Underwater measurements and adjustment of the Santo Antonio de Tanna keelson

Author/s Yousif Abdul-kadhim Mousa

Year of publication 2020

Report Number: No. 337

Santo Antonio de Tana was a Portuguese ship that sank off the coast of Mombasa, Kenya, in 1698. Throughout the excavations of the shipwreck in (1978), different surveying measurements were taken. Beside the number of underwater images of the remains of the shipwreck, there are also number of physical underwater observations taken by a Tape. A 3D photogrammetric model from these images has been already created in 2018 using PhotoScan software. The goal of this project is to build a 3D reconstruction Model from the underwater measurements by trilateration procedure and the least squares adjustment. In addition, conducting a comparison between the trilateration 3D Model with the photogrammetric model as an accuracy assessment.