Further examination showed that the pipe was heavily corroded at the section where the fracture took place. Also the starboard bilge sounding pipe of No. 1 cargo hold was corroded at the thread section and the closing cap was missing.

• 进一步检查发现测深管的断裂部位已经被严重腐蚀。1号货舱的右污水井测深管的螺纹部分也被腐蚀而且管口盖遗失。