Shipping Container Seaworthy Certification (CSC)
Add a CSC seaworthy certification to your container purchase through YES Containers. Available on Cargo Worthy and One-Trip units, certification is handled before delivery by a licensed surveyor and results in a CSC plate affixed to the container — verifying it meets international safety standards for ocean transport. Pricing varies by location and surveyor, typically ranging from $150 to $550.
What Is a Seaworthy Certification?
A seaworthy — or CSC — certification confirms that a shipping container meets the structural and safety standards required by the International Convention for Safe Containers (CSC) for use in international ocean freight. Without a valid CSC plate, containers cannot be legally loaded onto vessels for international shipping.
The certification is issued by a licensed marine surveyor who physically inspects the container and verifies it meets the required standards. YES Containers coordinates this process on your behalf before the container is delivered, with the CSC plate affixed prior to dispatch.
- Structural integrity — walls, roof, floor, and corner castings
- Door operation, seals, and hardware
- Maximum gross weight and stacking load compliance
- Racking and forklift test compliance verification
- Physical CSC plate affixed with certification data
- Typically adds 3–5 business days to the delivery timeline
What the CSC Plate Records
The CSC plate is a permanent physical plaque affixed to the container. It is required by the International Convention for Safe Containers for any container entering international trade and must be current and valid at the time of vessel loading.
Which Containers Qualify and What Does It Cost
Seaworthy certification is an add-on to a container purchase from YES Containers — not a standalone service. Eligibility is limited to container grades that can realistically pass a CSC inspection.
Eligible Container Grades
Certification is available on Cargo Worthy and One-Trip containers purchased through YES Containers. WWT and as-is grade containers are not eligible — their structural condition does not meet CSC inspection standards.
- One-Trip containers — near-new, ideal starting point for certification
- Cargo Worthy (CW) containers — structurally sound, eligible for CSC inspection
- Available only when purchased through YES Containers
- Service subject to availability by location — confirm when ordering
- Adds approximately 3–5 business days to delivery timeline
Pricing — Set by the Surveyor
Certification pricing is not fixed — it is determined by the licensed surveyor in your area. YES Containers coordinates the process and provides the surveyor's pricing as part of your full order quote.
Typically from
$150
Up to
$550
Exact cost depends on your location, local surveyor rates, and container size. Contact YES Containers for a location-specific quote that includes the certification fee.
How Seaworthy Certification Works with Your Order
Certification is arranged as part of your container order — not as a separate engagement. YES Containers coordinates the surveyor and the timing so the container arrives with the CSC plate already in place.
Request Certification When Ordering
When getting a quote for a Cargo Worthy or One-Trip container, inform YES Containers that you need CSC certification added to the order. A specialist confirms availability in your area and provides an updated quote that includes the surveyor fee.
Surveyor Inspects and Certifies
YES Containers coordinates a licensed marine surveyor to inspect the container before dispatch. The surveyor verifies structural integrity, door hardware, weight ratings, and compliance with CSC standards. The CSC plate is affixed to the container once the inspection passes.
Container Delivered with CSC Plate Installed
The container arrives at your site with the CSC plate already installed and the certification documentation included. The 3–5 business day certification process is worked into your delivery timeline — the container ships once certification is complete.
Who Needs a Seaworthy Certification
Most container buyers don't need a CSC certification — it's a requirement specific to ocean freight and compliance scenarios. If your container will be used for on-site storage, a site office, or a residential conversion, certification is not required.
You need certification when the container must legally enter international shipping, when a shipper or port authority requires documented compliance, or when you're reselling or leasing units that need to re-enter service with verifiable certification.
- On-site storage — no certification required
- Site offices and workspace conversions — no certification required
- Residential ADUs and container homes — no certification required
- Domestic ground transport only — no CSC plate required
International Ocean Freight
Any container being loaded onto a vessel for international shipping requires a valid, current CSC plate. Expired or absent certification results in rejection at the port of loading.
Freight Forwarders and Shipping Companies
Companies sourcing containers for charter, lease, or intermodal operations often require CSC certification as a baseline condition of use in their logistics chains.
Container Resellers and Traders
Buyers purchasing containers to resell or re-enter into service may require certification to maintain or restore the container's value for buyers who need compliant units.
Compliance-Sensitive Industries
Certain regulated industries — military logistics, hazmat transport, and some government procurement — require CSC-certified containers regardless of whether they actually travel by sea.
Request Seaworthy Certification With Your Container
Tell YES Containers you need a CSC certification when requesting your quote. A specialist will confirm availability in your area, provide the surveyor fee for your location, and adjust the delivery timeline to account for the 3–5 business day inspection window.
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From delivery and Pay-on-Delivery to rental, modifications, rush delivery, and container moving — YES Containers supports every stage of container ownership.
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$150 extra for a 5–7 business day target versus the standard 10 days. Fee refunded if the window is missed.
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