# Paddles & Oars — lean notes

Scope: supplies > active > paddles. Human-powered paddles and oars for watercraft propulsion — kayak paddles, canoe paddles, SUP (stand-up paddleboard) paddles, and rowing oars (sweep/scull); excludes racquet-sport paddles (pickleball, platform tennis, table tennis — see sibling leaf Racquets & Paddles) and the boats/boards/kayaks themselves (see sibling leaves Watercraft, Watersport Boards).

## Seed
1. Paddles equivalent of a treadwear grade: the bent-shaft blade offset angle (10–15°) — a spec stamped by one maker that compares reliably within that maker's line, since brands land on different "industry standard" angles (Werner 10°, Bending Branches 11°, older convention 12–15°).
2. A sommelier-type expert notices first that paddle length isn't one universal number — it's a relationship between the paddler's own body, the boat's width, and stroke style (like vintage only means something against a specific site), while a typical buyer looks for "the right size" as if one exists in the abstract.

No certification/safety standard governs paddles or oars themselves (unlike PFDs or helmets); World Rowing's "Class II lever" language is a competition rule, not a certification, so no standard facet applies here.

## Sources
- [wikipedia_paddle] https://en.wikipedia.org/wiki/Paddle — feathering, bent-shaft angle (12–15°), wing blade — fetched excerpt: "Kayak paddles having blades in the same plane... are called un-feathered... Bent shaft paddles... have a blade that is angled from the shaft, usually 12 to 15 degrees."
- [wikipedia_oar] https://en.wikipedia.org/wiki/Oar — oar vs paddle pivot, wood→carbon material — fetched excerpt: "paddles are held in both hands... and are not attached to the vessel"; "modern oars are made from synthetic material, the most common being carbon fibre."
- [wikipedia_oar_sport] https://en.wikipedia.org/wiki/Oar_(sport_rowing) — sweep vs scull, cleaver vs Macon blade — fetched excerpt: "When the rower uses one oar... sweep... two oars... sculling"; "cleaver... is used almost universally... Macon... for novice crews."
- [wikipedia_kayak] https://en.wikipedia.org/wiki/Kayak — Greenland paddle length/width — fetched excerpt: "This Greenland paddle is 210 cm (7 ft) in length, and much narrower than European paddles."
- [wikipedia_sup] https://en.wikipedia.org/wiki/Standup_paddleboarding — SUP length-to-height offset — fetched excerpt: "should be between 8 and 15 inches... taller than the user."
- [werner_kayak_touring_fit] https://www.wernerpaddles.com/pages/touring-design-fit — high/low angle length bands, feather increments — fetched excerpt: "High Angle designs work best... 205cm - 215cm"; "adjust to your desired feather angle in 15 degree increments."
- [werner_whitewater_fit] https://www.wernerpaddles.com/pages/whitewater-design-fit — Dynel edge, blade material tiers — fetched excerpt: "we mold in a thick Dynel edge guard... impact and abrasion resistant."
- [werner_canoe_fit] https://www.wernerpaddles.com/pages/canoe-raft-design-fit — 10° offset, adjustable canoe lengths, palm grip — fetched excerpt: "Canoe Touring - 10 Degree Offset... the industry standard"; "touring paddles adjust from 50”-58” and... whitewater paddles adjust from 54”-62”."
- [werner_sup_fit] https://www.wernerpaddles.com/pages/stand-up-paddle-design-fit — dihedral, offset degrees, LeverLock range — fetched excerpt: "12 Degree Offset... optimal for SUP racing"; "LeverLock... featuring 16 inches of adjustment."
- [aquabound_kayak_sizing] https://www.aquabound.com/pages/kayak-paddle-sizing-guide — length factors, high/low angle, ferrule/feather — fetched excerpt: "the primary factors... is your height as well as the width of the kayak"; "Feathering is how the two paddle blades offset each other."
- [aquabound_sup_sizing] https://www.aquabound.com/pages/sup-paddle-sizing-guide — SUP offset by discipline — fetched excerpt: "Recreational/flatwater—Add 8-10 inches... SUP Racing—Add 4-6 inches."
- [bendingbranches_kayak_sizing] https://www.bendingbranches.com/blogs/resources/kayak-paddle-sizing-guide — high/low angle length — fetched excerpt: "High-angle paddling is aggressive and fast... your paddle should be shorter."
- [bendingbranches_canoe_sizing] https://www.bendingbranches.com/blogs/resources/canoe-paddle-sizing-guide — 11° bend, T-grip/palm grip, beavertail, torso sizing — fetched excerpt: "we design our shafts with an 11-degree bend"; "The T-grip is only available on the Expedition Plus"; "if your torso is 32" then your straight shaft size would be on average 58"."
- [concept2_oar_history] https://www.concept2.com/oars/oar-options — cleaver/hatchet history, carbon material — fetched excerpt: "This asymmetric hatchet-shaped blade is 1–2% faster than existing designs... used during the 1992 Barcelona Olympics."

## Branches
- craft_type=kayak_paddle vs canoe_paddle: wikipedia_paddle — "Paddles for use in kayaks are longer, with a blade on each end... Paddles commonly used in canoes consist of... a handle on one end and a rigid sheet... on the other."
- craft_type=sup_paddle: wikipedia_sup — "An SUP paddle... similar to but longer than traditional canoe paddles."
- craft_type=rowing_oar: wikipedia_oar — "an oar is attached to the watercraft via a fulcrum," unlike a hand-held paddle.
- canoe_paddle makes_irrelevant paddling_angle_style: no canoe source (werner_canoe_fit, bendingbranches_canoe_sizing) ever discusses high/low-angle cadence, only shaft bend and grip — that split is kayak/SUP-only.
- rowing_oar makes_irrelevant paddling_angle_style/shaft_material/blade_material_tier: wikipedia_oar's fulcrum-pivot description means stroke angle and shaft/blade material are tracked instead by oar_type/oar_shaft_material/oar_blade_shape.

## Noise
- Kayak/board width specs (rec 26–30in, touring 22–25in, performance 19–22in, from aquabound_kayak_sizing) — describes the boat, not the paddle; out of scope.
- Paddle/oar weight in oz/g (wikipedia_paddle: "two pounds or less... as light as 22oz"; concept2_oar_history: wood >7kg vs composite <2.5kg) — tracks shaft/blade material already in shaft_material/oar_shaft_material; not split into its own numeric facet since only one source per figure.
- SUP paddle price/weight tiers ($99.95–$324.95, 18–28.5oz, from aquabound_sup_sizing) — price is never a facet; weight folded into shaft_material.
- Werner shaft diameter (standard vs "small fit," 6.5in hand-size cutoff, werner_kayak_touring_fit) — real spec row but single-brand and ergonomic/minor; left out to keep the facet count in range.
- Blade dihedral and edge-guard reinforcement as standalone rows (werner_sup_fit, werner_whitewater_fit) — folded into blade_material_tier's why_experts_care rather than given separate facets.

## Corrections (2026-10-26)
- Added facet paddle_piece_count (1/2/3-4 piece breakdown), sourced to werner_kayak_touring_fit + werner_canoe_fit, fetched fresh and confirmed via each page's own "Pieces" comparison field.
- Added facet blade_surface_area (76-138in2), sourced to werner_whitewater_fit + werner_sup_fit, fetched fresh and confirmed via each page's own "Blade Surface Area" comparison field; added both new facets to rowing_oar's makes_irrelevant since no source showed either spec on oars.
- Added primary_use_setting to rowing_oar's makes_irrelevant so the whitewater/surf value is never offered for a rowing shell.
- Added a judgement flagging sup_blade_offset_angle's 7/10/12-degree values as single-sourced to werner_sup_fit (aquabound_sup_sizing gives no degree figures).
- Added vocabulary entries for "Swing weight" (shaft_material) and "Cranked shaft (kayak)" (kayak_shaft_bend).
- Added two Branches lines (above) citing why canoe_paddle/rowing_oar legs make paddling_angle_style/shaft_material/blade_material_tier irrelevant.