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Data
Boats

Source
Boats
Marks
UW TWA: —° DW TWA: —° SL km/h TWA: —°
Boat sensor
Smoothing
TWD avg: s ⓘ
TWS avg: s ⓘ
Layline adjust
UW: °
DW: °
Bends with the wind across the course. Sources: the wind overlay's when active — otherwise the Laylines' wind-source pool (no overlay shown).

Polar
No polars found — laylines use fixed angles, optimal start unavailable.
Polar multiplier — Uw/Dw beats
Requires a polar.
Marks source
Session only — reopens on live marks.
No course XML found for this race.
Alarm boat config

Requires a polar.
Per-boat reach-by-the-gun fans + line congestion. Shows only while the countdown runs.
The start-line strip in the top-right panel is always on during the countdown, roses or not.
Display
Model
Accel τ (s)
Turn rate (°/s)
Tack penalty (s)
Window (s)
Sweep step (°)
Spoke step (°)
Min BSP (km/h)
τ = 0 uses the static polar (no acceleration).
Boats

Loading current…

Requires a polar.
Click the map to place points (X → T1 → box → line).
Race clock
Speed model
Accel phase

Requires a polar.
Click the map to add points · right-click a point to delete.
Free trajectory polar ratio (BSP scale)

Route options from the gate being rounded to the next gate, bouncing off the boundary and the laylines (needs Laylines on).
Tacks & gybes · priced at this wind
Maneuver-loss table unavailable — check targets/maneuver_loss.csv.
radiuslandsto tgtloss

The ladder rung we land on after a tack/gybe, from the measured maneuver-loss table. Boats ahead of it we don't cross.
Maneuver-loss table unavailable — check targets/maneuver_loss.csv, or restart the backend if it was added while the server was running.
Who counts
Line
Call
Crossing alert
Call
Now: m at km/h
Below foil-up TWS — the table's lowest rows are flat.

TWS Sources
Boats
Marks
Rendering

View presets
One-click views of what's shown on the map (the slim bar top-centre; the "Modes" chip shows/hides it). A preset only changes what it pins — hover it for the exact list. Toggling things afterwards never edits the preset: the pill just un-lights (custom view). Use to save the current view into a preset.
Auto switching
Share settings
All toggles and these presets save automatically in this browser and survive race switches and reloads — renaming or editing a preset here changes nothing for anyone else. Export a JSON file to share your setup, or apply the published team defaults; Reset re-adopts the team preset list but opens on Base.
SIM ·
START
LEG TTS
TWD°
Axis°
TWSkph
Bias
TTB
SRC
Start line contenders @ gun
X → T1 · τ
T1
T2
Ratio
TTK
START · TTK line first · SL1 | ● | SL2
SIMULATE REPLAY — steer to take over
BSP km/h TGT
TWA VMG
TWS km/h
TARGET
⚙
scrub the player, then steer (or TAKE HELM) · ← → helm · ↓/I invert · space play/pause
CROSS
loss m · TWS · lag s
ladder · tack · cross (m)
No boats in range
Boat Now Tack Cross
✔ clears ↓ costs ✘ ahead = same tack
Beat · next gate
Free trajectory · legs
add a second point
Total ·
M1 → laylines · TTB
no M1 / gate data
Δ vs OPTTime→M1TWABSPDist
Pre-start
SL angle
Racing
Map
Panels
Boats
Boat BSP TWA TWD
Marks Wind · 10s avg
Mark TWD TWS
Ranking
#BoatΔm
Waiting for race data
BRA BRA Alarms
Rake Pres > ~
Max Diff
CA1 Ang ~
Wing Twist max ~
DB P cyc ≤
DB S cyc ≤
TWD ---° | Course ---°
BRA wind last 15 min