Minjerribah · North Stradbroke Island · Quandamooka Country

Two working models of one island

The Straddie Twins are two models of Minjerribah that run in a web browser. They use public records: tides, boats, roads, the fresh water under the sand. They test whether the island gets through a bad day.

Why they exist Terminal to city Open a twin now
First build · a living world Second build · numbers first RealModelledProposedNot known

Copernicus Sentinel-2 photo · 13 July 2026 · hills stretched five times · sources

The short version

The ladder starts at the island

A ladder runs from the Gumpi jetty to a civilisation that keeps the lights on through anything. The plan calls that joyful responsible abundance.

A twin starts with what the island publishes. Ferry timetable, tide tables, roads, council decisions. The freshwater lens, the rain water sitting in the sand. Put a clock on it. Run a day. Then break it.

Fly around the first build: residents, whales, a barge, a council in tray. The second build started with the numbers. It answers one question: can a car get off the island today?

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parts running, first build
parts list
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parts running, second build
parts list
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parts designed, not written
parts list

Two doors

First build opening board: date, tide, light, crossing, each marked real or simulated.
First build

Minjerribah Living Twin

An island you fly around in a web browser, about 90 parts. Click anything to see where its numbers come from.

 Second build ferry page, asking whether a car can get off the island.
Second build

second-island

Numbers first. Every fact gets two dates. The ladder says so when nobody knows a number.

The walk

Thirteen short pages, in order

Arrow keys move between them.

  1. Why the twin exists. One threat at a time.
  2. Terminal to city. Car park, tunnel loop, reefs.
  3. The island. Three townships, no bridge, one barge.
  4. What a twin is. Real, modelled, proposed, not known.
  5. Why two builds. What the first build taught.
  6. Inside the first build. Screens, bar, cameras, boards.
  7. Every part. Filter by area and status.
  8. Where the numbers come from. Packs, feeds, receipts, wanted list.
  9. Inside the second build. Two dates on every fact. The ladder.
  10. The ferry page. One question, one checkable answer.
  11. Open them yourself. Live links, one command, your machine.
  12. Built, designed, not built. The ledger across both.
  13. Glossary. Every term, one sentence.

Minjerribah is Quandamooka Country. Both twins acknowledge the Quandamooka People as the Traditional Owners of Minjerribah and of the lands and waters of Moreton Bay, and pay respect to Elders past and present. Both are built from public records only, with no cultural material.