Performance tracking

Like Strava for sailors.

... but loads better! Record on almost any watch, upload your file, and get pro-level data. Deep analysis for racers, foilers, and windsurfers.

Turn-by-turn tack and gybe analysis with map and manoeuvre stats.

Tack & gybe metrics

Every tack & gybe, unpacked.

Track each turn: 5-second exit speed, recovery rate, and a dedicated smoothness score. See how much distance and VMG you give away in tacks and gybes — not after-the-fact stories.

Speed & kit →

Deep Dive into every manoeuvre: view the same turn from multiple points of view - speed, wind angles, smoothness, ground lost - to determine how dialed your tacks really are.

  • Exit speed & recovery — short-window readouts so you know if the turn finished strong.
  • Smoothness — one score to trend week over week.
  • Distance & VMG cost — quantify what the turn took out of your height or pace.
List of tacks and gybes with turn quality and course map.
Drill each manoeuvre with map context and turn-quality metrics.

Upload your session - then invite crew or your coach

Upload GPX / TCX

Full-spectrum speed

Every dimension of fast.

Average speed only tells part of the story. We combine interval sprints, distance endurance, and wind-angle analysis to give you the total picture.

Foil analytics →

Average speed alone cannot explain why one session felt faster than another. Sessions gives you a full analysis per upload, then lets you drill into what changed when you swapped kit or sailed in different conditions.

  • Time & distance splits — track time-based peaks and distance milestones together.
  • Windrose integration — speed shown directly to your bearing and the breeze.
  • Way beyond average speed — deep dives into how kit or conditions change your speed.
Long-view speed and foiling analysis in KnotNow Sessions.

Flight metrics

New

Stop Winging it. Master Your Foil Time

Stop guessing how long you stayed up. Track total foil time, distance airborne, and the share of the session spent above the water.

Celebrate Every Minute on Foil.

From your first sustained flights to marathon sessions, track your total time and distance on foil to see your skills level up in real-time.

  • Track Your Time in the Air. Watch your foiling percentage climb. See your total time and distance on foil to get a clear, data-driven picture of your progression session after session.
  • Port vs starboard. Are you flying longer on one tack? Compare your port and starboard foil times to dial in your weaker side and achieve perfect symmetry on the water.
  • Equipment testing and tweaks. Compare sessions when you changed stabiliser, wing size, or pumping strategy and see what moved the foil-time needle.
Wing foiler on the water — progression and session debrief.

Great for beginners

New

Own the walk of shame.

You know you had to walk back up the beach, but do you know exactly how far? See your walking distance and time, compare it to last month, and watch those numbers shrink as your skills improve.

Leg analysis →

Progress loves a baseline. Celebrate every session that moves you closer to sustained flight or fewer steps on the shoreline.

  • Seeing exactly how much time and distance you spent walking back to the launch is the ultimate confidence booster. Compare today’s session to last month’s and prove you’re holding your ground better every time you ride.
  • Upwind KPIs — watch angles and VMG creep as fundamentals click.
  • Confidence loop — show up next time knowing what objectively improved.
Session logbook and progression indicators.
Leg-by-leg tactical analysis beside the sailing course map.

EVERY LEG, UNDER THE MICROSCOPE.

Not got a leg to stand on?

Drill down into every segment of your session to see the full picture. Break down your fastest reaches, best upwind angles, and peak speeds, to reveal your strengths and weaknesses.

Achievements →

Race ready? You will be.

Set bespoke race courses, marks and start and finish lines. Then compare laps - side by side for how you performed.

See exactly where the race was lost and won.

Race Logbook allows you to track season racing performance seperating racing and training.

Sailing racing analytics and race lap analysis dashboard view.
Achievements and logbook highlights.

Long-term progression

Don’t just look at today.

Chart pace, foil time, and milestones across months or seasons — a living logbook for you, your crew, and your coach with evidence always one link away.

Don't miss how you sailed. Stack sessions in the logbook, rank them with leaderboard presets, and let achievements surface the breakthroughs worth repeating.

  • Searchable logbook — every upload in one sortable stream.
  • Leaderboard lenses — overall, upwind, manoeuvres, speed columns on demand.
  • Milestones that stick — foil time PBs, walk-back trends, tactical wins worth sharing.

Ready when you are.

Read the setup guide

Why Sessions · How it works · Pricing · FAQ

KnotNow Garmin watch feature preview.

Capture on wrist

KnotNow Sailing & Race Timer

Record your session with our own Easy-to-read sailing app. Built for sailors, wing foilers, and windsurfers designed around one rule: glanceable on the water. Big numbers, high-contrast type, and zero clutter.

Ready to turn your next session into real progression?

Quick setup guide