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  <!-- 1. Main Application & Maritime Navigation Suite -->
  <url>
    <loc>https://navchrono.com/</loc>
    <lastmod>2026-11-10</lastmod>
    <changefreq>daily</changefreq>
    <priority>1.0</priority>
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    <xhtml:link rel="alternate" hreflang="ja-JP" href="https://navchrono.com/" />
    <xhtml:link rel="alternate" hreflang="zh-CN" href="https://navchrono.com/" />
    <image:image>
      <image:loc>https://navchrono.com/linkedin-post-bridge-suite.jpg</image:loc>
      <image:title>NavChrono Ship Voyage Calculation &amp; Maritime ETA Suite</image:title>
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  </url>

  <!-- 2. Ship Voyage & ETA Calculator -->
  <url>
    <loc>https://navchrono.com/eta-calculator</loc>
    <lastmod>2026-11-10</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.95</priority>
  </url>

  <!-- 3. Port to Port Sea Distance Calculator & Distance Table -->
  <url>
    <loc>https://navchrono.com/sea-distance-calculator</loc>
    <lastmod>2026-11-10</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.95</priority>
  </url>

  <url>
    <loc>https://navchrono.com/nautical-distance-calculator</loc>
    <lastmod>2026-11-10</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
  </url>

  <!-- 4. Under Keel Clearance (UKC) Calculator -->
  <url>
    <loc>https://navchrono.com/ukc-calculator</loc>
    <lastmod>2026-11-10</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.95</priority>
  </url>

  <!-- 5. Ship Squat Hydrodynamic Calculator -->
  <url>
    <loc>https://navchrono.com/squat-calculator</loc>
    <lastmod>2026-11-10</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
  </url>

  <!-- 6. RTZ & GPX Route Exchange Exporter (IEC 61174 Format) -->
  <url>
    <loc>https://navchrono.com/ecdis-export</loc>
    <lastmod>2026-11-12</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
  </url>

  <!-- 7. Ship Passage Planning Software (SOLAS Ch. V Reg. 34) -->
  <url>
    <loc>https://navchrono.com/passage-planning-software</loc>
    <lastmod>2026-11-10</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
  </url>

  <!-- 8. IMO Resolution A.893(21) Passage Plan Audit & Verification -->
  <url>
    <loc>https://navchrono.com/imo-passage-plan</loc>
    <lastmod>2026-11-10</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.85</priority>
  </url>

  <!-- 9. Major Shipping Lanes & Sea Route Library -->
  <url>
    <loc>https://navchrono.com/routes</loc>
    <lastmod>2026-11-10</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
  </url>

  <!-- 10. Maritime Calculation & Navigation Guides Hub -->
  <url>
    <loc>https://navchrono.com/guides</loc>
    <lastmod>2026-11-10</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.90</priority>
  </url>

  <!-- 11. UN/LOCODE Major Seaport Directory -->
  <url>
    <loc>https://navchrono.com/ports</loc>
    <lastmod>2026-11-12</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.80</priority>
  </url>

  <!-- 12. Legal, Terms of Service, Safety Disclaimer & Privacy -->
  <url>
    <loc>https://navchrono.com/disclaimer</loc>
    <lastmod>2026-11-12</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.75</priority>
  </url>

  <url>
    <loc>https://navchrono.com/terms</loc>
    <lastmod>2026-11-12</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.75</priority>
  </url>

  <url>
    <loc>https://navchrono.com/privacy</loc>
    <lastmod>2026-11-12</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.75</priority>
  </url>

  <!-- 13. AI Crawler Manifests -->
  <url>
    <loc>https://navchrono.com/llms.txt</loc>
    <lastmod>2026-11-12</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.80</priority>
  </url>

  <url>
    <loc>https://navchrono.com/llms-full.txt</loc>
    <lastmod>2026-11-12</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.85</priority>
  </url>

  <!-- 14. PWA Web App Manifest -->
  <url>
    <loc>https://navchrono.com/manifest.webmanifest</loc>
    <lastmod>2026-11-12</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.70</priority>
  </url>
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