Deck plans for Traveller games
Made by an AI agent: it wrote the tool that draws these maps and this page. The maps are drawn by code on a grid, not by an image generator.
Traveller deck plans are drawn on 1.5 m squares, and two squares of deck, floor to ceiling, make one displacement ton (Traveller Wiki: Deck Plan). These free plans use the same grid. Read each square as 1.5 m and the table below gives you each one's size in tons before you open it.
The ICV Halcyon Drift, upper deck: 380 squares, and 676 over both decks, so about 338 tons of deck.
The free plans by size
| Plan | Decks | Squares | Deck space |
|---|---|---|---|
| Wren-class shuttle | 1 | 77 | ~38 t |
| Lantern shuttle (derelict) | 1 | 112 | ~56 t |
| ISV Osprey (derelict corvette) | 1 | 189 | ~94 t |
| ICV Meridian (corvette) | 1 | 300 | ~150 t |
| MSV Cassandra (derelict) | 1 | 382 | ~191 t |
| Vesper Station | 2 | 536 | ~268 t |
| MSV Tamarind (derelict freighter) | 2 | 557 | ~278 t |
| Corvid Station (derelict) | 2 | 590 | ~295 t |
| ICV Halcyon Drift (trader) | 2 | 676 | ~338 t |
| Threshold Station | 2 | 680 | ~340 t |
| Anvil-class bulk freighter | 2 | 847 | ~424 t |
Squares are every floor square drawn: rooms and corridor, on all decks. Tons are squares รท 2. That is the space the plan draws, not a hull rating: fuel tankage and anything else not drawn as a room would come on top.
Each plan has its own page with the PNG, a Universal VTT file (.dd2vtt) with walls, doors and lights, a print PDF and a room key. There is also a new derelict every day, with its story, hazards, log fragments and salvage room by room. All CC0: use them in a home game, a stream or a published adventure, no credit needed.
Setting the scale
In the editor, the 1 square = box in the Plan panel is a label: type 1.5 m and the full version’s print PDF says so on every sheet. The grid itself doesn’t change, so every plan works at either scale.
In Foundry VTT, the scenes in the free module come set to 5 ft per square. Open a scene’s configuration and, under Grid, set the scale to 1.5 m, and Foundry’s ruler measures in metres. Roll20 and Owlbear Rodeo have the same setting on the page or map: Roll20 import, Owlbear import. Paper: print the PDF at 1 inch per square.
Your own ship
The free demo is the whole editor in the browser: draw rooms square by square, or press generate for a shuttle, corvette, freighter or station, intact or derelict, and it writes a room key with it. To size a ship to a tonnage, draw twice as many squares as the tons you want. The demo saves a PNG, and Save with story puts the ship’s story and every numbered room beside the map in one image. More on the generator, stations, derelicts.
The full version, $12 on itch.io, exports the finished ship as a .dd2vtt with walls, doors and lights, and a print PDF, without the watermark, and generates whole fleets at once. One HTML file that works offline.
Honest notes
These maps are system-neutral: rooms, walls, doors and lights, no ship design stats and no rules text. They were not built to Traveller’s ship design rules, so a plan will not match a published hull’s component list. It gives you a layout to fight and explore in, and its size in tons so you can pick one that fits.
Bulkhead is made by Bananafest Destiny and is not affiliated with or endorsed by Far Future Enterprises or Mongoose Publishing. Traveller is a trademark of Far Future Enterprises; Foundry VTT, Roll20 and Owlbear Rodeo are their owners' trademarks. Game names are mentioned only to say what the maps work with. The code and this page were written by an AI assistant under human direction.