When it comes to boat velocity prediction, the “One Size Fits All” concept does not work.

Avalon VPP is able to calculate precise velocity predictions for your boat. It takes into consideration your boat precise characteristics (additional displacement, propellor type, sail type, etc …) as well as your sailings habits (maximum healing, number of crew, etc.…). Another advantage of using polars calculated with Avalon VPP is that you will then get the forecasted healing and reefing for every route point.

The best weather router on a tablet ?

Avalon VPP Video Tutorial

  • This system is a real VPP, based on the equilibrium of aerodynamical and hydraulic forces for a pre defined set of TWS (True Wind Speed) and TWA (True WInd Angle).
  • Given the complexity of those calculations, it make take up to 30 seconds to produce a set of VPPs. This may increase in case of strong demand. If this happens, we will improve our process to calculate the polars.
  • There are about 250 pre-loaded boats that can be used as models. If you do not find your boat in this list, you can pick any other one, close to yours and then change the data and save it as your boat.
  • If you do not know the exact data for some fields, you can click on the related « default »
    button » and the field will be set to a defaulted value.
    Most of the missing but required information can be measured during the yearly
    careening of your boat (mostly for keel and rudder measurements).
  • As this is the first version of the system, it is possible that the system cannot find some results. If this happens, please notify us and we will investigate why the problem occured.

There are about 450 boat polars (VPP) in the database of polars of Avalon Router.

Those polars are provided free of charge to Avalon Navigation users who are free to use them or not. They are not guaranteed.

Centurion 42 (Wauquiez)
Elan 45 (Elan)
Ovni 445 (Alubat)
Oceanis 43 (Beneteau)
Elan 45 (Elan Yachts)
Sun Odyssey 34.2 GTE (Jeanneau)
Gladiateur (Wauquiez)
JPK 9.60 (JPK)
X 442 (X-Yachts)
Dufour 335 GL (Dufour Yachts)
First 47.7 (Beneteau)
Bavaria 32 GTE (Bavaria)
Dufour 325 (Dufour Yachts)
JPK 1010 (JPK)
Feeling 1040 GTE (Kirie)
Tahiti Ketch
RM 1270 biquille (RM Yachts)
LM 27 (LM Glasfiber)
First 27 GTE (Beneteau)
Harmony 38 (Harmony Yachting)
Beneteau 50 (Beneteau)
Allures 44 (Allures Yachting)
Sprint 95 (Archambault)
Sun Odyssey 379 PTE (Jeanneau)
HR 36 (Hallberg Rassy)
Hanse 430 (Hanse)
HR 36 (Hallberg Rassy)
Dufour 445 GL (Dufour)
First 45F5 (Beneteau)
Aquila PTE (Jeanneau)
OVNI 395 (Alubat)
Dufour 405 GL GTE (Dufour)
JOD 35 (Jeanneau)
Capt 11 (Meta)
Trident 80 (Neptune)
Dufour 34 E Perf (Dufour)
Imoca 60 VR
First 40.5 S GTE (Beneteau)
Sparkman Stephens 34 (Aquafibre)
Sun Odyssey 40 DS (Jeanneau)
J  92 (J Composites)
Oceanis 393 (Beneteau)
Amphitrite 45 MS (Wauquiez)
Sun Odyssey 469 (Jeanneau
Sun Odyssey 349 QR (Jeanneau)
Dufour 375 GL (Dufour)
Gib’sea 372 PTE (Gibert Marine)
Transpac 5
Feeling 32 DI (Kirie)
OVNI 385 (Alubat)OVNI 43 (Alubat)
Bowman 36 Ketch (Bowman Yachts
JPK 110 (JPK Composites)
X 34 (X-Yachts)
Feeling 32 DI (Kirie)
CNB 86 (Chantier Naval de Bordeaux)
Pogo 6.50 (Structures)
Salona 33 (Salona Yachts
Sun Odyssey 35 Q (Jeanneau)
Sun Odyssey 35 DER (Jeanneau)
Shipman 50 (Shipman Yachts)
Sun Odyssey 362 Petit Mat (Jeanneau)
Oceanis 423 (Beneteau)
CC 27 / Trapper 500
Etap 38I (Etap)
Dufour 36 Classic ‘Dufour)
Malango 888 (IDB Marine)
First 40.7 (Beneteau
Hobie 33(Hobie Cat)
Feeling 346 (Kirie)
Selection 37 (Jeanneau)
Espace 1000 (Jeanneau)
Aquila GTE (Jeanneau)
Bavaria 38 PTE (Bavaria)
Berwick (Westerly)
Biloup 10 (Wrighton)
Centaur (Westerly)
Contessa 35 (Rogers)
Dehler 34 GTE (Dehler)
Dufour 31 GTE (Dufour)
Dufour 34 (Dufour)
Dufour 38 Classic (Dufour)
Dufour 382 GL (Dufour)
Edel 4 (Edel)
Elan 333 (Elan)
Elan 340 (Elan Yachts
Elan 450 (Elan Yachts)
Espace 1100 (Jeanneau)
Feeling 1090 (Kirie)
First 18 QR (Beneteau)
First 21.7 (Beneteau)
First 25.7 (Beneteau)
First 325 GTE (Beneteau)
First 325 PTE (Beneteau)
Fugue 11 DL (Sapo)
Grand Soleil 43 BC Cruiser (Del Pardo)
Hanse 415 (Hanse)
Hood 52 (Hood)
Jouet 920 MK2 (Yachting France)
Jouet 1040 (Yachting France)
Love Love (Jeanneau)
MG 335 (Northshore Yachts)
Microsail (Jeanneau)
Moody 425 (Marine Projects)
Moody 376 (Marine Projects)
Oceanis 350 (Beneteau)
Oceanis 35 (Beneteau)
Oceanis 343 (Beneteau)
Selection 37 (Jeanneau)
Sigma 38 (Sigma Yachts)
Selection 37 (Jeanneau)
Sun Light 30 (Jeanneau)
Sun Odyssey 33.1 (Jeanneau)
Sun Odyssey 36 PTE (Jeanneau)
Sun Odyssey 43 (Jeanneau)
Sun Odyssey 44i (Jeanneau)
Sun Odyssey 45.2 (Jeanneau)
Vancouver 27 (Northshore Yachts)
X43 (X-Yachts)
A 27 (Archambault)
A 31 (Archambault)
A 35 (Archambault)
A 40 RC (Archambault)
Achilles 9m (Butler Mouldings)
Aloa 27 (Aloa)
Amel 55 (Amel)
Amel 64 (Amel)
Bahia (Jeanneau)
Baroudeur MK2 (Beneteau)
Bavaria 32 GTE (Bavaria)
Bavaria 34 (Bavaria)
Bavaria 35 Match (Bavaria)
Bavaria 39 (Bavaria)
Bavaria 44 GTE (Bavaria)
Biloup 30 (Wrighton)
Brin de Folie (Jeanneau)
Centurion 32 (Wauquiez)
Challenger Bravo (CNA)
Challenger Horizon (CNA)
Challenger Micro (CNA)
Comet 36 (Comar)
Contessa 32 (Rodgers)
Conway 36 Sloop (Westerly)
Conway 36 Ketch (Westerly)
Dehler 29 (Dehler)
Dehler 36 CWS (Dehler)
Dehler 39 (Dehler)
Dehler 35SQ (Dehler)
Dufour 1800 (Dufour)
Dufour 24 (Dufour)
Dufour 27 (Dufour)
Dufour 2800 GTE (Dufour)
Dufour 310 GL (Dufour)
Dufour 32 Classic GTE (Dufour)
Dufour 380 GL (Dufour)
Dufour 425 GL (Dufour)
Dufour 450 GL (Dufour)
Dufour 465 GL (Dufour)
Edel 3 (Edel)
Edel 600 (Edel)
Etap 20 (Etap)
Etap 28I (Etap)
Etap 32 (Etap)
Fango (Amel)
Fantasia Q (Jeanneau)
Feeling 326 GTE (Kirie)
First Class 7.5 (Beneteau)
First Class 8 (Beneteau)
First Class 10 (Beneteau)
First 210 (Beneteau)
First 25 (Beneteau)
First 25.7 (Beneteau)
First 29 (Beneteau)
First 285 GTE (Beneteau)
First 30 Mauric (Beneteau)
First 305 GTE (Beneteau)
First 31.7 (Beneteau)
First 345 GTE (Beneteau)
First 45 (Beneteau)
Flirt (Jeanneau)
Flush Poker (Gibert Marine)
Gib’sea 24 (Gibert Marine)
Gib’sea 28 DL (Gibert Marine)
Gib’sea 76 (Gibert Marine)
Gib’sea 80 plus (Gibert Marine)
Gib’sea 84 (Gibert Marine)
Gib’sea 96 (Gibert Marine)
Gibsea 105 Plus (Gibert Marine)
Gibsea 105 (Gibert Marine)
Gib’sea 302 (Gibert Marine)
Grand Surprise (Archambault)
H385 (Hanse)
HR 372 (Hallberg Rassy)
HR 382 (Halberg Rassy)
Hunter 25 (Hunter)
Hunter 26 (Hunter)
Hustler 30 (Tyler Yachts)
Hustler 30 (Tyler Boat)
Jouet 24 (Yachting France)
Kelt 707 Q (Kelt Marine)
Kelt 760 (Kelt)
Kelt 760 DL (Kelt Marine)
Kelt 8m GTE (Kelt Marine)
Kelt 9m (Kelt Marine)
Konsort (Westerly)
Legend 33 (Marlow Hunter)
Lagoon 400 (Lagoon)
LM 30 (LM Glasfiber)
Mallard 9M  (Mallard)
Maramu (Amel)
Moody 33S (Marine Projects)
Moody 29 (Marine Projects)
Moody S38 (Marine Projects)
Moody 346 (Marine Projects)
Mystery 35 (Cornish Crabbers)
NE Quid Nimis (Soubise Plaisance)
Oceanis 281 (Beneteau)
Oceanis 31 GTE (Beneteau)
Oceanis 323 (Beneteau)
Oceanis 34 (Beneteau)
Oceanis 361 (Beneteau)
Oceanis 37 GTE (Beneteau)
Oceanis 38 (Beneteau)
Oceanis 41 (Beneteau)
Oceanis 411 Clipper (Beneteau)
Oceanis 45 (Beneteau)
Oceanis 46 (Beneteau)
Oceanis 461 (Beneteau)
Ovni 28 (Alubat)
Ovni 30 (Alubat)
Ovni 33 (Alubat)
Pearson 33-2 (Pearson)
Parker 275 (Parker Yachts)
Rush PTE (Jeanneau)
Romanee (Pouvreau)
Rustler 36 (Rustler Yachts)
Sangria (Jeanneau)
Sigma 362 (Sigma Yachts)
Scanmar 33
Snapdragon 24 (Thames Marine)
Sauvignon (Aubin)
Starlight 35 (Sadler Yachts)
Sun Dance 36 GTE (Jeanneau)
Sun Fast 20 (Jeanneau)
Sun Fast 32 GTE (Jeanneau)
Sun Liberty (Jeanneau)
Sun Light 30 (Jeanneau)
Sun Odyssey 36 GTE (Jeanneau)
Sun Odyssey 33 Q (Jeanneau)
Sun Odyssey 35 Deriveur (Jeanneau)
Sun Odyssey 39i (Jeanneau)
Sun Shine 38 (Jeanneau)
Sun Shine 38 Q (Jeanneau)
Sun Shine 36 Q (Jeanneau)
Sun Rise 34 Q (Jeanneau)
Symphonie Q (Jeanneau)
Storm (Westerly)
Surprise (Archambault)
Southerly 47 (Southerly)
Super Maramu (Amel)
Sharki (Amel)
Surprise (Archambault)
Trapper 400
Vega 27 (Albin Marine)
Voyage 12.5 (Jeanneau)
X 332 ( X Yachts)
X37 (X-Yachts)

Etc ….

If you want to use your own polar file, you need to:

Create a table like the one below using Excel or another spreadsheet.:

TWS (True Wind Speed) are in columns and TWA (True WInd ANgle) are in rows. You can create as many rows and columns as needed.

TWA/TWS 4 8 12 16 20

Once filled in, save your table as “txt” with tab as separator.
Once done, modify your file extension from “.txt” to “.pol”.
You can then load your own polar file using the simple process described in the documentation in the chapter “using your own polar file”.