Guide for shippers

Comparing Container Shipping Lines: How Consolidators Choose a Carrier and NVOCC

How to compare container shipping lines and NVOCCs for US–Caribbean and US–Africa routes: routes, schedules, all-in rates, surcharges, demurrage and detention, reliability and support.

By the ShipBackHome team · Updated · 10 min read
The short answer

Most consolidators book their containers through a licensed NVOCC, which books space on an ocean carrier for them. So you are really choosing two things: the NVOCC you work with, and the carrier it puts your container on. Compare them on whether the service calls at your destination port, how often it sails, the all-in cost (ocean freight plus surcharges and destination charges), free time before demurrage and detention, reliability, and the quality of the agent at the destination.

Key takeaways
  • Compare all-in, door-to-port costs, not just the base ocean rate.
  • Free time and demurrage/detention terms can cost more than the freight difference between carriers.
  • A weekly direct service to your port beats a cheaper rate with transshipment delays.
  • Get every quote in writing with the same container size, ports and dates.

Carriers, NVOCCs and where consolidators fit

Ocean carriers (also called VOCCs, vessel-operating common carriers) own or operate the ships. NVOCCs buy space from carriers and resell it, issue their own bills of lading, and often add paperwork, trucking and destination support. Both NVOCCs and ocean freight forwarders must be licensed by the Federal Maritime Commission (FMC).

A consolidator collects and loads other people's goods. Booking ocean freight for those goods, or issuing bills of lading for them, is NVOCC or forwarder work that needs an FMC license. That is why most consolidators book through a licensed NVOCC instead of going to the carrier directly.

Through a licensed NVOCCDirect with the carrier
Who it suitsConsolidators without their own FMC license (most small shippers)Companies licensed as an NVOCC or forwarder
RatesNVOCC's pooled buying power, with its margin on topCan be lower with a service contract and steady volume
CommitmentBook container by containerContracts may require minimum volumes
SupportHelp with documents, export filing, trucking and the destinationSelf-service portals; you handle more yourself
CreditVaries; often more flexible for small accountsUsually prepayment until you have history

You still need to know the carriers. Ask each NVOCC which carrier and service it would put your container on, then use the checklist below to compare them.

What to compare between container lines

1. Route and ports

Does the carrier load at a port near you (for example, South Florida, Jacksonville, Savannah or New York/New Jersey) and discharge at your destination port? A direct call is usually faster and safer than a service that transships through a hub.

2. Sailing frequency and cutoffs

Weekly sailings make it easier to keep a predictable schedule for customers. Check the cargo and documentation cutoffs and how much notice you get of schedule changes.

3. Transit time and transshipment

Ask for the port-to-port transit time and whether the container changes ships on the way. Each transshipment adds time and the risk of a missed connection.

4. The all-in rate

The base ocean freight is only part of the cost. Ask for an itemised quote that includes:

  • Bunker / fuel surcharge (often called BAF) and any low-sulfur fuel charge.
  • Terminal handling charges (THC) at origin and destination.
  • Documentation, bill of lading and security fees.
  • Peak-season or equipment surcharges.
  • Destination charges your agent or consignee will pay.

5. Free time, demurrage and detention

Demurrage is charged when a container stays at the terminal beyond its free time. Detention is charged when you keep the carrier's container outside the terminal beyond its free time. For consolidators who load at a warehouse and unload slowly at the destination, these terms can matter more than the freight rate. Compare free days at both ends and the daily rates after that.

6. Equipment availability

Can you reliably get empty 20 ft, 40 ft or 40 ft high-cube containers near you when you need them? Shortages in busy seasons can delay your schedule.

7. Reliability

Ask other shippers on the same route how often sailings run on time and how delays are communicated. Industry analysts also publish schedule-reliability reports for the larger carriers.

8. Booking, tracking and service

Good online booking and container tracking save time. Just as important: a responsive local contact and a dependable agent at the destination port.

9. Payment terms

Most carriers want prepayment from new customers. Ask how and when charges are invoiced, especially destination and demurrage charges.

Carriers serving the Caribbean and Africa from the US

These are well-known carriers on US–Caribbean and US–Africa trades. Routes and port calls change, so always confirm the current schedule for your ports on the carrier's website.

CarrierTypeFocus
CrowleyUS regional carrierCaribbean and Central America, with services from Florida ports
Seaboard MarineUS regional carrierCaribbean, Central and South America, based at PortMiami
Tropical ShippingRegional carrierThe Bahamas and the Caribbean, from the Port of Palm Beach
King OceanRegional carrierThe Caribbean and Latin America from South Florida
MaerskGlobal carrierCaribbean and West Africa services, often via hub ports
MSCGlobal carrierCaribbean and West Africa services, often via hub ports
CMA CGMGlobal carrierCaribbean and West Africa services, often via hub ports
Hapag-LloydGlobal carrierCaribbean and Africa services
ZIMGlobal carrierCaribbean services, often via hub ports

Regional carriers focus on shorter Florida-to-Caribbean routes and often offer frequent direct sailings and hands-on service. Global carriers cover more destinations, including West Africa, and can be competitive on longer routes, but may route cargo through transshipment hubs.

How to get and compare quotes

  1. Ask three or four licensed NVOCCs for quotes with the same details: container size, loading port, destination port, cargo type (for example, household goods in barrels and boxes, or vehicles) and the week you want to sail. Ask each one which carrier and service it would use.
  2. Ask for an itemised all-in quote and what is excluded.
  3. Ask for free time at origin and destination and the demurrage and detention rates after it.
  4. Put everything in one spreadsheet: total cost, transit time, direct or transshipped, sailing day, free time, and how long the quote is valid.
  5. Ask other shippers on the route about reliability before choosing on price alone.

Questions to ask before you book

  • Are you licensed by the FMC as an NVOCC? (Check the FMC's online list of licensed OTIs.)
  • Which carrier and service will my container go on?
  • Is this a direct service to my port, or is it transshipped? Where?
  • What day does it sail, and what are the cargo and documentation cutoffs?
  • What exactly is included in the rate, and what will the consignee pay at destination?
  • How many free days do I get at each end, and what are demurrage and detention after that?
  • Who is your agent at the destination, and how do I reach them?
  • How do you notify me of delays or schedule changes?
  • Can you file the US export information (EEI) for me if it is required?

Red flags

  • A quote far below everyone else's with no itemised breakdown.
  • Vague answers about destination charges or free time.
  • No written booking confirmation or bill of lading.
  • An NVOCC or forwarder that can't show it is licensed with the FMC (you can check the FMC's online list of licensed OTIs).

Keep track of every container

Once you are shipping regularly, tracking containers and telling customers where their barrels are takes real time. ShipBackHome lets you group bookings into containers, track them from loading to arrival, and give customers a tracking page. See how to start a container shipping business for the full workflow.

Frequently asked questions

Can a consolidator book directly with a container line?

Usually not. Booking ocean freight for other people's goods, or issuing bills of lading for them, requires an FMC license as an NVOCC or ocean freight forwarder. Most consolidators book through a licensed NVOCC, which also helps with documents, export filing and the destination. Booking directly becomes an option once a business holds its own FMC license and has steady volume.

What is the difference between demurrage and detention?

Demurrage is charged when a container stays at the port terminal longer than the free time allowed. Detention is charged when you keep the carrier's container outside the terminal (for example, at your warehouse or the consignee's) longer than the free time allowed.

Which shipping lines go to the Caribbean from the US?

Regional carriers such as Crowley, Seaboard Marine, Tropical Shipping and King Ocean focus on Caribbean routes from Florida, and global carriers including Maersk, MSC, CMA CGM, Hapag-Lloyd and ZIM also serve the Caribbean. Port calls change, so check current schedules for your exact ports.

How do I compare container shipping quotes?

Request quotes with identical details (container size, ports, cargo and sailing week), ask for an itemised all-in price including surcharges and destination charges, compare free time and demurrage/detention rates, and weigh transit time and reliability, not just the base ocean rate.

What surcharges are added to container shipping rates?

Common ones include a bunker or fuel surcharge (BAF), terminal handling charges at each end, documentation and bill of lading fees, security fees, and peak-season or equipment surcharges. Destination charges are often billed separately to the consignee.

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