SLSC Mark Navigator

GPS NOT Connected
📋 Setup
Active Navigation Target
No Mark Selected
--.-----, --.-----
Est. Depth at Mark: -- ft
Tap to change mark
Navigation Method
💡
Approach Tip: Approach the mark set location from downwind to make holding location position easier.
Distance to Mark
--.- ft
Target Bearing
---°
Current Heading
---°
Steer / Adjust
---
Speed (SOG)
0.0 mph
Time to Mark
--m --s
N
NE
E
SE
S
SW
W
NW
🧭 Compass Status
⏳ Checking…
Select Navigation Mark
Select Race Course
🧪 Standalone Demo Mode (Mock Coordinates) This menu is for simulation and offline testing. In live deployment, opening a shared course link (from the Setup App) will automatically bypass this screen and load the active marks.
📥 Sync Course Coords from Setup App
🎯 IN RANGE
Drop anchor and set the mark now!

⛵ Downwind Approach Active

How U-Turn Downwind Approach works:

  1. Downwind Run: Steer parallel to the wind, offset West of the mark by exactly 100 yards (300 ft).
  2. Initiate Turn: At 50 ft South of the mark, start a gradual left turn of radius 150 ft (50 yards).
  3. U-Turn Arc: Loop South reaching a max overshoot of 200 ft, exiting exactly 50 ft South of the mark on the centerline.
  4. Runway: Drive the final 50 ft straight upwind directly to the mark.

⚠️ INITIATE U-TURN NOW

Warning to the driver:
You have reached the turn entry point (50 ft South, 100 yards West of the mark).

Start the gradual left U-turn now using a 150 ft radius to sweep South to 200 ft and exit 50 ft South on the centerline!

[Sim Mode Only]: Dismissing this warning will automatically decrease the simulator boat speed to 8.0 mph for a controlled approach to the mark.

⚠️ DRIFTED OFF POSITION

You have drifted too far from the set location. Please readjust the boat's position to get back within the 15 ft set zone.

⚠️ Sequence Alert Warning

📋 Operation Sequence Guide

Sync Coordinates

Paste or sync the coordinate link sent by the Committee Boat. Tapping a shared SMS link does this automatically on startup.

Select Target Mark

Tap the main Active Target Mark card to overlay the mark list. Choose the mark you want to navigate to first.

Choose Approach Mode

Select Direct or Downwind U-Turn approach mode. Downwind approach projects a waypoint 150 yards downwind to help align the boat.

Compass & Steering

Steer following the blue compass needle. Compass can be locked to Heading Up or North Up. Use simulator mode to practice.

🌐 Browser Compatibility: For the web version, use Google Chrome (Android) or Safari (iOS). Privacy-focused browsers like DuckDuckGo, Brave, or Firefox block GPS/location and motion/compass sensors due to fingerprinting protections.