I didn't find any books. I did find these credentials and a short article on the evolution of boat types. * © 2004 Horst H. Liebner, Malayologist, Expert Staff of the Agency for Marine and Fisheries Research, Department of Marine Affairs and Fisheries of the Republic of Indonesia, since 1987 working on ethnography and history of South Sulawesi’s maritime cultures. Note that it's "Horst," not "Horts."

Lee