RC Sailing

Solo · Paused

−00:10Stopped

- FPS Boat - m/sWind - m/s

HOME LAKE Lake centredO to return to overview

Boat

Your boat settings are personal; changes are visible to room members.

Boat type

A rigs. Change while paused to return your boat to launch. Online, each player chooses their own boat; the owner pauses the room. Tight courses may need wider buoy spacing before choosing DF95. Solo choice is saved on this browser and restored after online visits. Boat selection is locked during replay. DF95 handling uses labelled estimates, not measured performance.

Highlight color

Sail number

Your boat only. Up to 6 digits, including leading zeroes. Leave blank to hide. Numbers apply when you leave the field. Solo choices are saved separately from rooms. Locked during replay.

Solo Start/pause: owner only online. Reset: your boat only.

Ready at the pier

Multiplayer

Rooms keep up to 90 seconds of boat history for shared replay. FPS, Ping/RTT and snapshot freshness are shared by default. You can turn replay measurement sharing off in Replay & logs before joining. The existing live FPS indicator is separate. No chat or media is recorded.

Standalone sailing. Online connects only when requested.

Session & timer

Solo

Solo Clock controls are owner only online.

Countdown start

Counts down to zero, then upwards. Pausing sailing also pauses the clock. Stop holds the time; Start clock resumes it. Reset or a new countdown start stops the clock at the selected time. Boat Reset does not reset the clock.

Wind & clouds

Solo

Wind affects sailing. Owner only online.

At boat 3.0 m/s toward 90°

Base wind speed 4.9 m/s

The midpoint of the low-to-high wind range. With no speed variation, this is the wind speed everywhere. Only the room owner can change shared weather.

Wind blows toward 90°

0° far shore · 90° right · 180° pier. This is the base direction. The arrow shows wind at your boat; the streamer shows apparent wind.

Clouds Visual only

Cloud height 100%

Relative apparent height, not measured metres. Lower clouds drift faster; higher clouds drift slower. 100% is the default, 50% doubles its drift and 300% slows it to one third. Clouds follow base wind direction and speed. Only visual motion changes, including reflections; cloud coverage and sailing forces stay the same. Shared online; owner only.

Wind behaviour

Affects sailing. Shared online; owner only.

Wind-speed patches

Wind speed range 30%

Low to high: 4.17–5.64 m/s

The full low-to-high span around base wind speed. 10% means base ±5%, before the 0–6 m/s limit. Zero removes speed differences. Try 20% to start. These moving patches are synthetic weather, not an atmospheric simulation.

Strong-wind coverage 73%

0% gives the low end of the wind range everywhere; 100% gives the high end everywhere. In between, this sets approximate strong-wind coverage across the repeating patch field. Coverage inside the lake varies as patches pass. More coverage raises average wind speed, not the midpoint.

Wind patch size 16.0 m

Approximate crosswind patch spacing and size. Patches are longer downwind and travel with the background wind. Coverage controls how far strong wind spreads, independently of patch size.

Patch size variation 0%

Mixes smaller and larger patches around the chosen wind patch size. This does not change the wind speed range.

Wind-direction swings

Typical direction swing 0°

Typical Gaussian spread around the base direction, not a maximum. Larger swings can occur. Zero holds the bearing. Direction changes apply across the lake, rather than inside individual patches. Try 10° to start.

Time between swings 5.0 s

Time between new direction targets. The wind moves smoothly between targets. Patch travel still follows the background wind. Try 5 seconds to start.

Water

Solo

Owner only online. Visible with Reflective water, enabled in Visuals.

Waves

Wave height ×1.13

Choose a wave height that suits the size of the water. ×1.13 is the default, ×0 removes waves, and ×2 doubles the underlying wave size. Waves follow base wind slowly and ignore gusts. Changes visual bobbing, not sailing forces. Original water stays flat.

Tuning

Direction response time Tuning 8.0 s

Adjusts a built-in default that will be fixed later. Seconds to roughly 90% of a held wind-direction change. Lower is faster. Further direction changes wait for the current transition to finish. These timings are visual estimates, not measured water behaviour.

Strength response time Tuning 6.0 s

Adjusts a built-in default that will be fixed later. Seconds to roughly 90% of a held wind-speed change. Lower makes wave strength respond faster. This changes visual waves, not wind or sailing forces.

Secondary wave offset Tuning -19.3°

Adjusts a built-in default that will be fixed later. Turns the secondary wave relative to the primary wave, which follows the background wind. Positive turns clockwise. Changes apply immediately, even while paused.

Secondary wave height Tuning 100%

Adjusts a built-in default that will be fixed later. Height relative to the primary wave. 0% turns the secondary wave off. Combined heights are normalised to keep the same maximum. Changes apply immediately, even while paused.

Tertiary wave offset Tuning +32.8°

Adjusts a built-in default that will be fixed later. Turns the tertiary wave relative to the primary wave. Positive turns clockwise. Changes apply immediately, even while paused.

Tertiary wave height Tuning 100%

Adjusts a built-in default that will be fixed later. Height relative to the primary wave. 0% turns the tertiary wave off. Combined heights are normalised to keep the same maximum. Changes apply immediately, even while paused.

Main water noise

Tuning

Noise height Tuning 5 cm

Adjusts a built-in default that will be fixed later. Maximum total trough-to-crest range, independent of wind. Zero turns noise off and preserves the original waves. Adds visual surface variation without changing sailing forces. Enabling noise uses a denser water mesh and may reduce frame rate, especially on larger lakes. Excluded from water inspection.

Noise period Tuning 0.24 m

Adjusts a built-in default that will be fixed later. Nominal spatial scale, not an exact distance between random peaks. Smaller values make finer noise. The pattern evolves smoothly at a fixed rate of 0.1 temporal cells per second without drifting.

Noise stretch Tuning 2.9×

Adjusts a built-in default that will be fixed later. Scales noise along the selected crest axis. 1× removes deliberate elongation. Values below 1× compress that axis.

Noise offset Tuning 0.0°

Adjusts a built-in default that will be fixed later. Zero follows the primary wave crests, perpendicular to primary wave travel. Positive turns clockwise, like the secondary wave offset.

Ripple appearance

Fine ripples follow the local wind immediately.

Tuning

Ripple spacing Tuning 5%

Adjusts a built-in default that will be fixed later. Spacing relative to the original texture. 10% is ten times finer; 5% is twenty times finer. This changes shading detail, not geometric wave height or wind. Distant detail filters out rather than flickering.

Ripple strength Tuning ×0.65

LessDefaultMore

Adjusts a built-in default that will be fixed later. Higher makes wind-driven ripples and broken reflections stronger. Instant response, no extra delay. Calm stays calm. This changes water appearance for the room, not the wind.

Ripple contrast Tuning ×1.12

LessDefaultMore

Adjusts a built-in default that will be fixed later. Scales a built-in estimate of how strongly gusts show in the ripples. ×1.12 is the default chosen in playtesting. ×0 makes ripples uniform; ×2 doubles the underlying response. Bigger gusts make bigger differences. Does not change wind, sailing or darkness.

Ripple darkness Tuning ×0.00

Adjusts a built-in default that will be fixed later. Optional blue darkening of stronger-wind water, off by default. ×0 switches it off; move right for more, up to ×3. Independent of ripple strength and contrast.

Reflections

Tuning

Reflection sensitivity Tuning ×1.00

LessDefaultMore

Adjusts a built-in default that will be fixed later. More makes reflections fade faster as local ripples increase, including gust patches. Less keeps them stronger. Calm-water viewing-angle behaviour stays unchanged. The centre, ×1, keeps the previous response; ×0 removes ripple-based fading and ×32 gives the strongest sensitivity. Does not change water opacity or the ripple pattern. This is a visual tuning estimate, not measured water optics.

Resets all wave, noise, ripple and reflection settings in this section. Boat and weather stay unchanged.

Environments

Solo

Pause to change location. Owner only online.

Sailing location

Water colour #387F83 Water opacity 100%

Adjust while sailing. Owner only online; saved with environments. Reset clears colour and opacity overrides for the current lake. Switching locations uses the destination's defaults and offers to save unsaved environment changes first. Colour is a lit/reflected base tint; opacity is independent of Home's Transparent water. Inspection is unchanged.

The original lake, with its pier, rocks, trees and reeds.

Saved environments include the location, custom outline and scenery, weather, water colour and opacity, wave settings and buoy layout. Online the owner applies scenes while paused; guests update automatically.

Lake & buoys

Solo

Owner only online.

Lake size 25 × 25 m

Lake and buoy changes pause sailing. Buoys scale with the lake. The boat returns to launch only if the new layout would overlap it. Settings and buoy positions are saved on this browser.

Choose a colour and an optional label, up to 3 letters or numbers. Leave the label blank for an unmarked buoy.

Move buoys

Turn on to pause and drag buoys on the lake. Overlapping drops are blocked. Turn off, then resume sailing.

Saved environments

Local Save, Update, Default and Delete affect this browser only. Guests can save the current room.

Solo Apply changes the live environment. Pause first; owner only online.

Camera

Local

Camera height 2.8 m

Observer height above the water.

Fixed restores the shoreline view, with normal zoom, and aims at the lake centre as you change height. At 1×, all three modes use the same wide lens. Zoom in while following to set your boat's size; the zoom reading then changes as the camera tracks its distance. The slider's maximum keeps the same close-up boat framing at any distance. Free keeps the current view and zoom range until you move it. At Home lake, the observer stays on the pier. At the photo venues, the observer stays at the shoreline and cannot walk. Hold the left mouse button over the lake and drag: left/right looks, up/down walks along the pier. Xbox D-pad uses the same directions. Movement stops 1 m short of each end. Manual looking selects Free. Walking can keep following your boat. Near corners can be outside the view.

Zoom 1.0×

Visuals

Local

High detail

High uses the usual water, shadows and scenery. Low turns off reflections, transparency and shadows, with fewer trees, water plants and bushes. Reeds move in both modes; trees move in High only. Scenery is saved in this browser; water and shadows reset on reload.

Reflective water

Reflective water. Sailing physics unchanged.

Fine ripples reveal the local wind immediately. Main waves follow the background wind more slowly. Waves, wakes and boat bobbing are visual only; local wind changes the sail forces. Pause freezes gust patches, but surface animation and old wakes continue. Water style is not saved. Wave and ripple settings in Water are shared online and controlled by the room owner. They save on this browser in standalone mode and apply only to Reflective water. Turn off Reflective water to use Original water for performance.

Transparent water

Clearer shallows with submerged stones and a simple lakebed. Underwater boat parts fade with depth; reflections remain stronger at low viewing angles. Requires Reflective water at Home lake and is unavailable during water inspection. The photo venues have no modelled lakebed. Your choice is retained while unavailable. Local only, resets on reload, and excluded from Saved Environments and replay. No refraction or changes to sailing physics.

Shadows

Cached sun shadows from Home's pier and rocky shore. Boats, buoys and foliage do not cast shadows. Works with either water style. Unavailable at the photo venues; your Home choice is retained. Local to this page, not saved or shared. Water inspection stays unshaded.

Scenery

Local visual settings. Saved in this browser, not shared online.

Show wind in trees

Show wind in reeds

Turn off to keep that scenery still. Tree movement follows base wind; reeds follow local gusts. These switches do not change sailing wind, clouds or water.

Tree density 100%

Water plant density 100%

Bush density 100%

Bushes use the lowest-detail export, LOD2, and stay static. Clusters sit near trees and the woodland backdrop. Zero removes all bushes. Bushes are visual-only and stay in this browser, not shared online or included in Saved Environments or replay.

Advanced tree detail

Foreground

Loading trees…

Midground

Loading trees…

Background

Loading trees…

Total: Loading trees…

Loading oak assets…

Layers are fixed bands from the shoreline inland, not distances from the camera. Tree density changes all three bands; zero removes every tree. LOD 1, 2 and 3 use the exports named LOD0, LOD1 and LOD2. Only 3D foreground and midground trees move with base wind; PNGs and background trees stay still. PNGs are flat, so elevated views may reveal them.

Counts cover all placed trees, including those outside your view. They exclude water plants, bushes, the water, boats and reflection pass. Reflective water draws visible trees again. Compare with Performance & diagnostics; high density and detail can reduce frame rate. These settings are excluded from Saved Environments and replay.

Water plant density is independent of tree density; zero removes all water plants. Cattails respond to local wind and gusts. Plants are visual-only and do not affect sailing. All tree and plant settings stay in this browser, not shared online or included in Saved Environments or replay.

Loading bushes…

Loading bush assets…

Sailing data

Local

Boat readings

Boat speed0.00 m/s

Main sail travel limit55°

Main sail angle55° right

Jib travel limit—

Jib angle—

Boat heel0°

Forces

Show force arrows

See what pushes the boat. Display only, no change to the physics.

Arrows start at the boat centre on the water, not the actual force locations. Turning moments use those real model locations; right/left are the boat's right/left.

Wind pushes through the mainsail and jib arrows. The existing wind arrow shows air direction, not force. The white Net force arrow combines all five forces, even hidden ones. It shows the resulting push, not the boat's direction of travel. Horizontal loads only; heel and contact impulses are not shown. Paused arrows show the current loads, not a replay.

Force arrow scale 1 m / N

One fixed scale for every arrow. Increase it for small forces. Long arrows may leave the view. Untick a force below to separate overlapping arrows.

Boat forces
Arrow	Force	Turns bow

Yaw damping
Net turning moment

Phone controller

Controls & help

Xbox controls

Right stick steers the boat.
Left stick ↓ hauls both sails in.
Left stick ↑ eases both out.

Release the left stick to hold both sheets. One winch controls their travel; wind moves each sail independently. The jib sits a little farther out than the main.

Keyboard ready · connect an Xbox controller

Sail telltales

Each sail has black yarn on both sides. Both streaming aft suggest useful trim. Windward yarn lifting suggests hauling in or bearing away; leeward yarn fluttering suggests easing or heading up.

These are approximate visual cues, not measured airflow or a fastest-speed guide. Light air makes the yarn hang; downwind and reversed flow give unsettled, unreliable trim cues. Near-side yarn is black; far-side yarn shows through its own sail in light grey. Other sails, boats and scenery still hide it. The main pair sits between the number rows. Zoom in with Follow to see them.

Keyboard & sailing notes

A / D or ← / → steer.
W / ↑ ease. S / ↓ haul.
Space pauses. R resets. O restores Fixed view.
Hold left mouse button and drag over the lake: left/right looks, up/down walks at Home lake. The photo venues have fixed shoreline positions. Mouse wheel zooms.
Xbox D-pad: left/right looks, up/down walks at Home lake. Release the D-pad after returning from settings or another window.
Xbox View, overlapping rectangles, starts/pauses sailing. Menu, three lines, resets.

Centre both sticks and release View/Menu to arm after a pause or reset. Click the lake to return control after adjusting a slider.

Sail across the wind to start. Haul in to sail closer to the wind; ease when sailing away from it. Turn through the wind with some speed to tack. Haul before a gybe, then ease on the new side.

Head to wind, the boat can drift backwards. The rudder turns the opposite way while backing; use that to fall off the wind. Direction swings can help but do not guarantee recovery.

The shore marks Home lake's boundary. At calibrated photo venues, the estimated photographed shore marks the sailing boundary. Advanced Landscape editor lets you adjust that outline while paused in solo. Older custom scenes and historical replays retain their original geometry and may show a red boundary line. Contact stops the boat from crossing and can prevent backwards steering. Reset returns you to the launch point without changing the current weather.

This is a researched, simplified model, not a measured DF65 performance predictor. Heel is visual and capped; there is no capsize.

Are you still there?

Save environment changes?

RC Sailing

We couldn't launch the boat