AVS 115

OCEANIS 473 STIX 48 AVS 119

OCEANIS 523 STIX 46 AVS 111

OCEANIS 42CC STIX 38 AVS 38

SEAQUEST 32 STIX 37 AVS 132

SEAQUEST 36 STIX 46 AVS 142

SEAQUEST PRIMA 38 STIX 52 AVS 131

SOUTHERLY 110 STIX 55 AVS 151

SOUTHERLY 115 STIX 51 AVS 150

SOUTHERLY 35RS STIX 37 AVS 160

SOUTHERLY 135 STIX 54 AVS 139

SUN ODYSSEY 37 STIX 33

SUN ODYSSEY 39i STIX 33

SUN ODYSSEY 40DS STIX 37/39

SUN ODYSSEY 40.3 STIX 36/38

SUN ODYSSEY 43/43DS STIX 44

SUN ODYSSEY 52.2 STIX 50

SUNFAST 35 STIX 33 AVS 127

SUNFAST 37 STIX 32

SWAN 40 STIX 36 AVS 112

SWAN 44 STIX 38 AVS 123

SWAN 45 STIX 57 AVS 134

SWAN 46 STIX 53 AVS 128

SWAN 48 CR/R STIX 49 AVS 135

SWAN 56 R STIX 50 AVS 127

SWAN 56 R/C STIX 55 AVS 124

SWAN 57 RS STIX 53 AVS 132

SWAN 60 R STIX 68 AVS 128

SWAN 60 R/C STIX 70 AVS 122

SWAN 601 STIX 84 AVS 153

SWAN 62 STIX 63 AVS 122

SWAN 68 R STIX 76 AVS 127

SWAN 70 STIX 82 AVS 133

SWAN 75 R STIX 81 AVS 121

SWAN 80 R STIX 80 AVS 138

SWAN 82 R STIX 88 AVS 127

VANCOUVER 28 STIX 36 AVS 170

VANCOUVER 34P STIX 35 AVS 166

VANCOUVER 34C STIX 36 AVS 139

WARRIOR 40 STIX 47 AVS 133

WESTERLY OCEAN 43 STIX 40 AVS 129

X YACHTS 37 STIX 35 AVS 123

X YACHTS 40 STIX 37 AVS 113

X YACHTS IMX 40 STIX 47 AVS 132

X YACHTS 43 STIX 40 AVS 119

X YACHT IMX 45 STIX 46 AVS 124

X YACHT 46 STIX 44 AVS 123

X YACHT 562 STIX 57 AVS 122

X YACHT 612 STIX 51 AVS 110

X YACHT 70 STIX 73 AVS 126

X YACHT 73 STIX 84 AVS 121

Last edited by PCP; 01-05-2007 at 11:26 AM.
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