We are now using the boat measurement system created by the Sound Rowers We've started with the boat measurements on the Sound Rowers page and added east coast boats. If there is a discrepency between the Sound Rowers classifications and our listings please let us know and we will adjust our numbers to match the Sound Rowers classes.

One significant difference between the Blackburn categories and the Sound Rowers is the Cape Ann Rowing club has moved the ratio for High Performance Kayaks slightly higher. The Sound Rowers based their metrics on the fastest readily available sea kayak in about 2004, a Seda Glider. The Cape Ann Rowing club with the increasing number of High Performance Kayaks available felt that moving the metric higher for the Fast Sea Kayak class was appropriate. As such the length to width ration of the top of the FSK class for The sound rowers is 10.99 but it's 11.49 for the Cape Ann Rowing Club. This moves 2 boats on the sound rowers page The JKK U2 and the Twogood Pheonix. Not listed on the Sound Rowers page is the Epic 18x. These 3 boats all move from HPK to FSK. The Necky Arluk I is listed as having an 11.5 ratio. We will need to jig one of these boats to see which side of the 11.5 margin this boat falls. Kayak classes are based on waterline length to width ratio. Those boats with a L:W ratio less than 9.25:1 are in the Sea Kayak class (SK); between 9.25:1 to 11.49:1 are in the Fast Sea Kayak class (FSK); greater than 10.99:1 are in the High Performance Kayak class (HPK). Below is a list of boats by manufacturer with their L:W ratio and respective class.

A table of length to width ratios
Data compiled by Tom Cartmill (last update 5/22/2006)
Manufacturer Model L:W ratio Class
Action Fish Empire Fly 7.9 SK
AquaDynamic Thelon 17 8.2 SK
Aquaterra Chinook 7.9 SK
Aquaterra Scimitar 8.4 SK
Aquaterra Sea Lion 8.3 SK
Azul Kayaks Aspen 8.8 SK
Azul Kayaks Sultan 9.4 FSK
Bergans Ally Folding Sea Touring Kayak 10.1 FSK
Bear Mountain Boat Ship Enterprise 8.3 SK
Boreal Designs Alvik 8.3 SK
Boreal Designs Ellesmere 9 SK
Boreal Designs Fjord 8.3 SK
Boreal Designs Inukshuk 8.1 SK
Boreal Designs Muktuk 8.2 SK
Boreal Designs Narwhal 8.2 SK
Chesapeake Lt. Craft Chesapeake 16 8.6 SK
Chesapeake Lt. Craft Chesapeake 17 8.8 SK
Chesapeake Lt. Craft Shearwater 17 8.8 SK
Cobra Cobra Expedition 8.5 SK
Current Designs Altura 6.2 SK
Current Designs Andromeda 8.3 SK
Current Designs Breeze 6.5 SK
Current Designs Caribou 8.5 SK
Current Designs Expedition 9.7 FSK
Current Designs Extreme 9.5 FSK
Current Designs Freedom 9.8 FSK
Current Designs Gulfstream 8.5 SK
Current Designs Kestrel 140 6.2 SK
Current Designs Pachena 6.9 SK
Current Designs Piceses 8.6 SK
Current Designs Raven 7.3 SK
Current Designs Slipstream 8.1 SK
Current Designs Solstice GT & ST 8.5 SK
Current Designs Solstice SS 9 SK
Current Designs Speedster   HPK
Current Designs Squamish 7.3 SK
Current Designs Storm 7.9 SK
Current Designs Stratus 18 9.8 FSK
Current Designs Vision 130 6.5 SK
Current Designs Vision 140 7.0 SK
Current Designs Vision 150 7.3 SK
Current Designs Whistler 7.0 SK
Dagger Baja 8.4 SK
Dagger Cortez 16.5 8.3 SK
Dagger Magellen 8.1 SK
Dagger Meridian 7.8 SK
Dagger Seeker 8.2 SK
Dagger Sitka 9.3 FSK
Destiny Aquila <8.5 SK
Destiny Deception 8.8 SK
Destiny Defiance 8.7 SK
Destiny Kiska <8.8 SK
Dirigo Dirigo <8.5 SK
Dragonworks Islander 8.9 SK
Easy Rider Dolphin 7.7 SK
Easy Rider Eskimo 15 <8.4 SK
Easy Rider Eskimo 16 <8.4 SK
Easy Rider Eskimo 17 8.4 SK
Easy Rider Eskimo 18.6 8.7 SK
Easy Rider Harpoon 19 10.5 FSK
Easy Rider Sea Hawk 8.4 SK
Eddyline Calypso 9 SK
Eddyline Falcon (16') 8.7 SK
Eddyline Falcon (18') 9.7 FSK
Eddyline Fathom 8.5 SK
Eddyline Heron 10.7 FSK
Eddyline Merlin <8.0 SK
Eddyline Nighthawk 8.5 SK
Eddyline Orca 8.2 SK
Eddyline Raven 8.3 SK
Eddyline Sea Star 9.7 FSK
Eddyline Skimmer <7.0 SK
Eddyline Skylark 5.3 SK
Eddyline Wind Dancer 8.5 SK
Eddyline Zephyr 8 SK
Epic 18x 11.4 FSK
Epic 18x Sport 10.9 FSK
Epic Touring Cruiser 16 <8.8 SK
Epic Touring Endurance 18 10.5 FSK
Epic Recreational GP 6.1 SK
Epic V10 16.7 HPK
Epic V10 sport - HPK
Feathercraft K1 Expedition 8.1 SK
Feathercraft Khatsalano S 9 SK
Fenn Mako XT 13.13 HPK
Folbot Folding K any as single <8.0 SK
Folding Craft 500 EX 7.5 SK
Futura Carrera <13.7 HPK
Futura Futura <8.0 SK
Futura Futura II <12.3 HPK
Futura Futura TR <14.4 HPK
Georgn. Bay Folding Kayak any as single   SK
Heritage Expedition LP 8.4 SK
Heritage Nomad 8.2 SK
Hoby Cat Quest 5.5 SK
Hody Sport TK-1 10.9 FSK
HopOnTop HopOnTop 6.8 SK
Huki Huki S1-A   HPK
Huki Huki S1-X 15.5 HPK
Hurricane Sports Tampico 140L 7.1 - (not measured - based on overall length/width) SK
Hutchinson Design Baidarka Explorer 8.7 SK
Hutchinson Design Islander <9.0 SK
Hutchinson Design Umnak <8.4 SK
HydrTufLite Sea Runner 8.2 SK
HydrTufLite Venture <8.3 SK
Impex Kayak Currituck need to measure 17' by 22" probably SK
Impex Kayak Force Cat 4 9.7 FSK
Impex Kayak Force Category 5 9.15 SK
Innova Kayaks Seaker 1 6.3 SK
JKK Kayaks Supernova 11.8 HPK
JKK Kayaks Total Eclipse 11.8 HPK
JKK Kayaks U2 11.5 need to jig FSK?
Kayak Pro Jet 11.03 - need to measure based on guessed 17' waterline and 18.5" beam FSK
Kajak Sport Artisan Millenium 8.8 SK
Kajak Sport Avalon Viviane 9.9 FSK
Kajak Sport Infinity Active 7.3 SK
Kajak Sport Viking Expedition 8.4 SK
Kirton Kayaks Inuk 10.6 FSK
Kiwi Kayak any as single <7.0 SK
Klepper Folding Kayaks any as single <7.0 SK
Mad River Monarch 7.7 SK
Mariner Coaster 7.4 SK
Mariner Elan 8.4 SK
Mariner Escape 8.9 SK
Mariner Express 8.9 SK
Mariner Mariner 10.7 FSK
Mariner Mariner II 10.2 FSK
Mariner Mariner XL 8.8 SK
Mariner MAX 8.3 SK
Momentum Yacht Design Loki R 9.1 SK
Momentum Yacht Design Loki Sea Race 13.6 HPK
Mont Bell Ellsmere 350 8.5 SK
Natural Design Polaris 8.6 SK
Nautirad Greenlander 16 7.9 SK
Necky Alsek <7.0 SK
Necky Arluk I 11.5 need to jig FSK(?)
Necky Arluk II/1.8/1.9 9.9 FSK
Necky Arluk III 8.7 SK
Necky Arluk IV 7.3 SK
Necky Chatham 16 7.4 SK
Necky Eliza 8.1 SK
Necky Kyook <7.7 SK
Necky Looksha II 10.6 FSK
Necky Looksha IV <8.9 SK
Necky Looksha V 8.1 SK
Necky Nootka 7.7 SK
Necky Phantom 13 HPK
Necky Telsa <8.5 SK
Necky Tornak <8.5 SK
Necky Elaho 7.5 SK
Nelo FW 2000 14.5 HPK
Nigel Dennis Romany Explorer 8.2 SK
Nimbus Horizon <8.7 SK
Nimbus Lootas 8.3 SK
Nimbus Puffin 8.5 SK
Nimbus Solander 8.4 SK
Nimbus Sprint 10.3 FSK
Nimbus Zoom 9.23 SK
North Shore Calypso ?? need to measure 520 cm by 55 cm Probably SK
Novus Composites NC 15 <8.0 SK
Novus Composites NC 17 8.3 SK
Novus Composites NC 19 9.1 SK
NW Kayak Cadence 8.8 SK
NW Kayaks Discovery 8.9 SK
NW Kayak Esprit 8.7 SK
NW Kayaks Pursuit 8.9 SK
NW Kayak Sportee <8.0 SK
NW Kayak Synergy 8.3 SK
Ocean Kayak Manta 6.1 SK
Ocean Kayak Pro S1 109 4.8 SK
Ocean Kayak Scupper 7.5 SK
Ocean Kayak Scrambler <7.0 SK
Ocean Kayak Sprinter 10.4 FSK
Old Town Canoe Egret 7.8 SK
Old Town Canoe Millenium 8.8 SK
Old Town Canoe Nantucket 6.9 (length/width not measured) SK
P&H Bahiya 8.6 SK
P&H Capella 7.7 SK
P&H Iona <8.5 SK
P&H Orion <8.5 SK
P&H Quest 8.4 SK
P&H Sirius 8.5 SK
Pakboats Puffin Swift 6.8 SK
Perception Avatar 16 7.8 SK
Perception Carolina 7.9 SK
Perception Eclipse 8.6 SK
Perception Sonoma 13.5 6.8 SK
Perception Vizcaya 8.1 SK
Prijon Arctic Tern 14 6.8 SK
Prijon Barracuda 9.1 SK
Prijon Cabalara 6.5 SK
Prijon Kodiak 8.5 SK
Prijon Odysee 7.8 SK
Prijon Seayak 7.6 SK
Prijon Touryak 7.3 SK
Prijon Yukon Eskie 8.4 SK
Pt. 65º North K1 R 8.6 SK
Pt. 65º North K1 XP 10.0 FSK
Pt. 65º North K1 VR 8.9 SK
Pt. 65º North KIR 8.8 SK
Pt. 65º North X Lite 8.4 SK
PWS Avocet 8.6 SK
PWS Intrepid 8.3 SK
PWS Osprey 9.4 FSK
PWS Sea Otter 7.9 SK
PWS Seal 10.8 FSK
PWS Thunderbird 7.8 SK
PWS Widgeon 7.9 SK
Pygmy Arctic Tern 8.3 SK
Pygmy Arctic Tern 14 7 SK
Pygmy Coho 8.6 SK
Pygmy Goldeneye 8.5 SK
Pyranha Orca 6.8 SK
QFC Kayaks Q300 <8.8 SK
QFC Kayaks Q400 <8.8 SK
QFC Kayaks Q500x 8.8 SK
QFC Kayaks Q600x 9.7 FSK
QFC Kayaks Q700x 10.3 FSK
Rainforest Designs Kap Farvel 8.1 SK
Rainforest Designs Telkwa 8.3 SK
REI (?) Marlin (on top) 7.7 SK
Riot Kayak Tourlite 15 6.8 SK
Seafarer Solander 8.6 SK
Seafarer Sprint 10.4 FSK
Seavivor Folding Kayak Greenland Solo 9.8 FSK
Seaward Chilco 9.5 FSK
Seaward Discover Aurora 7.7 SK
Seaward Endeavor 8.7 SK
Seaward Navigator 8.3 SK
Seaward Quantum 8.8 SK
Seaward 2005 Tyee 8.1 SK
Seaworthy Design Enetai 9 SK
Seda Glider 10.8 FSK
Seda Gypsy 7.5 SK
Seda Ikkuma 17 8.0 SK
Seda Impulse 10.4 FSK
Seda Starlet 8.2 SK
Seda Swift 8.6 SK
Seda Viking 8.4 SK
Seward Chilco 9.4 FSK
Seward Quest 9.4 FSK
Sisson Evolution   >12.0 HPK
Skim Kayaks Dex 9.0 SK
Skim Kayaks Distance 9.8 FSK
Southern Exposure Legend 9.5 FSK
Southern Exposure Reiver 9 SK
Think Evo 14.24 HPK
Third Rock Kayak Espresso 8.4 SK
TRAK T-1600 9.0 SK
Triton Ladoga 1 7.2 SK
Twogood Chalupski 13 HPK
Twogood Phoenix 11.3 FSK
Twogood Mako   HPK
Valhalla Valhalla 12.3 HPK
Valhalla Victory 13 HPK
Valley Canoe Aquanaut 8.8 SK
Valley Canoe Aquanaut RM 8.2 SK
Valley Canoe Avocet 7.9 SK
Valley Canoe Nordkapp 9.4 FSK
Valley Canoe Nordkapp H20 8.7 SK
Valley Canoe Nordkapp LV 8.7 SK
Valley Canoe Petrel <7.6 SK
Valley Canoe Pintail 8.125 SK
Valley Canoe Selkie <8.6 SK
Valley Canoe Skerray 8.6 SK
Valley Canoe Skerray XL 8.9 SK
Valley Sea Kayak Rapier 18 11.1 HPK
Valley Sea Kayak Rapier 20 13.8 HPK
Venturesport Black Marlin <13.7 HPK
Venturesport Eclipse <13.5 HPK
Venturesport Elan Crosstrainer <14.6 HPK
Venturesport Shearwater <13.6 HPK
Venturesport Vector <12.3 HPK
Venturesport Venture 7.6 SK
Venturesport Vintage >8.0 SK
Venure Kayak Ayr 16.5 8.5 SK
Waldon Vision 6.6 SK
Walden Vista <8.0 SK
West Side Boat Shop EFT 12.5 HPK
West Side Boat Shop Marauder 17.08 HPK
West Side Boat Shop Thunderbolt T-Rex 16.54 HPK
Westside Boat Wave Piercer 11.6 HPK
Westside Boat Wave XL/Ultra 15.7 HPK
Westside Boat X Par EFT 14 HPK
Westside Boat X Par Missile 18.9 HPK
Wilderness Systems Alto <8.7 SK
Wilderness Systems Arctic Hawk 9.4 FSK
Wilderness Systems Epic 9.7 FSK
Wilderness Systems Cape Horn 15 under 8 (472cm by 61cm) SK
Wilderness Systems Cape Horn 17 8.8 SK
Wilderness Systems Seacret <8.0 SK
Wilderness Systems Sealution 8.1 SK
Wilderness Systems Sealution SS/II 8.1 SK
Wilderness Systems Sealution XL 8.8 SK
Wilderness Systems Squall 9.0 (length/width - not waterline) SK
Wilderness Systems Tchaika 14 7.9 (based on 13'11 by 21.25") SK
Wilderness Systems Tempest 165 Pro 8.6 SK
Wilderness Systems Tempest 17 9.38 (eyeballed measurements 16'5" by 21") FSK