|Native name||Selat Gaspar (Indonesian)|
|References||Selat Gaspar: Indonesia National Geospatial-Intelligence Agency, Bethesda, MD, USA|
The strait is named after a Spanish captain, who passed through it in 1724 en route from Manila to Spain.
The western branch, between Pulo Leat and the southeastern part of Banca, is often called Macclesfield Strait. The eastern branch, between Middle Island, and Long Island, near Billiton, is generally called Clements' Strait, after Captain Clements, who commanded the fleet from China that went through it in July 1781.
Over time, the strait came to be part of the main shipping route between Singapore and the Sunda Strait (which separates Sumatra from Java, and is an entrance to the Indian Ocean). The waters in and around the strait had many navigational hazards, and the strait itself, although frequently used, was considered to be especially perilous. According to the Great Britain Hydrographic Department's The China Sea Directory, vol. 1 (1878):
"Many fine ships have been lost in Gaspar strait; not a few on the Alceste reef, from wrongly estimating their distance from the land; but the majority of instances from causes which might have been guarded against by the exercise of due care and judgment."
In 1854, the British Admiralty first issued an Admiralty chart of the strait. It was based on surveys conducted by the United States Navy. The chart was continually updated, most notably following surveys conducted by W. Stanton, a Royal Navy a sailing master, in 1861, and with the assistance of Dutch charts, prepared by the then colonial ruler of the then Dutch East Indies (now Indonesia).
In 1998, fishermen discovered a block of coral encrusted with pieces of ceramic, at the depth of about 16 meters. From a large jar they removed several bowls intact. These divers by chance had just made the greatest underwater archeological discovery ever made in Southeast Asia: a 9th-century Arab dhow, loaded with over 60,000 gold and silver objects, and manufactured ceramics under the Tang dynasty. The boat and its cargo, dubbed Belitung shipwreck, testified that Tang China was producing mass-produced commercial items that it exported by sea. Arab sailors were clearly traveling along the maritime silk route, trading at a great scale and over long distances. The port of departure and the destination of the dhow are unknown. Most scholars believe dhow was heading to the Middle East, probably from Guangzhou (Canton), the largest port on the Silk Road. Many Arabs and Persians lived in Guangzhou in the 9th century. Among the tens of thousands of bowls found in the wreck, one bore this inscription: The sixteenth day of the seventh month of the second year of the reign of Baoli, or 826 apr. The mass-produced nature of the cargo and the geographical diversity of its production suggest that it was an export item made to order.
- Horsburgh, James (1809–1811). Directions for Sailing to and from the East Indies, China, New Holland, Cape of Good Hope, and the Interjacent Ports. 2 vols. Vol. 2. London: Printed for the author and sold by Black, Parry, and Kingsbury. pp. 119 and 121. ISBN 9781108077293. This article incorporates text from this source, which is in the public domain.
- "China Sea Gaspar Strait Surveyed by Officers of the United States Navy 1854". Barry Lawrence Ruderman Map Collection. Stanford University. Retrieved 19 April 2022.
- "Treasures of the Tek Sing". Archived from the original on 24 January 2008. Retrieved 3 August 2019.