diff --git a/src/multiplayer.js b/src/multiplayer.js
index e885bd6..a23f016 100644
--- a/src/multiplayer.js
+++ b/src/multiplayer.js
@@ -22,6 +22,7 @@ let inputSequence = 0;
 let profile = null;
 let selfSnapshot = null;
 let worldSeed = 'SKYWARD-001';
+let weatherRoutes = [];
 let multiplayerEnabled = localStorage.getItem(MULTIPLAYER_ENABLED_KEY) !== 'false';
 
 const statusButton = document.createElement('button');
@@ -148,6 +149,7 @@ const connect = async () => {
     inputSequence = 0;
     setStatus('online');
     emitConnection('online');
+    sendWeatherLayout();
   });
 
   ws.addEventListener('message', (event) => {
@@ -217,6 +219,29 @@ const sendInput = (input = {}) => {
   return inputSequence;
 };
 
+const sendWeatherLayout = () => {
+  if (socket?.readyState !== WebSocket.OPEN || weatherRoutes.length === 0) return false;
+  socket.send(JSON.stringify({
+    type: 'weather-layout',
+    routes: weatherRoutes,
+  }));
+  return true;
+};
+
+const setWeatherRoutes = (routes = []) => {
+  weatherRoutes = (routes || [])
+    .slice(0, 24)
+    .map((route) => ({
+      id: String(route?.id || ''),
+      fromX: Number(route?.from?.x) || 0,
+      fromY: Number(route?.from?.y) || 0,
+      toX: Number(route?.to?.x) || 0,
+      toY: Number(route?.to?.y) || 0,
+      width: Number(route?.width) || 220,
+    }));
+  sendWeatherLayout();
+};
+
 const fire = (side) => {
   if (socket?.readyState !== WebSocket.OPEN) return false;
   const normalized = side === 'port' || side === -1 ? 'port' : 'starboard';
@@ -270,6 +295,7 @@ window.airshipMultiplayer = {
   logout,
   connect,
   setEnabled,
+  setWeatherRoutes,
   getState,
   getSelfId: () => selfId,
   isAuthenticated: () => authenticated,