Compare one-trip and wind and water tight (WWT) shipping containers on condition, appearance, and long-term value so you can pick the right unit for storage, modification, or a jobsite. What One-Trip and WWT Really Mean When you shop for a shipping container, you will see two labels again and again: one-trip and WWT, which stands for wind and water tight. These are condition grade... https://newportshippingcontainers.com/