Glossary: Wind and Watertight (WWT)
Wind and Watertight (WWT): Definition, Criteria, and Applications
The classification Wind and Watertight (WWT) refers to a widely used condition standard for secondhand shipping containers primarily utilized for stationary on-site storage. A WWT container guarantees that stored goods are fully protected from weather elements such as rain, snow, wind, and pests, though it typically no longer holds an active certification for international freight transport.
Key Criteria of a WWT Container
A container in WWT condition fulfills the essential baseline requirements for weatherproof storage:
- Complete Weather Tightness: Walls, roof, and floor panels are free of holes and cracks. When the doors are closed, no daylight penetrates the interior (verified via standard “light test”).
- Intact Door Gaskets: The surrounding rubber seals on the cargo doors fit tightly, preventing driving rain and drafts from entering.
- Functional Locking Hardware: Doors open and close properly and can be reliably secured with padlocks or lockboxes.
- Dry, Sound Floor: The plywood floor is solid, dry, and capable of supporting regular storage loads.
- No valid CSC Plate: WWT containers typically have an expired CSC certification and cannot be loaded onto container vessels or standard commercial freight lines without recertification.
Common Wear and Cosmetic Imperfections
WWT is strictly a functional condition grade. Compared to newer or CSC-certified units, WWT containers routinely exhibit noticeable cosmetic and superficial wear:
- Surface rust and weathering patina
- Noticeable dents, dings, and scratches on corrugated side panels
- Color variations from prior panel patches or weld repairs
- Visible wear and surface markings on the wooden floor
Note: As long as these blemishes do not compromise structural weather tightness or baseline security, the container fully qualifies as WWT.
Direct Comparison: WWT vs. CW
| Feature | Wind and Watertight (WWT) | Cargo Worthy (CW) |
|---|---|---|
| Primary Use Case | Stationary storage | Active transport / Export / Freight |
| Wind & Water Tight | Yes | Yes |
| CSC Certification for Sea Freight | No (typically expired) | Yes (certifiable upon survey) |
| Structural Capacity | FRated for static storage | Certified for full payload & ocean stacking |
| Price Point | Most cost-effective watertight grade | Higher (due to transport eligibility) |
Weitere Informationen:
→ Cargo Worthy (CW)
Typical Applications
- Construction Sites & Tool Storage: Secure, weatherproof depot for machinery, power tools, and building supplies.
- Commercial & Yard Storage: Cost-efficient expansion of inventory and equipment storage on corporate premises.
- Agriculture & Farming: Safe storage for animal feed, tools, and seasonal supplies protected from dampness and vermin.
- Private & Self-Storage: Reliable storage space for tires, furniture, sports equipment, or as a heavy-duty alternative to a garden shed.
Are You Looking for a Container with a Valid CSC Plate or a Used Storage Container?
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