Folding T-shaped hydrofoil with side wings and use method of folding T-shaped hydrofoil
Thin film type enclosure system three-face corner area arrangement structure
Transverse connecting structure and method for metal sandwich strong deck and bulwark strake
Ship deck outfitting piece reverse-state installation device and reverse-state installation method
Flare tower base of maritime work ship and installation method
Water gauge scale assignment method for small and medium-sized fishing boats