Fewer containers fall overboard than you've heard — but the number just tripled
The most current answer: 1,478 shipping containers were lost at sea in 2025, out of roughly 280 million containers transported — about 0.0005% of everything shipped, according to the World Shipping Council's 2026 report. The "1,700 containers a year" figure that still headlines most coverage of this question comes from a WSC survey published in 2014. It described 2008–2013. It has been stale for over a decade.
The catch: 2025 was not a typical year. It ran 2.6 times higher than 2024's total of 576 and nearly seven times the record low of 221 containers in 2023. A single vessel casualty accounted for roughly 43% of everything lost in 2025. Container loss is a lumpy statistic: most years are quiet, and then one shipwreck rewrites the annual total.
- 1,478 containers lost in 2025, of ~280 million transported — 0.0005% (WSC 2026 update).
- 576 lost in 2024, and about 200 of those went overboard in the Cape of Good Hope area as Red Sea rerouting pushed transits around Africa up 191% versus 2023 (WSC 2025 update).
- 221 lost in 2023 — the lowest annual figure since WSC surveys began in 2008 (WSC 2024 update).
- The long-run average is 1,566 containers per year (2008–2022); WSC's 2025 report cites a ten-year average of 1,274 (WSC 2023 update; WSC 2025 update).
- One vessel casualty accounted for 640 containers — about 43% of all 2025 losses. WSC doesn't name the ship; the count matches MSC Elsa 3, which capsized off Kerala, India in May 2025 with 640 containers aboard (WSC 2026 update; Wikipedia).
- 128 lost containers were recovered in 2025 — the most since WSC began tracking recovery in 2023 (WSC 2026 update).
- The stale figure: 1,679 per year. That's the 2008–2013 average including catastrophic events, from WSC's 2014 survey — the origin of every "about 1,700 a year" claim still in circulation. Exclude catastrophic losses and the same survey found just 546 per year (Safety4Sea).
- The myth: "10,000 a year." WSC calls that widely circulated claim "grossly inaccurate" (Safety4Sea).
- Since January 1, 2026, reporting lost containers to the International Maritime Organization is mandatory — the first time the world will get a count that doesn't depend on a voluntary carrier survey (WSC 2026 update).
Why "1,700 containers a year" refuses to die
Every few years a journalist, an insurer, or an ocean-plastics campaign needs a number for containers lost at sea, and the one they find is 1,700. It traces to the World Shipping Council's 2014 survey, which averaged 2008–2013, a window that happened to include the two worst container casualties ever recorded: the MOL Comfort and the M/V Rena. Those years produced an average of 1,679 containers lost annually including catastrophic events, but only 546 excluding them (Safety4Sea). Media coverage rounded up, and the number fossilized.
The data has been better for a while now. WSC moved from three-year survey cycles to annual reporting in 2023, based on direct input from member carriers operating about 90% of global container vessel capacity, extrapolated to the full industry. The annual numbers show what the old averages buried: typical years run in the hundreds, not the thousands, and the multi-year averages are inflated by a small number of catastrophic wrecks.
| Approach | What it counts | Figure |
|---|---|---|
| WSC 2014 survey, incl. catastrophic | 2008–2013 average, with MOL Comfort and M/V Rena in the window | 1,679/year — the "1,700" origin |
| WSC 2014 survey, excl. catastrophic | Same window, routine losses only | 546/year |
| WSC 15-year average | 2008–2022, all losses | 1,566/year |
| WSC annual reports | Actual single-year counts, 2022–2025 | 221 to 1,478 |
| Viral claim | No published methodology | "10,000/year" — WSC: "grossly inaccurate" |
Four years of annual data: a record low, then a sharp rebound
The annual series is short — WSC only began publishing yearly counts in 2023 — but it already tells a clear story. Losses fell to 661 in 2022, then to a record-low 221 in 2023, as stowage standards tightened and the industry avoided a catastrophic casualty two years running. Then the trend reversed: 576 in 2024, and 1,478 in 2025, the worst year since the annual series began and roughly what the long-run average predicts.
| Year | Containers lost | Context |
|---|---|---|
| 2022 | 661 | Then the lowest on record (WSC 2023 update) |
| 2023 | 221 | Record low; roughly a third were recovered (WSC 2024 update) |
| 2024 | 576 | ~200 lost around the Cape of Good Hope as rerouting began (WSC 2025 update) |
| 2025 | 1,478 | One casualty = 43% of the total; 128 recovered (WSC 2026 update) |
For scale: the containers aboard the ships carry over $7 trillion worth of cargo a year (WSC 2023 update), and even 2025's elevated count means about one container lost for every 189,000 shipped.
Rerouting moved the losses to the Cape of Good Hope
The 2024 rebound has a geography. When Houthi attacks pushed carriers out of the Red Sea, vessel transits around the Cape of Good Hope rose 191% versus 2023 — and about 200 of 2024's 576 lost containers, roughly a third, went overboard in that area (WSC 2025 update). WSC president Joe Kramek put it plainly: rerouting to keep global commerce moving has carriers "navigating one of the world's most challenging routes."
For 2025, WSC points to severe weather in the North Atlantic and North Pacific, plus fire-related incidents, as the leading causes (WSC 2026 update). The route around southern Africa runs through some of the roughest ocean on the planet — the same waters that made "rounding the Cape" a sailor's proverb. Every diverted transit is more exposure. Container losses are one more line item in the Red Sea crisis bill, alongside the collapse in Suez Canal traffic we've documented separately.
When one ship rewrites the yearly average
Multi-year averages mislead because rare, catastrophic events dominate the totals. In a typical year, losses come from a scattering of stack collapses in heavy weather. In a bad year, one ship goes down with thousands of boxes and becomes most of the statistic single-handedly.
| Vessel | Year | Containers lost | What happened |
|---|---|---|---|
| MOL Comfort | 2013 | ~4,293 | Broke in two and sank in the Indian Ocean — the worst container-cargo loss ever, roughly 77% of all 2013 losses; claims estimated at $300–400M (Safety4Sea; Trade Risk Guaranty) |
| ONE Apus | 2020 | 1,816 | Stack collapse in a Pacific storm ~1,600 nautical miles northwest of Hawaii — the largest weather-related loss on record, including 64 dangerous-goods containers; claims over $200M (Wikipedia) |
| Maersk Essen | 2021 | ~750 | Heavy weather on a Pacific crossing to Los Angeles (Seatrade Maritime) |
| MSC Elsa 3 | 2025 | 640 (sank with vessel) | Capsized off Kerala, India with hazardous cargo aboard; Kerala declared a state disaster (Kerala SDMA; Wikipedia) |
| Maersk Eindhoven | 2021 | 260 | A minutes-long propulsion loss in heavy Pacific seas (Seatrade Maritime) |
The winter of 2020–21 deserves its own line: more than 2,675 containers went overboard in just two months, between November 30, 2020 and January 31, 2021 — the ONE Apus and Maersk Essen chief among them — as carriers ran hard through peak-season storms. The Maersk Eindhoven added 260 more that February (The Weather Channel).
Recovery is rare, but it's finally being measured
Most containers that go overboard sink. Some float low in the water for days or weeks — a documented hazard for yachts and fishing vessels — and some wash ashore, as at least 20 of MSC Elsa 3's did along the Kerala coast (Wikipedia). Recovery used to go unmeasured entirely. WSC began tracking it in 2023, and 2025's 128 recovered containers are the highest figure recorded so far — real progress, but still under 9% of that year's losses (WSC 2026 update).
The bigger measurement change arrived this year. As of January 1, 2026, SOLAS amendments make reporting lost containers to the IMO mandatory, flag state by flag state. Every number above comes from a voluntary survey of carriers covering about 90% of capacity. Starting with 2026 data, the count becomes a legal obligation, denominator disputes get smaller, and year-over-year comparisons get cleaner (WSC 2026 update).
Common questions about containers lost at sea
How many shipping containers are lost at sea each year?
1,478 containers were lost in 2025, per the World Shipping Council's 2026 report — the most recent full-year figure. Recent years ranged from a record-low 221 (2023) to 661 (2022), and the 15-year average through 2022 was 1,566 per year.
Is the "1,700 containers a year" figure accurate?
Not anymore. It comes from a 2014 WSC survey covering 2008–2013, a window that included the two worst container casualties on record. Excluding catastrophic events, that same survey found 546 per year. Annual counts since 2022 have run between 221 and 1,478.
What percentage of shipping containers are lost?
About 0.0005% in 2025 — 1,478 lost out of roughly 280 million transported. Even in the worst recent year, that's about one container lost per 189,000 shipped.
What causes containers to be lost at sea?
Severe weather is the leading cause — stack collapses driven by heavy rolling, including the parametric rolling implicated in the ONE Apus loss — followed by fires and full vessel casualties. In 2024–2025, rerouting around the Cape of Good Hope added exposure on one of the world's roughest routes.
What was the biggest container loss ever?
The MOL Comfort, which broke in two and sank in the Indian Ocean in June 2013 with roughly 4,293 containers — about 77% of everything lost that year. The largest weather-related loss was the ONE Apus in November 2020: 1,816 containers overboard in a single Pacific storm.
Do lost shipping containers float?
Briefly, sometimes. Most sink within days; a fraction drift semi-submerged long enough to be a navigation hazard, and some wash ashore. Recovery is rare — 128 containers were recovered in 2025, the highest annual figure WSC has recorded since it began tracking in 2023.
Who counts lost containers, and can I trust the numbers?
Through 2025, the count comes from WSC's survey of member carriers representing about 90% of global capacity, extrapolated industry-wide. Since January 1, 2026, reporting losses to the IMO is mandatory under SOLAS, which will make future counts more complete and less dependent on voluntary disclosure.
What the number actually tells you
If you need one citable figure, use the current one: 1,478 containers lost in 2025, about 0.0005% of the ~280 million moved (WSC, 2026 report). If you're tempted to write "about 1,700 containers are lost every year," don't — that average is twelve years stale, and the annual data that replaced it ranges from 221 to 1,478 depending entirely on whether a big ship went down.
The honest read is that container shipping is astonishingly good at not losing boxes — five in every million — and that the risk that remains comes in clumps. It concentrates in a handful of catastrophic casualties, in specific waters (the North Pacific in winter, and lately the Cape of Good Hope), and in specific decisions, like the industry-wide rerouting that followed the Red Sea attacks. For shippers, that's the actionable part: the odds your container goes overboard are negligible, but they're not evenly distributed. The routing your freight takes moves them — worth asking your 3PL or forwarder about directly. Marine cargo insurance prices this reality; the annual loss statistic is why it's cheap.
And watch the 2026 number when it lands: with mandatory IMO reporting in force, it will be the first count that doesn't rely on carriers volunteering the data.
How we built this
Annual loss counts come from the World Shipping Council's Containers Lost at Sea reports (2023–2026 updates), which survey member carriers operating roughly 90% of global container vessel capacity and extrapolate to the full industry; WSC published three-year survey averages from 2011 to 2020 and annual figures since 2023. The 1,679 and 546 figures are the 2008–2013 averages, with and without catastrophic events, from the 2014 survey as documented by Safety4Sea. The MOL Comfort attribution (~4,293 containers) is derived from WSC's statement that the casualty represented 77% of 2013's 5,578 losses; insurance-side accounts cite roughly 3,300 physically lost, and we note the range. The 640-container casualty in WSC's 2026 report is unnamed; we identify it as consistent with MSC Elsa 3, which sank off Kerala in May 2025 carrying 640 containers, but flag that WSC has not confirmed the attribution. The denominator moved between reports — WSC used ~250 million containers transported for 2022–2024 and ~280 million for 2025 — so loss percentages are calculated per report year, not against a single baseline. All figures are dated in the text.
- World Shipping Council — Containers Lost at Sea Report: 2026 Update (July 2026)
- World Shipping Council — Containers Lost at Sea overview (2026)
- World Shipping Council — Container Lost at Sea Report: 2025 Update (June 2025)
- World Shipping Council — Containers Lost at Sea Report: 2024 Update (June 2024)
- World Shipping Council — Containers Lost at Sea Report: 2023 Update (June 2023)
- Safety4Sea — Counting containers lost at sea (WSC survey history)
- Kerala State Disaster Management Authority — Ship Wreck: MSC Elsa 3 (2025)
- Wikipedia — 2025 Kerala oil spill (MSC Elsa 3)
- Wikipedia — ONE Apus
- Trade Risk Guaranty — The MOL Comfort disaster
- Seatrade Maritime — Maersk Essen loses 750 containers overboard (January 2021)
- Seatrade Maritime — Maersk Eindhoven propulsion loss (2021)
- The Weather Channel — More containers lost in two months than in an entire year (April 2021)
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