Chialoup (or chaloup) was a type of sloop used in East Indies. It was the result of western (Dutch) and Nusantaran (Indonesian) technologies and techniques. Many of these "boat-ship" is produced at VOC shipwrights in Rembang and Juwana, in which the majority of the workers were local Javanese. Chialoup is used by Dutch East India Company and private merchant-sailor of western and Nusantaran origin.
The chialoup sails mimics the one used in sloop, which is a combination of square sails with a fore-and-aft type sails installed extensively. The boats are usually single-decked with one mast, sometimes added with a bowsprit. While most of these chialoups use a European-style center steering wheel, some of them are equipped with two side (quarter) rudders, a characteristic of a Nusantaran boat. The length is between 15 and 25 m, with cargo bay reaching almost 6 m long. Depending on the size, crewed between 20 and 40 people. The load capacity was 40-80 last (72.4-144.8 metric tons). In the syahbandar's (harbourmaster) record of Malacca there is even a chialoup carrying up to 200 t of cargo and a crew of 75 people. Chialoups on average were armed with 4 cannons, 1 swivel gun, and 7 snaphaunces.
In the era after 1820 chialoup gradually disappeared from "List of Ships and Sea Vehicles from East Indies" which is periodically published by colonial government of Dutch East Indies, and the term chialoup in newspapers becoming more rarely refer to trading boats, instead it is categorized as western-styled sloops.
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