Pinisi Boat Hull Structure
In prior years, teak may have been one of the preferred woods to use for the structure, although locally it is considered rather soft and inferior. Since teak is not especially favored and is actually no longer plentiful, other tropical hardwoods are used. Presently in Indonesia, Ironwood and Bangkirai are preferred for boat structures. Obtained from the low land forests of Kalimantan, Ironwood is locally called Kayu Ulin (eusideroxylon zwageri). One of the hardest woods in Indonesia, Ironwood has a specific gravity of 0.88 to 1.19...! Although quite heavy, it has excellent physical properties and is not vulnerable to termites or other tropical wood eating insects or fungus. Kayu Bangkirai (shorea leavifolia) is also highly favored. Slightly less heavy than Ulin, Bangkirai makes excellent planking, decking, stringers, and upper structure. Many other tropical woods are locally used, most of which have proven to be inferior for one r...