These vessels where built exclusively for racing outrigger version of the double outrigger jerangkat. Therefore it can be concluded that it is not possible that an outrigger vessel, designed to derive all its stability from outriggers could be built of a size large enough carry the proposed passengers, provisions and cargo.The outriggers shown on the Borobudur ships are not like the long outriggers of the large outrigger vessels of the 20th century. Such a vessel, designed with a long narrow hull would scarcely have the capacity to carry the proposed passengers, provisions and cargo. They normally depended entirely 1.3 tonnes would be required by an outrigger vessel on outriggers for stability and sometimes made a little more than14m long. Extrapolating from that calculation, outriggers of about 300mm diameter with buoyancy of about length of the hull. (0.0625 x 0.0625 x p x 9m = 0.1103m) Using these proportions and assuming that the largest bamboos would have diameter about 200mm, the largest possible outrigger canoe is about 10m long. This leads to engineering problems as size increases: if the length of the outriggers increases in proportion to the hull length, the long projection of the outriggers forward of the forward outrigger boom is increasingly susceptible to breaking off when pitching into a headsea.A Selat Badung jukung with a 6m long hull has outriggers 9m long, mean diameter at least 125mm and buoyancy of about 100kg. In other words the diameter of the outriggers must increase in proportion to an increase in hull length. There are five bas-relief depictions of large vessels with outriggers in the galleries of Borobudur. Kata “ padewakang, paduwakang” (Sulawesi) dan “ paduwang” (Madura), mempunyai akar kata wa, wangka, waga, wangga, dan bangka dari bahsa Austronesia. Osozawa Katsuya mengaku jenis perahu pakur adalah salah satu bentuk evolusi perahu bercadik yang dibuat orang-orang Austronesia, yaitu penggunaan papan dek sebagai penutup lambung.Informasi yang dihimpun SI, saat pelaut, nelayan, tukang perahu Mandar bersinggungang dengan teknologi pelayaran orang Eropa (karena banyak pelaut Mandar yang berlayar ke Makassar, Surabaya, hingga Tumasik/Singapura), orang Mandar mengadopsi teknik layar segitiga orang Eropa (yang juga terjadi pada perahu dagang orang Makassar). Sebab jenis layarnya masih menggunakan jenis layar tanjaq, jenis layar khas Austronesia.Peneliti perahu dari Jepang Prof. Menurut dia, Perahu Pakur adalah jenis perahu kuno. Meski bentuknya segitiga, tapi teknik penggunaan dan konstruksi tiang layarnya berbeda dengan sandeq,” katanya.
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