5. Ocean

Picture two shipments leaving the same factory cluster in Vietnam. The first is finished apparel: 1,500 cartons of t-shirts, dresses, and jeans. The second is industrial parts: 200 crates of machined steel components.

Both head to the same US DC. Both have roughly the same dollar value. Both fit in a single 40-foot container in terms of physical dimensions. By air, each would cost on the order of $24,000 and arrive in 5 days. By ocean, each costs about $2,000 and arrives in 35 days.

Almost every time, both pick ocean. That single tradeoff — a tenth of the cost, in exchange for slow and unreliable transit — is why ocean moves over 80% of global trade by volume [UNCTAD Review of Maritime Transport 2024]. It’s also why ocean inbound is hard to manage well: every operational decision in the rest of this chapter is downstream of that one tradeoff.

Starting cold? Ocean is the default mode for any inbound lane that crosses an ocean. Cheap, slow, and unreliable in ways that show up after the rate is locked. Most of this chapter is the operational reality the rate doesn’t price.

FCL, LCL, and the breakpoint between them

Imagine you have 12 cubic meters of finished goods. By volume, that’s a couple of pallets — not enough to fill a 40-foot container (which holds about 58 CBM). What do you do?

Two options:

1. Book the whole container anyway — this is FCL . Your cargo travels alone. The container leaves your supplier’s dock when you’re ready, gets loaded on the next sailing, and arrives at your destination with no one else’s freight inside it.
2. Share a container with other shippers — this is LCL . Your goods go to a consolidation warehouse near the port, get loaded into a shared container with other companies’ freight, and travel together. At the destination, the forwarder unpacks everything and gets your portion to you.

LCL sounds obviously cheaper for 12 CBM. But it’s not quite that simple. There’s a hidden cost: you’re paying not just for the freight, but for the consolidation process — extra time at the origin warehouse, extra time at the destination warehouse, more handling (and more damage), and much less predictable transit.

The point at which FCL becomes cheaper than LCL, once you account for those hidden costs, typically sits between 13–17 CBMillustrative, depending on the lane and how soft the spot market is. Below that, LCL wins on raw cost per CBM. Above that, FCL is cheaper and you skip the operational tax. For 12 CBM in a soft market, FCL often pencils anyway.

A side note: which constraint binds first, volume or weight?

Ocean rates are quoted per CBM or per container — volume, not weight. But every container also has a maximum payload weight of about 28,000 kgillustrative.

Most consumer-goods cargo (apparel, electronics, packaged goods) fills the container volumetrically. For dense cargo (machined parts, chemicals, building materials), the weight cap binds first. A 40-foot box of steel coils might only fill 20 CBM but already weigh 28,000 kg. You’ve paid for empty volume you can’t use. On every shipment, the practitioner’s first question is volume or weight?

Standard container sizes:

• 20-foot box: ~28 CBMillustrative usable, ~28,000 kgillustrative payload.
• 40-foot box: ~58 CBMillustrative, ~28,000 kgillustrative.
• 40-foot high-cube (40’HC): ~68 CBMillustrative, ~28,000 kgillustrative.
• 45-foot box: ~84 CBMillustrative.
• Specialty: reefer (40’ RF), open-top, flat rack, tank container.

Ocean FCL vs. LCL — the breakpoint
Illustrative rates, intercontinental 40'HC. Real breakpoints shift with spot rates but typically fall between 13–17 CBM.

Read: below the band, LCL is cheaper per CBM. Above the band, FCL dominates — and you also drop the consolidation tax on visibility, damage, and CoV. Marginal shipments near the band should usually be priced as FCL regardless.

Don't LCL a marginal shipment

If your shipment is 12 CBM and the breakpoint is 15, most planners reflexively pick LCL. The more sophisticated move: price a 20’ FCL anyway. When spot rates are soft, the FCL is often within 15%illustrative of the LCL cost, with dramatically better reliability and no consolidation damage risk. The extra 8 CBM of empty space isn’t free, but it’s often worth it to get your goods 7 days earlier and fully under your control.

Who actually moves the box

Ocean is a concentrated, alliance-based market. As of 2025, four major groupings cover most of the East-West container trade:

• Carriers (vessel operators). After the 2024–25 alliance reshuffle: the Gemini Cooperation (Maersk + Hapag-Lloyd, hub-and-spoke model), the Premier Alliance (ONE + HMM + Yang Ming, with MSC slot-share arrangements on certain lanes), the Ocean Alliance (CMA CGM + COSCO + Evergreen + OOCL, the only major alliance left intact and extended through 2032), and standalone MSC (the world’s largest carrier at ~21% global TEU share, ~7.2M TEUillustrative per Alphaliner).
• NVOCC s (Non-Vessel-Operating Common Carriers): they buy slot capacity from carriers in bulk and resell under their own BoL . Most large freight forwarders sit on ocean as NVOCCs.
• Freight forwarders: may operate as NVOCCs or as pure intermediaries. They manage the booking, documentation, and door-to-door orchestration. They don’t move the ship.
• 3PLs: often own forwarder arms and add warehousing / distribution.
• Shippers: that’s you. To contract directly with carriers, you typically need 1,000+ TEU/yearillustrative on a given trade lane. Smaller volumes go through NVOCC/forwarder programs.

Alliance structure matters because it determines which vessels actually sail your lane, how often, and on what string. When an alliance reshuffles (as happened through 2024–25), transit times and port-call patterns on major lanes shift materially. Track which alliance covers your lane during RFP design.

Port-to-port transit vs. door-to-door

Imagine your forwarder quotes “Ningbo to LA, 14 days.” That’s the port-to-port number. The door-to-door reality on the same shipment looks like this:

• Origin drayage: 0–3 daysillustrative from supplier to POL.
• Pre-loading dwell: 2–5 daysillustrative (cutoff, VGM , ISF , rolling risk).
• Ocean leg: 14–45 daysillustrative depending on trade lane and transshipment.
• Discharge + terminal dwell: 2–7 daysillustrative.
• Customs clearance: same day to 3 days (longer if examined).
• Destination drayage + linehaul: 1–10 daysillustrative.

Door-to-door for a Ningbo → Dallas FCL is typically 28–38 daysillustrative, of which the ocean segment is about half. Optimization effort spent on the ocean segment is usually misallocated. The wins are in the port bookends.

Vessel rolling: the silent killer

Imagine your booking is “confirmed” by the carrier, your container is at the port, and 24 hours before sailing the carrier tells you the vessel is oversold and your box has been rolled to next week’s sailing. There’s almost nothing you can do.

A “confirmed” booking gets rolled to the next sailing when the vessel is oversold or when the port skips a call. You find out 12–72 hours before the vessel was supposed to load. Rolling frequency rises sharply on:

• Transpacific eastbound (TPEB) in peak season (Aug–Oct).
• Transatlantic during schedule reliability dips.
• Any lane where the carrier has a history of blank sailings (cancelled sailings to manage capacity).

Rolling doesn’t trigger contractual penalties on the carrier. The BoL contract is a best-efforts contract in all but a few forwarder-underwritten premium products. Your recourse is commercial pressure and having a second carrier on the lane.

Spot vs. contract: the standing decision

Every shipper with meaningful ocean volume runs into this question annually. Picture three different shippers’ approaches:

• The all-contract shipper. Locks in 12-month rates on top lanes. Smooth budget, predictable cost. Over-pays relative to spot in soft markets and risks under-allocation when markets tighten and contracts get re-cut.
• The all-spot shipper. Pure market exposure. Gets the floor in soft markets but can pay 3–5×illustrative contract during peak / tariff frontloading. Only viable for non-strategic lanes or capacity-rich shippers.
• The blended shipper. Most large shippers contract 60–80%illustrative of forecasted volume on annual rates and flex the rest on the spot/index market. Hedge in both directions.

Transpacific spot rates ran $2,100–$6,400/FEU in 2024–25illustrative [Freightos Baltic Index]; that volatility is the cost of running pure spot. The blended approach is the practitioner default for a reason.

Demurrage, detention, and per diem

Imagine your container arrived at LA last Friday. It’s now Wednesday and it’s still sitting at the marine terminal because your dray carrier couldn’t get a chassis. Three different charges are accruing simultaneously, and most practitioners conflate them:

Charge	Who owns the equipment?	Where is it?	Clock
Demurrage	Carrier	At the marine terminal	From vessel discharge to gate-out
Detention	Carrier	Out of the terminal, with you	From gate-out to empty return
Per diem	Chassis provider	With you	Chassis time out, in US markets

Free time varies (4 days demurrage, 4 days detentionillustrative is typical on US imports; can be negotiated up to 7+4 or 10+5 in RFP ). Once you blow through free time, rates tier upward fast. The US FMC ‘s Demurrage & Detention Rule [FMC D&D Rule] (effective May 28, 2024) forced carriers to itemize and justify these charges and gave billed parties a 30-day window to dispute. A September 2025 court ruling vacated the section that limited who could be billed (§541.4); the rest of the rule stands. Aggressive shippers now dispute a meaningful share of D&D invoices successfully.

Drayage: the forgotten mode inside ocean

A 40-foot box that sailed 11,000 km from Ningbo to Long Beach for $2,000 may cost $600 to move 40 kmillustrative from the LA terminal to a transload yard. Per kilometer, the drayage is more expensive than the ocean leg. Drayage is the short-haul trucking move from the marine terminal (or rail ramp) to the next node, and it’s a separate market with its own economics, its own chronic failures, and (in the US) its own chassis problem.

• Drayage in LA/LB, NYNJ, and Savannah routinely dominates the cost per mile of the entire ocean move.
• Chassis are rented separately in the US, from chassis pools operated by IEPs (Intermodal Equipment Providers) like TRAC and DCLI. Chassis shortages at major ports are a perennial capacity constraint.
• Dray drivers are 1099 owner-operators in most US markets, and driver availability is the upstream limit on dray capacity. Appointment-system reform (PierPass, Port Optimizer, TraPac booking) has helped but not fixed it.
• Outside the US, the chassis problem largely doesn’t exist; the container and chassis move together as one unit. But congestion at origin ports (Shanghai, Shenzhen, Antwerp, Rotterdam) shows up the same way.

Reefer, DG, and specialty containers

Most ocean cargo moves in standard dry containers. A few categories don’t:

• Reefer: temperature-controlled containers, with gensets for plug points on the vessel and at terminals. Pre-trip inspection (PTI) is non-negotiable. Most reefer failures are traced to pre-load, not in-transit. Budget 15–30%illustrative premium over dry FCL.
• DG (Dangerous Goods): classified per IMDG Code [IMO IMDG Code], nine hazard classes. Requires DG declaration, proper packing & labeling, shipper’s bond, and is often restricted on vessel (stowage rules, quantity caps). DG LCL is commercially available but restricted.
• Flat racks & open-tops: for cargo that exceeds container internal dimensions in one or two axes. Priced per move plus out-of-gauge (OOG) surcharges.
• Tank containers: ISO tanks for liquid bulk. Cleaning certification (last-three-cargo) is the operational complexity.

Cost structure: what your quote actually includes

A typical FCL ocean quote breaks down into:

• Ocean freight (base rate)
• Bunker surcharges (BAF / BUC / EBS)
• Currency surcharges (CAF)
• Peak season surcharges (PSS)
• General rate increases (GRI, imposed and sometimes not held)
• Origin THC + destination THC (Terminal Handling Charges)
• Documentation fees (BL fee, AMS fee)
• Security / environmental surcharges (ISPS, low-sulphur compliance, ETS for EU)

What is not in the quote: drayage, chassis, customs brokerage, duty, MPF/HMF, D&D exposure, warehousing. A “cheap” ocean quote is often made cheap by stripping these out. Total landed cost is the only meaningful comparison.

Putting it together

Ocean is a commodity-grade product with artisanal failure modes. The headline rate is a fraction of the cost and a fraction of the reliability story. Negotiating a better rate is the easy part; the wins are in everything that happens around the rate.

How to think about ocean decisions

Five decisions worth revisiting on your own lanes:

When you’re shipping under ~15 CBM: ask whether LCL is really cheaper once you count the consolidation tax. In a soft rate market, FCL often pencils anyway.

When your cargo is dense (machined parts, chemicals, raw materials): the FCL/LCL conversation is moot. Your binding constraint is weight, not volume. Plan around the ~28,000 kgillustrative payload cap.

When you’re allocating across carriers: target around 30–40% on your top carrier and 70–85% on your top three, but don’t break a working relationship just to hit a number. Concentration is a tool, not a target.

When D&D is high: look upstream. D&D over 8% of base spendillustrative is almost always a drayage or documentation issue, not a carrier issue. Tight inbound ops typically run under ~2%illustrative.

When the alliance structure changes: check which vessels actually cover your lane. The 2024–25 reshuffle (Gemini, Premier, Ocean Alliance, MSC standalone) changed port-call patterns on major routes.

Should-cost build for Ocean FCL

Need to decompose this mode into a cost model you can benchmark against? The full should-cost build (cost build-up table, sensitivities, benchmarks, shipper levers, hidden-cost map, and a worked example with a visual cost waterfall) lives in the Should-Cost Evaluation → Ocean FCL section.