After finding that first sunken ship back in 1987, he collected information about lost vessels wherever he could, and did research into old porcelain.
一九八七年發現古沉船後，他就各方搜羅有關沉船的資料，潛心研究古陶瓷，常拿著從沉船取出的古陶瓷器，到處找人鑑定。