Customs Formalities and Regulations for Sea Freight
A guide to worldwide customs rules and regulations when shipping over sea. Compare quotes & rates instantly.
Customs formalities, the legal procedures required by exporting and importing countries, are crucial for international sea freight.
These formalities ensure compliance with trade regulations, collect duties and taxes, and prevent illegal goods movement. They include declaring goods (nature, value, origin, destination), inspecting cargo to verify declarations and compliance, paying applicable duties and taxes, and releasing goods for delivery once formalities are met.
This guide provides comprehensive information on these formalities and regulations for sea cargo, helping you navigate international maritime shipping regulations, ensuring smooth customs clearance with certified brokers and compliant shipping companies. Request multiple quotes for international sea freight now and benefit from expert assistance.
Step-by-Step Guide to Sea Freight for Shippers (Accordions)
This guide provides a detailed walkthrough of the sea freight process using interactive accordions. Click on each step to expand and view the details.
Who: Shipper
What: Contact freight forwarders or carriers to request a quote for your shipment. Provide details about the cargo (type, dimensions, weight), origin and destination ports, desired delivery timeframe, and any special requirements (e.g., temperature control).
Timeline: 1-2 days
Who: Shipper
What: Evaluate quotes and choose a freight forwarder or carrier based on factors like price, transit time, reliability, and services offered. Confirm booking details and agree on terms and conditions.
Timeline: 1-3 days
Who: Shipper (with potential assistance from freight forwarder)
What: Properly package and label cargo for international shipping. Prepare necessary documentation, including:
- Commercial Invoice
- Packing List
- Certificate of Origin
- Bill of Lading (provided by carrier)
- Other documents as required (e.g., insurance certificates, import licenses)
Timeline: 2-5 days
Who: Shipper (or arranged by freight forwarder)
What: Arrange for inland transportation of cargo from your facility to the port of origin (e.g., Shanghai, Ningbo). This may involve trucking, rail, or a combination of modes.
Timeline:
| Scenario | Estimated Timeline |
|---|---|
| China to Europe (Shanghai to Rotterdam) | 2-5 days |
| China to US (Ningbo to Los Angeles) | 3-7 days |
Who: Freight forwarder (or customs broker)
What: File necessary documents and declarations with Chinese customs authorities to clear the cargo for export. This may involve inspections and payment of export duties (if applicable).
Timeline: 1-3 days
Who: Carrier
What: Cargo is loaded onto the vessel and transported to the destination port.
Timeline:
| Scenario | Estimated Timeline |
|---|---|
| China to Europe (Shanghai to Rotterdam) | 30-40 days |
| China to US (Ningbo to Los Angeles) | 15-20 days |
Who: Freight forwarder (or customs broker)
What: File necessary documents and declarations with the importing country's customs authorities to clear the cargo for import. This may involve inspections and payment of import duties and taxes.
Timeline: 2-5 days
Who: Freight forwarder (or arranged by shipper)
What: Arrange for inland transportation of cargo from the destination port to the final delivery address. This may involve trucking, rail, or a combination of modes.
Timeline: Depends on distance and transportation mode (typically 1-7 days within Europe/US).
Who: Carrier (or freight forwarder)
What: Cargo is delivered to the consignee (recipient). Shipper receives confirmation of delivery and finalizes payment with the freight forwarder/carrier.
Timeline: 1-2 days
Sea Transport Regulations
Several international and national regulations govern the sea transport of goods. These regulations cover various aspects of shipping, including safety, security, environmental protection, and liability.
Key regulations that impact sea freight include:
- International Maritime Organization (IMO) Conventions: The IMO sets international standards for maritime safety, security, and pollution prevention. These conventions include the Safety of Life at Sea (SOLAS) Convention and the International Convention for the Prevention of Pollution from Ships (MARPOL).
- National Maritime Regulations: Individual countries also have their own regulations governing shipping activities within their territorial waters and ports. These regulations may cover aspects such as pilotage, port security, and customs procedures.
- Cargo-Specific Regulations: Certain types of cargo, such as hazardous materials, chemicals or perishable goods, are subject to specific regulations regarding their handling, storage, and transportation.
Required Documents for Sea Transport
Proper documentation is essential for smooth and compliant sea freight operations. The following documents are typically required:
- Bill of Lading (B/L): This is the most important document in sea freight. It serves as a contract of carriage between the shipper and the carrier, a receipt for the goods, and a document of title.
- Commercial Invoice: This document provides details about the goods being shipped, including their description, quantity, value, and terms of sale.
- Packing List: This document lists the contents of each package or container, including the description, quantity, and weight of the goods.
- Certificate of Origin: This document certifies the country of origin of the goods. It is often required for customs clearance and to determine applicable duties and taxes.
- Other Documents: Depending on the nature of the goods and the specific requirements of the importing country, other documents may be needed, such as insurance certificates, phytosanitary certificates, or import licenses.
Sea Transport Procedures
The sea freight process involves several steps, from booking the shipment to delivering the goods to the final destination. These steps include:
- Booking the Shipment: The shipper contacts a freight forwarder or carrier to book space on a vessel.
- Cargo Preparation and Packing: The goods are prepared for shipment, including proper packaging and labeling.
- Documentation: The necessary shipping documents are prepared and submitted to the relevant authorities.
- Customs Clearance at Origin: The goods are cleared for export by the customs authorities of the exporting country.
- Ocean Freight: The goods are loaded onto the vessel and transported to the destination port.
- Customs Clearance at Destination: The goods are cleared for import by the customs authorities of the importing country.
- Delivery to Consignee: The goods are delivered to the final recipient.
For a more in-depth look at the sea freight process, please refer to our general guide on sea cargo.

Sea Transport Costs
Sea freight costs can vary depending on several factors, including the distance of the shipment, the size and weight of the cargo, the type of vessel used, and the prevailing market conditions.
Key cost components include:
- Ocean Freight: This is the cost of transporting the goods by sea.
- Terminal Handling Charges (THC): These are fees charged by the port terminals for handling the cargo.
- Documentation Fees: These are fees associated with preparing and processing the required shipping documents.
- Customs Clearance Fees: These are fees charged by customs brokers or agents for handling the customs clearance process.
- Insurance: Cargo insurance is recommended to protect against potential loss or damage during transit.
If you want to get rates and quotes, please request quotes for your shipment free-of-charge.
International Trade Agreements for Sea Transport
Several international trade agreements impact sea freight by establishing rules and regulations for trade between countries. These agreements can affect tariffs, customs procedures, and other aspects of shipping.
Key international trade agreements relevant to sea freight include:
- World Trade Organization (WTO) Agreements: The WTO provides a framework for international trade, including rules on tariffs, non-tariff barriers, and trade facilitation.
- Free Trade Agreements (FTAs): FTAs are agreements between two or more countries that reduce or eliminate tariffs and other trade barriers.
- Regional Trade Agreements: Regional trade agreements, such as the European Union (EU) or the Association of Southeast Asian Nations (ASEAN), establish common trade rules and regulations among member countries.
Features and Descriptions of common terms in customs
| Aspect | Description | Key Considerations |
|---|---|---|
| Customs Formalities | Legal procedures required for import/export | Declaration of goods, inspection, duties & taxes, release of goods |
| Regulations | International and national rules governing sea transport | IMO conventions, national maritime regulations, cargo-specific rules |
| Documentation | Essential paperwork for shipping | Bill of lading, commercial invoice, packing list, certificate of origin |
| Procedures | Steps involved in the sea freight process | Booking, cargo preparation, documentation, customs clearance, ocean freight, delivery |
| Costs | Factors influencing the price of sea freight | Ocean freight, THC, documentation fees, customs clearance fees, insurance |
| Trade Agreements | International agreements impacting sea trade | WTO agreements, FTAs, regional trade agreements |
The Customs Broker's Role
The first leg of the process is from the factory or manufacturer to the port operator. The supplier creates a commercial invoice and packing list, which is then given to a trucker who adds a delivery order to bring the goods to the port operator. Customs and the customs broker use the commercial invoice and packing list to check the cargo.
The second leg of the race is from the port of origin to the port of destination. The freight forwarder generates a bill of lading and submits an export filing to the customs authorities for export clearance. The captain of the ship or the ocean carrier itself then creates a manifest and helps complete customs requirements to move the import process forward with the destination country.
The third leg of the race is from the port of destination to the consignee's facility. It is considered best practice to clear import customs a week to a few days before arrival at the destination port so that the shipment can move smoothly forward once it arrives. The import customs process continues, and the import declaration moves along with the shipment delivery order for the trucker all the way up to delivery of the goods at the consignee's facility.
Throughout the journey, it is the task of the customs broker to ensure that all the necessary data elements and documents are available at the right time to submit to government authorities in the country of dispatch, any country the goods pass through in transit, and finally the country of destination of the goods.