diff --git a/client/src/components/AuthOnboarding.tsx b/client/src/components/AuthOnboarding.tsx
index f6138e9..1665fbd 100644
--- a/client/src/components/AuthOnboarding.tsx
+++ b/client/src/components/AuthOnboarding.tsx
@@ -79,10 +79,10 @@ export default function AuthOnboarding({ onAuthenticated }: AuthOnboardingProps)
       if (success) {
         onAuthenticated()
       } else {
-        setError('Incorrect recovery phrase. Decryption failed.')
+        setError(t('auth.error_incorrect_recovery'))
       }
     } catch (err: any) {
-      setError('Decryption failed. Please check your recovery phrase.')
+      setError(t('auth.error_decryption_failed'))
     } finally {
       setLoading(false)
     }
@@ -121,7 +121,7 @@ export default function AuthOnboarding({ onAuthenticated }: AuthOnboardingProps)
 
         <div className="auth-actions">
           <button className="btn secondary" onClick={copyToClipboard}>
-            {copied ? 'Copied!' : 'Copy Phrase'}
+            {copied ? t('auth.copied') : t('auth.copy_phrase')}
           </button>
           <button className="btn primary" onClick={onAuthenticated}>
             {t('auth.confirm_recovery')}
@@ -137,16 +137,16 @@ export default function AuthOnboarding({ onAuthenticated }: AuthOnboardingProps)
       <div className="auth-card glass">
         <div className="auth-header">
           <KeyRound className="auth-icon accent" size={48} />
-          <h2>Enter Recovery Phrase</h2>
+          <h2>{t('auth.enter_recovery')}</h2>
         </div>
         <p className="recovery-warning">
-          Your Passkey authenticated successfully, but your device does not support hardware key derivation. Enter your 12-word recovery phrase to decrypt your logbook.
+          {t('auth.recovery_fallback_warning')}
         </p>
 
         <form onSubmit={handleRecoverySubmit} className="auth-form">
           <textarea
             className="input-textarea"
-            placeholder="Enter your 12-word recovery phrase separated by spaces..."
+            placeholder={t('auth.recovery_placeholder')}
             value={recoveryInput}
             onChange={(e) => setRecoveryInput(e.target.value)}
             disabled={loading}
@@ -163,10 +163,10 @@ export default function AuthOnboarding({ onAuthenticated }: AuthOnboardingProps)
               onClick={() => setShowRecoveryFallback(false)}
               disabled={loading}
             >
-              Back
+              {t('auth.back')}
             </button>
             <button type="submit" className="btn primary" disabled={loading}>
-              {loading ? 'Decrypting...' : 'Decrypt Logbook'}
+              {loading ? t('auth.decrypting') : t('auth.decrypt_logbook')}
             </button>
           </div>
         </form>
@@ -192,13 +192,13 @@ export default function AuthOnboarding({ onAuthenticated }: AuthOnboardingProps)
           disabled={loading}
           style={{ width: '100%', padding: '16px' }}
         >
-          {loading ? 'Processing...' : t('auth.login')}
+          {loading ? t('auth.processing') : t('auth.login')}
         </button>
 
         {/* Separator */}
         <div style={{ display: 'flex', alignItems: 'center', margin: '10px 0', width: '100%' }}>
           <div style={{ flex: 1, height: '1px', background: 'rgba(255,255,255,0.1)' }}></div>
-          <span style={{ padding: '0 10px', fontSize: '12px', color: '#64748b', textTransform: 'uppercase' }}>or register</span>
+          <span style={{ padding: '0 10px', fontSize: '12px', color: '#64748b', textTransform: 'uppercase' }}>{t('auth.or_register')}</span>
           <div style={{ flex: 1, height: '1px', background: 'rgba(255,255,255,0.1)' }}></div>
         </div>
 
@@ -208,7 +208,7 @@ export default function AuthOnboarding({ onAuthenticated }: AuthOnboardingProps)
             <input
               type="text"
               className="input-text"
-              placeholder="Username / Skipper Name"
+              placeholder={t('auth.username_placeholder')}
               value={username}
               onChange={(e) => setUsername(e.target.value)}
               disabled={loading}
@@ -236,7 +236,7 @@ export default function AuthOnboarding({ onAuthenticated }: AuthOnboardingProps)
         </button>
         <a href="#help" className="btn-icon-text link-sec">
           <HelpCircle size={18} />
-          Help
+          {t('auth.help')}
         </a>
       </div>
     </div>
diff --git a/client/src/components/LogEntryEditor.tsx b/client/src/components/LogEntryEditor.tsx
index a1aff07..da227ef 100644
--- a/client/src/components/LogEntryEditor.tsx
+++ b/client/src/components/LogEntryEditor.tsx
@@ -704,7 +704,7 @@ export default function LogEntryEditor({ entryId, logbookId, onBack }: LogEntryE
         <div className="form-card">
           <div className="form-header">
             <FileText size={20} className="form-icon" />
-            <h3>Travel Details</h3>
+            <h3>{t('logs.travel_details')}</h3>
           </div>
           <div className="form-grid">
             <div className="input-group">
@@ -941,7 +941,7 @@ export default function LogEntryEditor({ entryId, logbookId, onBack }: LogEntryE
 
           {/* Add New Event Form Sub-Card */}
           <div className="member-editor-card glass">
-            <h4 style={{ margin: '0 0 16px 0', color: '#fbbf24' }}>Add Event Log Record</h4>
+            <h4 style={{ margin: '0 0 16px 0', color: '#fbbf24' }}>{t('logs.add_event')}</h4>
             
             <div className="form-grid mb-4">
               <div className="input-group">
diff --git a/client/src/i18n/locales/de.json b/client/src/i18n/locales/de.json
index a53e482..8487436 100644
--- a/client/src/i18n/locales/de.json
+++ b/client/src/i18n/locales/de.json
@@ -21,7 +21,21 @@
       "recovery_warning": "WICHTIG: Schreiben Sie diese 12 Wörter auf. Wenn Sie Ihren Passkey und diese Wörter verlieren, können Ihre Daten nicht wiederhergestellt werden.",
       "confirm_recovery": "Ich habe die Wörter aufgeschrieben",
       "status_logged_in": "Angemeldet",
-      "status_logged_out": "Abgemeldet"
+      "status_logged_out": "Abgemeldet",
+      "copied": "Kopiert!",
+      "copy_phrase": "Schlüssel kopieren",
+      "enter_recovery": "Wiederherstellungsschlüssel eingeben",
+      "recovery_fallback_warning": "Ihr Passkey wurde erfolgreich authentifiziert, aber Ihr Gerät unterstützt keine hardwarebasierte Schlüsselableitung. Geben Sie Ihren 12-Wörter-Wiederherstellungsschlüssel ein, um Ihr Logbuch zu entschlüsseln.",
+      "recovery_placeholder": "Geben Sie Ihren aus 12 Wörtern bestehenden Wiederherstellungsschlüssel getrennt durch Leerzeichen ein...",
+      "back": "Zurück",
+      "decrypting": "Entschlüsselung...",
+      "decrypt_logbook": "Logbuch entschlüsseln",
+      "error_incorrect_recovery": "Falscher Wiederherstellungsschlüssel. Entschlüsselung fehlgeschlagen.",
+      "error_decryption_failed": "Entschlüsselung fehlgeschlagen. Bitte überprüfen Sie Ihren Wiederherstellungsschlüssel.",
+      "or_register": "oder Registrieren",
+      "username_placeholder": "Benutzername / Skippername",
+      "processing": "Verarbeitung...",
+      "help": "Hilfe"
     },
     "sync": {
       "status_synced": "Synchronisiert",
@@ -54,6 +68,8 @@
     "logs": {
       "title": "Logbuch-Journal",
       "new_entry": "Neuer Reisetag",
+      "travel_details": "Reisedetails",
+      "add_event": "Neuen Logbucheintrag hinzufügen",
       "date": "Datum",
       "day_of_travel": "Tag der Reise / Reisetag",
       "departure": "Start-Hafen (Reise von)",
diff --git a/client/src/i18n/locales/en.json b/client/src/i18n/locales/en.json
index 0c66d03..f3d98c7 100644
--- a/client/src/i18n/locales/en.json
+++ b/client/src/i18n/locales/en.json
@@ -21,7 +21,21 @@
       "recovery_warning": "IMPORTANT: Write down these 12 words. If you lose your Passkey and these words, your data cannot be recovered.",
       "confirm_recovery": "I have written down the recovery phrase",
       "status_logged_in": "Logged in",
-      "status_logged_out": "Logged out"
+      "status_logged_out": "Logged out",
+      "copied": "Copied!",
+      "copy_phrase": "Copy Phrase",
+      "enter_recovery": "Enter Recovery Phrase",
+      "recovery_fallback_warning": "Your Passkey authenticated successfully, but your device does not support hardware key derivation. Enter your 12-word recovery phrase to decrypt your logbook.",
+      "recovery_placeholder": "Enter your 12-word recovery phrase separated by spaces...",
+      "back": "Back",
+      "decrypting": "Decrypting...",
+      "decrypt_logbook": "Decrypt Logbook",
+      "error_incorrect_recovery": "Incorrect recovery phrase. Decryption failed.",
+      "error_decryption_failed": "Decryption failed. Please check your recovery phrase.",
+      "or_register": "or register",
+      "username_placeholder": "Username / Skipper Name",
+      "processing": "Processing...",
+      "help": "Help"
     },
     "sync": {
       "status_synced": "Synced",
@@ -54,6 +68,8 @@
     "logs": {
       "title": "Logbook Journal",
       "new_entry": "New Travel Day",
+      "travel_details": "Travel Details",
+      "add_event": "Add Event Log Record",
       "date": "Date",
       "day_of_travel": "Day of Travel",
       "departure": "Departure Port (von)",