Vintage Royal Navy Ship Cat Triptych Poster

{
  "type": "vintage illustrated educational triptych poster",
  "theme": "true historical animal fact about a Royal Navy ship cat",
  "overall_style": "warm sepia-toned hand-drawn storybook engraving, highly detailed crosshatching, aged parchment background, dark wood interiors, nautical objects, whimsical but realistic tabby cat anatomy, museum-print composition",
  "title_banner": "[TRUE & PECULIAR]",
  "layout": {
    "format": "wide horizontal poster with three equal framed panels across the top and one long caption plaque across the bottom",
    "panel_count": 3,
    "top_panels": [
      {
        "label": "1. OFFICIAL CREW MEMBER",
        "position": "left",
        "scene": "A proud tabby ship cat in a Royal Navy captain-style peaked hat sits at a wooden desk inside a cramped ship cabin, holding a white feather quill and presenting a parchment crew list. The desk contains a mug labeled 'H.M.S. AMETHYST' with an anchor, a brass spyglass, an ink bottle labeled 'INK', coins, rope, nautical tools, and a porthole in the background. A wall sign reads 'LOYAL BRAVE AND PURR-FESSIONAL'. The parchment headline reads 'SHIP'S MANIFEST H.M.S. AMETHYST CREW LIST' with a handwritten list of crew names and ranks."
      },
      {
        "label": "2. DUTY WITH DISTINCTION",
        "position": "center",
        "scene": "The same tabby ship cat, still wearing the naval cap, sits upright in a wooden ship storeroom filled with barrels, hanging pans, lanterns, shelves, and warm lamplight. The cat raises one paw as if commanding or blessing a gathering of ship mice. Exactly 7 visible mice are present: one standing mouse holding a tiny white flag near the cat, two mice sitting on a shelf behind it, one mouse at lower left looking up, one mouse in the lower center foreground, one mouse at lower right foreground, and one small mouse near the standing flag-bearer. The mood is humorous and ceremonial."
      },
      {
        "label": "3. WELL EARNED REST",
        "position": "right",
        "scene": "The tabby cat sleeps curled on a naval officer's peaked cap on a map-covered desk in a moonlit captain's cabin. A warm brass lantern glows on the right, a window shows a dark blue night sky with a full moon, and the walls hold a framed sailing ship picture and nautical decor. A partly visible sleeping naval officer rests in the background with the face obscured by a plain brown square. A small medal or tag near the cat reads 'DICKIN MEDAL 1949'."
      }
    ],
    "bottom_caption": {
      "position": "full-width parchment strip beneath panels",
      "text": "[TRUE FACT #3: Cats served officially on Royal Navy ships until 1975. Simon of HMS Amethyst survived a battle, boosted crew morale, and was awarded the animal equivalent of the Victoria Cross.]",
      "decoration": "anchor icons at both ends and thin ornamental border"
    }
  },
  "subject": {
    "animal": "[brown tabby cat]",
    "name": "[Simon of HMS Amethyst]",
    "costume": "Royal Navy officer cap with gold insignia and dark naval trim",
    "expression_progression": "authoritative and proud in panel 1, dignified and commanding in panel 2, peaceful and exhausted in panel 3"
  },
  "color_palette": "aged cream parchment, walnut brown wood, brass gold, ink black, navy blue accents, warm lantern orange, muted moonlit blue",
  "rendering_instructions": "Make all text appear printed or hand-lettered on parchment labels, preserve the three numbered panel labels exactly, use consistent character design for the cat across all panels, emphasize charming historical oddity and naval authenticity, add subtle paper grain, rounded black panel borders, and antique poster wear."
}