Pedra Branca, Singapore
territory of Singapore

Pedra Branca (European Portuguese: [ˈpɛðɾɐ ˈβɾɐ̃kɐ]), also known as Batu Putih (Malay: [batu puteh]), is an outlying island and the easternmost point of Singapore. The name of the island, which is Portuguese for "white rock", refers to whitish guano deposited on the rock. The island consists of a small outcrop of granite rocks with an area of about 8,560 square metres (0.00856 km2) at low tide. During the low water spring tide it measures, at its longest, 137 metres (449 ft) and has an average width of 60 metres (200 ft). Pedra Branca is situated where the Singapore Strait meets the South China Sea, and so is considered a maritime landmark of the eastern entrance of the Singapore Strait.
There are two maritime features near Pedra Branca. Middle Rocks, under the sovereignty of Malaysia, consists of two clusters of small rocks about 250 metres (820 ft) apart situated 0.6 nautical miles (1.1 km; 0.7 mi) south of Pedra Branca. South Ledge, which is 2.2 nautical miles (4.1 km; 2.5 mi) to the south-south-west of Pedra Branca, is a rock formation visible only at low-tide.
Pedra Branca was known to sailors for centuries. It was originally within the territory of the Johor Sultanate, which was founded in 1528, and remained under the new Sultanate of Johor while under the British sphere of influence following the signing of the Anglo-Dutch Treaty of 1824 between the United Kingdom and the Netherlands.
“Pedra Branca, Singapore” enters the record as territory of Singapore. Crown Archives preserves that source wording while asking what Pedra, Branca and Singapore can confirm, complicate or overturn.
Why this record matters
“Pedra Branca, Singapore” is worth following because a concise public description often conceals a longer documentary argument. Here, Pedra, Branca and Singapore provides the most credible route into that argument.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 2, 2026. The linked authority identifier is Q1190558. VIAF identifies the subject as 315167067. The Library of Congress control number is sh2010014179. Authority coordinates are 1.330, 104.406. None of the 3 selected statements returned an explicit reference. The first chronological checks are 1528 and 1824.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. 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.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Pedra Branca, Singapore”, its source revision and the description used here.
- Expand the search: follow Pedra Branca, Singapore primary sources, Pedra Branca, Singapore archive and Pedra research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Pedra Branca, Singapore”?
- What terminology or title could unlock a more precise catalogue search?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “Pedra Branca, Singapore” 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.