diff --git a/src/mobile-hud.js b/src/mobile-hud.js
index d549d7b..8e68c94 100644
--- a/src/mobile-hud.js
+++ b/src/mobile-hud.js
@@ -5,6 +5,7 @@ import rightControlsSrc from './assets/controller/right-controls.js';
 import cannonRoundelSrc from './assets/controller/cannon-roundel.js';
 import helmFrameSrc from './assets/controller/helm-frame.js';
 import helmKnobSrc from './assets/controller/helm-knob.js';
+import { airshipLog } from './diagnostics.js';
 
 const isDesktopPointer = window.matchMedia('(hover: hover) and (pointer: fine)');
 
@@ -417,6 +418,12 @@ if (!isDesktopPointer.matches) {
       image.src = src;
       image.alt = '';
       image.draggable = false;
+      image.addEventListener('error', () => {
+        airshipLog('hud:image-error', {
+          component: className,
+          srcType: src?.slice?.(0, 32) || 'unknown',
+        }, 'error');
+      });
       piece.appendChild(image);
 
       if (inner) piece.insertAdjacentHTML('beforeend', inner);
@@ -453,6 +460,8 @@ if (!isDesktopPointer.matches) {
     helmFrame.src = helmFrameSrc;
     helmFrame.alt = '';
     helmFrame.draggable = false;
+    helmFrame.addEventListener('load', () => airshipLog('hud:helm-frame-loaded'));
+    helmFrame.addEventListener('error', () => airshipLog('hud:helm-frame-error', {}, 'error'));
     radarPiece.appendChild(helmFrame);
 
     const helmKnob = document.createElement('img');
@@ -460,6 +469,8 @@ if (!isDesktopPointer.matches) {
     helmKnob.src = helmKnobSrc;
     helmKnob.alt = '';
     helmKnob.draggable = false;
+    helmKnob.addEventListener('load', () => airshipLog('hud:helm-knob-loaded'));
+    helmKnob.addEventListener('error', () => airshipLog('hud:helm-knob-error', {}, 'error'));
     radarPiece.appendChild(helmKnob);
 
     radarPiece.insertAdjacentHTML('beforeend', `
@@ -595,6 +606,11 @@ if (!isDesktopPointer.matches) {
       requestAnimationFrame(update);
     };
 
+    airshipLog('hud:mounted', {
+      mobile: true,
+      pieces: hud.querySelectorAll('.steam-piece').length,
+    });
+
     requestAnimationFrame(update);
   }
 }