CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

Groper

steam dredge

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionDec 2, 2025
Entity authorityQ124650538 ↗
Source-derived summary

The Groper was a ship commissioned by the Queensland Government in 1875 to dredge rivers. It was built by Thomas Wingate & Company of Whiteinch, Partick, Scotland, and was a large self-propelled bucket ladder dredge, measuring 160 feet in length, weighing 359 tons, and powered by a 75-horsepower steam engine.

Construction and journey

Due to its relatively low power, the Groper was rigged for sail to undertake the journey from Scotland to Australia via the Suez Canal and Torres Strait. Its final sea trial was conducted on March 26, 1876 and it departed from Clyde, Glasgow, on April 1, 1876.

Operational challenges

In January 1877, the Groper was deemed ready for work, but operational challenges arose. The dredge could not operate at full capacity due to incomplete and unavailable punts designed to transport the dredged silt. Instead, smaller punts were temporarily used, and the Groper operated at less than half capacity. Its initial dredging operations focused on the Pinkenba Flats on the north side of the Brisbane River near its entry to Moreton Bay.

Accident and conflict

In May 1877, the Groper experienced an accident, sparking a public conflict between the Queensland Government and Thomas Wingate & Company. Investigations revealed a financial conflict of interest involving the Glasgow engineer, James Deas, the project overseer.

Editorial summary

The public source identifies “Groper” as steam dredge. This brief keeps that definition visible, then builds a research path around Groper, steam and dredge.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—1875, 1876, 1877—that can be checked directly. The selected authority fields contribute no independent date. Its value is orientation rather than verdict, with Groper, steam and dredge providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Groper”, the useful work is to connect “steam dredge” to the records capable of establishing context and consequence.

Evidence profile

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Dec 2, 2025. The linked authority identifier is Q124650538. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1875, 1876 and 1877.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Groper”, its source revision and the description used here.
  2. Expand the search: follow Groper primary sources, Groper archive and Groper research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Groper”?
  2. What terminology or title could unlock a more precise catalogue search?
  3. Which institution is responsible for the underlying evidence?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Groper” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.