Big, Hollow and Easy to Distort
A large tank or vessel hides its fragility behind its size. The shell is often thin relative to its diameter, so without correct cradling and, where needed, internal support, it goes out of round under its own weight, under stacking loads or under the racking of a sea voyage, and an ovalised vessel may never seat its internals or flanges properly again. The machined nozzle and manway faces are precision sealing surfaces that corrode and knock easily, internal linings of glass, rubber or coating are vulnerable to impact and condensation, and bright internal surfaces flash-rust if humid air is sealed inside.
BENZ protects a vessel as a shape as much as a surface. It is cradled on engineered shipping saddles, designed on the same Zick-analysis principles used for the vessel's own supports so the load is carried where the shell can take it, and vertical vessels get purpose-built temporary horizontal saddles. Where wall thickness demands it the shell is internally supported to hold it round; nozzle and manway faces are filmed and fitted with bolted protectors; the interior is dosed with VCI and desiccant and sealed dry; and linings are cushioned against impact. For deck cargo the vessel is weatherproof-wrapped against rain and salt spray and secured to a heat-treated, ISPM-15 cradle rated to its tonnage, so it arrives round, dry and ready to install.