Attacks on shipping in the Red Sea divert traffic around Africa

Started 2023-11-19 (19 November 2023), and ongoing. Scroll to follow the record one dated step at a time. Read the full event record.

Transits, all vessel types, Bab el-Mandeb StraitTransits, all vessel types, Bab el-Mandeb Strait, 2023-09-20 (20 September 2023) to 2024-10-23 (23 October 2024): values ranged from 17 transits per day on 2024-07-01 to 95 transits per day on 2023-10-27. The shaded band marks the event window, 2023-11-19 to 2024-10-23. Small marks on the line show the dates of the timeline steps.0204060801002023-09-202024-10-23
Transits, all vessel types, Bab el-Mandeb Strait, 2023-09-20 (20 September 2023) to 2024-10-23 (23 October 2024): values ranged from 17 transits per day on 2024-07-01 to 95 transits per day on 2023-10-27. The shaded band marks the event window, 2023-11-19 to 2024-10-23. Small marks on the line show the dates of the timeline steps.

Source: IMF PortWatch (portwatch.imf.org), International Monetary Fund, using UN Global Platform AIS data. Statistics derived by World Freight Monitor. Terms. Retrieved 2026-10-28 (28 October 2026).

Transits, all vessel types, Bab el-Mandeb Strait (transits per day), daily values shown in the story chart.
Datetransits per day
2023-09-2075
2023-09-2165
2023-09-2280
2023-09-2383
2023-09-2479
2023-09-2563
2023-09-2672
2023-09-2767
2023-09-2880
2023-09-2976
2023-09-3081
2023-10-0183
2023-10-0272
2023-10-0377
2023-10-0474
2023-10-0580
2023-10-0690
2023-10-0778
2023-10-0871
2023-10-0971
2023-10-1073
2023-10-1186
2023-10-1280
2023-10-1378
2023-10-1488
2023-10-1577
2023-10-1686
2023-10-1782
2023-10-1877
2023-10-1984
2023-10-2087
2023-10-2187
2023-10-2275
2023-10-2362
2023-10-2471
2023-10-2586
2023-10-2662
2023-10-2795
2023-10-2883
2023-10-2962
2023-10-3084
2023-10-3177
2023-11-0161
2023-11-0294
2023-11-0387
2023-11-0485
2023-11-0569
2023-11-0665
2023-11-0767
2023-11-0877
2023-11-0984
2023-11-1070
2023-11-1186
2023-11-1271
2023-11-1384
2023-11-1470
2023-11-1576
2023-11-1675
2023-11-1787
2023-11-1884
2023-11-1959
2023-11-2072
2023-11-2187
2023-11-2284
2023-11-2375
2023-11-2486
2023-11-2574
2023-11-2688
2023-11-2765
2023-11-2877
2023-11-2989
2023-11-3072
2023-12-0164
2023-12-0267
2023-12-0390
2023-12-0485
2023-12-0572
2023-12-0666
2023-12-0775
2023-12-0882
2023-12-0977
2023-12-1065
2023-12-1162
2023-12-1283
2023-12-1381
2023-12-1491
2023-12-1576
2023-12-1665
2023-12-1757
2023-12-1852
2023-12-1956
2023-12-2063
2023-12-2153
2023-12-2250
2023-12-2350
2023-12-2469
2023-12-2560
2023-12-2657
2023-12-2745
2023-12-2845
2023-12-2970
2023-12-3044
2023-12-3149
2024-01-0136
2024-01-0252
2024-01-0341
2024-01-0454
2024-01-0545
2024-01-0645
2024-01-0743
2024-01-0851
2024-01-0953
2024-01-1043
2024-01-1155
2024-01-1235
2024-01-1343
2024-01-1427
2024-01-1529
2024-01-1638
2024-01-1746
2024-01-1832
2024-01-1936
2024-01-2039
2024-01-2140
2024-01-2245
2024-01-2335
2024-01-2431
2024-01-2534
2024-01-2629
2024-01-2732
2024-01-2831
2024-01-2937
2024-01-3028
2024-01-3137
2024-02-0132
2024-02-0239
2024-02-0328
2024-02-0427
2024-02-0550
2024-02-0637
2024-02-0728
2024-02-0829
2024-02-0930
2024-02-1032
2024-02-1138
2024-02-1228
2024-02-1341
2024-02-1432
2024-02-1533
2024-02-1638
2024-02-1733
2024-02-1843
2024-02-1936
2024-02-2033
2024-02-2132
2024-02-2237
2024-02-2345
2024-02-2426
2024-02-2544
2024-02-2638
2024-02-2741
2024-02-2828
2024-02-2935
2024-03-0121
2024-03-0230
2024-03-0353
2024-03-0437
2024-03-0528
2024-03-0635
2024-03-0730
2024-03-0830
2024-03-0929
2024-03-1033
2024-03-1126
2024-03-1236
2024-03-1333
2024-03-1435
2024-03-1538
2024-03-1624
2024-03-1739
2024-03-1822
2024-03-1934
2024-03-2029
2024-03-2126
2024-03-2240
2024-03-2332
2024-03-2433
2024-03-2529
2024-03-2646
2024-03-2736
2024-03-2833
2024-03-2932
2024-03-3025
2024-03-3137
2024-04-0134
2024-04-0229
2024-04-0323
2024-04-0431
2024-04-0530
2024-04-0633
2024-04-0728
2024-04-0828
2024-04-0938
2024-04-1034
2024-04-1140
2024-04-1231
2024-04-1332
2024-04-1431
2024-04-1528
2024-04-1641
2024-04-1732
2024-04-1840
2024-04-1927
2024-04-2027
2024-04-2134
2024-04-2229
2024-04-2319
2024-04-2432
2024-04-2540
2024-04-2647
2024-04-2740
2024-04-2830
2024-04-2926
2024-04-3038
2024-05-0135
2024-05-0238
2024-05-0328
2024-05-0433
2024-05-0529
2024-05-0632
2024-05-0727
2024-05-0835
2024-05-0936
2024-05-1030
2024-05-1130
2024-05-1235
2024-05-1326
2024-05-1427
2024-05-1529
2024-05-1638
2024-05-1735
2024-05-1837
2024-05-1931
2024-05-2035
2024-05-2141
2024-05-2231
2024-05-2333
2024-05-2433
2024-05-2525
2024-05-2628
2024-05-2725
2024-05-2835
2024-05-2939
2024-05-3031
2024-05-3126
2024-06-0129
2024-06-0228
2024-06-0328
2024-06-0427
2024-06-0533
2024-06-0644
2024-06-0735
2024-06-0841
2024-06-0925
2024-06-1032
2024-06-1128
2024-06-1232
2024-06-1338
2024-06-1444
2024-06-1530
2024-06-1628
2024-06-1731
2024-06-1837
2024-06-1937
2024-06-2026
2024-06-2129
2024-06-2233
2024-06-2330
2024-06-2429
2024-06-2526
2024-06-2627
2024-06-2728
2024-06-2828
2024-06-2931
2024-06-3027
2024-07-0117
2024-07-0233
2024-07-0327
2024-07-0430
2024-07-0533
2024-07-0635
2024-07-0729
2024-07-0833
2024-07-0928
2024-07-1032
2024-07-1128
2024-07-1228
2024-07-1335
2024-07-1439
2024-07-1535
2024-07-1628
2024-07-1722
2024-07-1829
2024-07-1930
2024-07-2033
2024-07-2127
2024-07-2228
2024-07-2329
2024-07-2419
2024-07-2523
2024-07-2630
2024-07-2732
2024-07-2823
2024-07-2921
2024-07-3035
2024-07-3125
2024-08-0136
2024-08-0240
2024-08-0327
2024-08-0428
2024-08-0536
2024-08-0623
2024-08-0723
2024-08-0832
2024-08-0930
2024-08-1039
2024-08-1130
2024-08-1239
2024-08-1333
2024-08-1429
2024-08-1527
2024-08-1628
2024-08-1727
2024-08-1834
2024-08-1931
2024-08-2036
2024-08-2129
2024-08-2228
2024-08-2326
2024-08-2423
2024-08-2536
2024-08-2631
2024-08-2742
2024-08-2830
2024-08-2930
2024-08-3036
2024-08-3131
2024-09-0126
2024-09-0233
2024-09-0322
2024-09-0426
2024-09-0544
2024-09-0631
2024-09-0734
2024-09-0831
2024-09-0925
2024-09-1030
2024-09-1138
2024-09-1235
2024-09-1330
2024-09-1426
2024-09-1525
2024-09-1623
2024-09-1735
2024-09-1832
2024-09-1938
2024-09-2030
2024-09-2128
2024-09-2233
2024-09-2330
2024-09-2430
2024-09-2530
2024-09-2638
2024-09-2732
2024-09-2826
2024-09-2928
2024-09-3028
2024-10-0132
2024-10-0225
2024-10-0333
2024-10-0426
2024-10-0539
2024-10-0633
2024-10-0737
2024-10-0842
2024-10-0927
2024-10-1023
2024-10-1123
2024-10-1245
2024-10-1335
2024-10-1425
2024-10-1525
2024-10-1628
2024-10-1730
2024-10-1836
2024-10-1929
2024-10-2038
2024-10-2133
2024-10-2228
2024-10-2332
  1. What happened

    On 2023-11-19 (19 November 2023) the vehicle carrier Galaxy Leader was seized in the Red Sea near Hodeidah, the first in a run of attacks on merchant ships that the United Kingdom government and other states attribute to the Houthi movement. Attacks with missiles, drones and boarding parties followed through the Bab el-Mandeb Strait and the Gulf of Aden. From 2023-12-15 (15 December 2023) Maersk paused its ships bound for the strait and then routed services around the Cape of Good Hope, and other carriers did the same, moving a large share of Asia to Europe traffic off the Suez route. Attacks paused between late 2025 and early 2026 and some services returned, then threats and rerouting resumed. As of 2026-09-15 (15 September 2026) no dated official announcement records an end.

  2. The vehicle carrier Galaxy Leader is boarded from a helicopter and taken to the Yemeni coast near Hodeidah with its crew aboard. [s3]

  3. The United Kingdom government condemns what it calls the unlawful seizure of the ship by the Houthis and demands the release of vessel and crew. [s1]

  4. Maersk instructs all of its vessels bound for the Bab el-Mandeb Strait to pause, citing a near miss involving one of its ships the day before and a further attack on a container ship. [s2]

  5. Maersk says the paused ships will instead sail around Africa by way of the Cape of Good Hope. [s2]

  6. After an attack on one of its ships, Maersk pauses all transits through the Red Sea and the Gulf of Aden until further notice and diverts them around the Cape. [s2]

  7. After a pause in attacks from about November 2025, officials of the group are reported as saying they will resume attacks on merchant ships, and Maersk again moves selected services to the Cape route. [s4]

  8. Reporting from the region describes Houthi control of the Yemeni Red Sea coast and says operators are still routing around the Cape rather than through the strait. [s5]

Measured effect

Transits, all vessel types, Bab el-Mandeb Strait

Baseline (expected)
77.5 transits per day
Observed
47.8 transits per day
Change
-29.7 (-38.3%)
Standardised score
-3.4
Event window
2023-11-19 to 2024-03-17 (120 days, provisional)
Baseline window
2023-09-17 to 2023-11-11 (56 valid days)
Method
wfm-effect-1.0
Computed
2026-09-19 (19 September 2026), data revision 1:0c379bcba900
Transits, all vessel types, Bab el-Mandeb StraitTransits, all vessel types, Bab el-Mandeb Strait, 2023-09-10 (10 September 2023) to 2026-10-25 (25 October 2026): values ranged from 13 transits per day on 2025-12-09 to 97 transits per day on 2023-09-14, with a mean of 37.1 transits per day. The latest value, for 2026-10-25, was 36 transits per day. The shaded band marks the event window, 2023-11-19 to 2026-10-25.0204060801002023-09-102025-04-032026-10-25
Transits, all vessel types, Bab el-Mandeb Strait, 2023-09-10 (10 September 2023) to 2026-10-25 (25 October 2026): values ranged from 13 transits per day on 2025-12-09 to 97 transits per day on 2023-09-14, with a mean of 37.1 transits per day. The latest value, for 2026-10-25, was 36 transits per day. The shaded band marks the event window, 2023-11-19 to 2026-10-25.

Source: IMF PortWatch (portwatch.imf.org), International Monetary Fund, using UN Global Platform AIS data. Statistics derived by World Freight Monitor. Terms. Retrieved 2026-10-28 (28 October 2026).

Transits, all vessel types, Bab el-Mandeb Strait (transits per day). Weekly means, week starting Monday.
Datetransits per day
2023-09-0469.0
2023-09-1176.4
2023-09-1876.9
2023-09-2574.6
2023-10-0277.4
2023-10-0979.0
2023-10-1682.6
2023-10-2374.4
2023-10-3079.6
2023-11-0674.3
2023-11-1376.4
2023-11-2080.9
2023-11-2774.9
2023-12-0474.6
2023-12-1173.6
2023-12-1856.1
2023-12-2552.9
2024-01-0145.1
2024-01-0843.9
2024-01-1537.1
2024-01-2233.9
2024-01-2932.6
2024-02-0534.9
2024-02-1235.4
2024-02-1936.1
2024-02-2635.1
2024-03-0431.7
2024-03-1133.0
2024-03-1830.9
2024-03-2534.0
2024-04-0129.7
2024-04-0833.4
2024-04-1532.7
2024-04-2233.9
2024-04-2932.4
2024-05-0632.1
2024-05-1331.9
2024-05-2032.3
2024-05-2730.4
2024-06-0333.3
2024-06-1033.1
2024-06-1731.9
2024-06-2428.0
2024-07-0129.1
2024-07-0831.9
2024-07-1529.1
2024-07-2226.3
2024-07-2930.3
2024-08-0530.4
2024-08-1231.0
2024-08-1929.9
2024-08-2632.3
2024-09-0231.6
2024-09-0929.9
2024-09-1631.3
2024-09-2330.6
2024-09-3030.9
2024-10-0733.1
2024-10-1430.1
2024-10-2129.9
2024-10-2834.0
2024-11-0434.6
2024-11-1133.7
2024-11-1831.3
2024-11-2532.7
2024-12-0229.4
2024-12-0938.0
2024-12-1627.9
2024-12-2331.7
2024-12-3032.6
2025-01-0633.1
2025-01-1332.3
2025-01-2032.1
2025-01-2733.1
2025-02-0331.0
2025-02-1031.6
2025-02-1732.4
2025-02-2431.9
2025-03-0332.3
2025-03-1033.4
2025-03-1734.1
2025-03-2431.1
2025-03-3134.4
2025-04-0733.9
2025-04-1430.0
2025-04-2134.1
2025-04-2831.9
2025-05-0532.1
2025-05-1234.0
2025-05-1934.6
2025-05-2633.9
2025-06-0235.3
2025-06-0935.6
2025-06-1626.1
2025-06-2328.9
2025-06-3032.0
2025-07-0735.0
2025-07-1427.6
2025-07-2132.6
2025-07-2831.6
2025-08-0435.4
2025-08-1135.3
2025-08-1830.9
2025-08-2537.7
2025-09-0134.1
2025-09-0835.6
2025-09-1534.3
2025-09-2233.3
2025-09-2933.7
2025-10-0634.0
2025-10-1337.6
2025-10-2037.4
2025-10-2735.0
2025-11-0340.1
2025-11-1033.9
2025-11-1740.7
2025-11-2437.4
2025-12-0136.9
2025-12-0825.3
2025-12-1532.4
2025-12-2234.6
2025-12-2933.3
2026-01-0533.9
2026-01-1233.1
2026-01-1934.1
2026-01-2635.0
2026-02-0234.0
2026-02-0935.3
2026-02-1640.4
2026-02-2336.6
2026-03-0235.3
2026-03-0930.3
2026-03-1640.0
2026-03-2335.7
2026-03-3038.1
2026-04-0636.1
2026-04-1335.7
2026-04-2039.6
2026-04-2734.7
2026-05-0434.0
2026-05-1135.3
2026-05-1841.1
2026-05-2534.3
2026-06-0137.6
2026-06-0836.3
2026-06-1537.1
2026-06-2235.4
2026-06-2934.4
2026-07-0632.7
2026-07-1340.6
2026-07-2028.3
2026-07-2730.7
2026-08-0325.4
2026-08-1029.4
2026-08-1729.4
2026-08-2426.3
2026-08-3125.4
2026-09-0727.3
2026-09-1424.7
2026-09-2127.1
2026-09-2829.6
2026-10-0528.3
2026-10-1226.4
2026-10-1928.9

This is a measured change in public data during the event window, compared with a baseline before it. It shows timing, not cause. We describe an event as causing a change only when an official source says so.

Transits, all vessel types, Suez Canal

Baseline (expected)
75.8 transits per day
Observed
54.1 transits per day
Change
-21.7 (-28.6%)
Standardised score
-2.5
Event window
2023-11-19 to 2024-03-17 (120 days, provisional)
Baseline window
2023-09-17 to 2023-11-11 (56 valid days)
Method
wfm-effect-1.0
Computed
2026-09-19 (19 September 2026), data revision 1:270101932d6b
Transits, all vessel types, Suez CanalTransits, all vessel types, Suez Canal, 2023-09-10 (10 September 2023) to 2026-10-25 (25 October 2026): values ranged from 10 transits per day on 2024-12-12 to 95 transits per day on 2023-11-17, with a mean of 43.1 transits per day. The latest value, for 2026-10-25, was 46 transits per day. The shaded band marks the event window, 2023-11-19 to 2026-10-25.0204060801002023-09-102025-04-032026-10-25
Transits, all vessel types, Suez Canal, 2023-09-10 (10 September 2023) to 2026-10-25 (25 October 2026): values ranged from 10 transits per day on 2024-12-12 to 95 transits per day on 2023-11-17, with a mean of 43.1 transits per day. The latest value, for 2026-10-25, was 46 transits per day. The shaded band marks the event window, 2023-11-19 to 2026-10-25.

Source: IMF PortWatch (portwatch.imf.org), International Monetary Fund, using UN Global Platform AIS data. Statistics derived by World Freight Monitor. Terms. Retrieved 2026-10-28 (28 October 2026).

Transits, all vessel types, Suez Canal (transits per day). Weekly means, week starting Monday.
Datetransits per day
2023-09-0478.0
2023-09-1175.3
2023-09-1871.6
2023-09-2577.1
2023-10-0274.9
2023-10-0979.0
2023-10-1674.4
2023-10-2377.6
2023-10-3076.0
2023-11-0675.1
2023-11-1379.3
2023-11-2075.9
2023-11-2775.0
2023-12-0473.7
2023-12-1178.3
2023-12-1870.9
2023-12-2560.3
2024-01-0154.0
2024-01-0849.6
2024-01-1550.7
2024-01-2242.7
2024-01-2939.0
2024-02-0542.6
2024-02-1239.9
2024-02-1944.6
2024-02-2641.0
2024-03-0440.9
2024-03-1138.4
2024-03-1838.7
2024-03-2538.4
2024-04-0141.9
2024-04-0839.0
2024-04-1544.0
2024-04-2239.4
2024-04-2936.4
2024-05-0642.7
2024-05-1341.3
2024-05-2044.0
2024-05-2739.7
2024-06-0339.7
2024-06-1039.9
2024-06-1737.3
2024-06-2437.1
2024-07-0137.9
2024-07-0837.1
2024-07-1537.6
2024-07-2239.3
2024-07-2940.4
2024-08-0538.4
2024-08-1242.0
2024-08-1941.7
2024-08-2639.6
2024-09-0235.7
2024-09-0934.3
2024-09-1641.0
2024-09-2339.3
2024-09-3036.7
2024-10-0737.7
2024-10-1436.9
2024-10-2138.0
2024-10-2838.1
2024-11-0436.7
2024-11-1135.6
2024-11-1837.9
2024-11-2533.1
2024-12-0235.6
2024-12-0934.1
2024-12-1640.4
2024-12-2334.7
2024-12-3033.3
2025-01-0638.1
2025-01-1336.7
2025-01-2036.7
2025-01-2736.6
2025-02-0331.0
2025-02-1037.9
2025-02-1733.6
2025-02-2435.1
2025-03-0337.6
2025-03-1038.3
2025-03-1736.6
2025-03-2438.1
2025-03-3136.7
2025-04-0739.3
2025-04-1435.6
2025-04-2136.4
2025-04-2836.4
2025-05-0534.4
2025-05-1239.1
2025-05-1938.3
2025-05-2636.6
2025-06-0234.3
2025-06-0940.1
2025-06-1636.9
2025-06-2335.3
2025-06-3037.4
2025-07-0738.3
2025-07-1436.9
2025-07-2140.1
2025-07-2838.1
2025-08-0438.0
2025-08-1137.3
2025-08-1841.9
2025-08-2536.7
2025-09-0142.6
2025-09-0845.0
2025-09-1539.0
2025-09-2242.7
2025-09-2941.1
2025-10-0639.0
2025-10-1343.7
2025-10-2042.7
2025-10-2739.0
2025-11-0344.1
2025-11-1045.0
2025-11-1740.0
2025-11-2443.3
2025-12-0140.6
2025-12-0841.6
2025-12-1541.3
2025-12-2238.4
2025-12-2935.1
2026-01-0538.0
2026-01-1239.9
2026-01-1938.4
2026-01-2642.7
2026-02-0240.4
2026-02-0942.7
2026-02-1640.3
2026-02-2341.6
2026-03-0242.7
2026-03-0940.1
2026-03-1639.7
2026-03-2342.4
2026-03-3044.9
2026-04-0640.9
2026-04-1338.4
2026-04-2044.1
2026-04-2737.3
2026-05-0439.7
2026-05-1139.1
2026-05-1841.0
2026-05-2539.7
2026-06-0141.3
2026-06-0839.9
2026-06-1537.9
2026-06-2242.6
2026-06-2942.1
2026-07-0641.3
2026-07-1341.6
2026-07-2040.9
2026-07-2741.6
2026-08-0341.0
2026-08-1040.9
2026-08-1742.0
2026-08-2443.0
2026-08-3141.6
2026-09-0737.9
2026-09-1441.9
2026-09-2140.0
2026-09-2843.1
2026-10-0541.7
2026-10-1244.3
2026-10-1941.3

This is a measured change in public data during the event window, compared with a baseline before it. It shows timing, not cause. We describe an event as causing a change only when an official source says so.

Transits, all vessel types, Cape of Good Hope

Baseline (expected)
50.8 transits per day
Observed
70.3 transits per day
Change
+19.5 (+38.3%)
Standardised score
+2.6
Event window
2023-11-19 to 2024-03-17 (120 days, provisional)
Baseline window
2023-09-17 to 2023-11-11 (56 valid days)
Method
wfm-effect-1.0
Computed
2026-09-19 (19 September 2026), data revision 1:761a80e411bb
Transits, all vessel types, Cape of Good HopeTransits, all vessel types, Cape of Good Hope, 2023-09-10 (10 September 2023) to 2026-10-25 (25 October 2026): values ranged from 3 transits per day on 2023-09-16 to 205 transits per day on 2024-07-12, with a mean of 85.2 transits per day. The latest value, for 2026-10-25, was 100 transits per day. The shaded band marks the event window, 2023-11-19 to 2026-10-25.0501001502002502023-09-102025-04-032026-10-25
Transits, all vessel types, Cape of Good Hope, 2023-09-10 (10 September 2023) to 2026-10-25 (25 October 2026): values ranged from 3 transits per day on 2023-09-16 to 205 transits per day on 2024-07-12, with a mean of 85.2 transits per day. The latest value, for 2026-10-25, was 100 transits per day. The shaded band marks the event window, 2023-11-19 to 2026-10-25.

Source: IMF PortWatch (portwatch.imf.org), International Monetary Fund, using UN Global Platform AIS data. Statistics derived by World Freight Monitor. Terms. Retrieved 2026-10-28 (28 October 2026).

Transits, all vessel types, Cape of Good Hope (transits per day). Weekly means, week starting Monday.
Datetransits per day
2023-09-0432.0
2023-09-1142.0
2023-09-1875.4
2023-09-2555.3
2023-10-0250.7
2023-10-0950.9
2023-10-1652.9
2023-10-2347.1
2023-10-3048.6
2023-11-0646.4
2023-11-1351.4
2023-11-2051.4
2023-11-2745.4
2023-12-0445.4
2023-12-1153.3
2023-12-1849.6
2023-12-2559.7
2024-01-0172.4
2024-01-0872.6
2024-01-1570.1
2024-01-2273.0
2024-01-2980.1
2024-02-0578.9
2024-02-1291.3
2024-02-1987.4
2024-02-2693.3
2024-03-0491.6
2024-03-1182.7
2024-03-1879.3
2024-03-2582.9
2024-04-0177.7
2024-04-0884.0
2024-04-15103.1
2024-04-2289.0
2024-04-2988.6
2024-05-0689.9
2024-05-1393.7
2024-05-2091.0
2024-05-2785.4
2024-06-03101.3
2024-06-1097.4
2024-06-1797.1
2024-06-2492.3
2024-07-0182.0
2024-07-08102.3
2024-07-1595.9
2024-07-2279.9
2024-07-29108.9
2024-08-0579.7
2024-08-12101.6
2024-08-19102.9
2024-08-2682.6
2024-09-0289.7
2024-09-0988.9
2024-09-1687.9
2024-09-2384.7
2024-09-3095.4
2024-10-0784.4
2024-10-1483.0
2024-10-2185.4
2024-10-2890.7
2024-11-0479.4
2024-11-1188.6
2024-11-1888.4
2024-11-2574.0
2024-12-0284.1
2024-12-0976.0
2024-12-1683.1
2024-12-2381.9
2024-12-3081.0
2025-01-0681.0
2025-01-1380.7
2025-01-2092.6
2025-01-2781.4
2025-02-0384.0
2025-02-1092.0
2025-02-1791.0
2025-02-2487.7
2025-03-0386.9
2025-03-1076.0
2025-03-1777.1
2025-03-2481.6
2025-03-3179.9
2025-04-0784.1
2025-04-1483.4
2025-04-2188.3
2025-04-2878.7
2025-05-0590.4
2025-05-12109.3
2025-05-1979.0
2025-05-2685.9
2025-06-02100.3
2025-06-0991.3
2025-06-1688.9
2025-06-2381.9
2025-06-30104.6
2025-07-0799.0
2025-07-1499.3
2025-07-2194.0
2025-07-2895.1
2025-08-0486.9
2025-08-11107.4
2025-08-1890.3
2025-08-25105.7
2025-09-0192.0
2025-09-0896.1
2025-09-1596.1
2025-09-2290.9
2025-09-29101.1
2025-10-06100.7
2025-10-1387.1
2025-10-2094.3
2025-10-2787.6
2025-11-0385.0
2025-11-1081.4
2025-11-1790.3
2025-11-2492.1
2025-12-0184.9
2025-12-0886.7
2025-12-1578.9
2025-12-2284.7
2025-12-2986.7
2026-01-0586.7
2026-01-1289.6
2026-01-1986.0
2026-01-2690.3
2026-02-0278.6
2026-02-0986.0
2026-02-1695.9
2026-02-2388.3
2026-03-0292.7
2026-03-0992.4
2026-03-1692.0
2026-03-2390.1
2026-03-3090.7
2026-04-0693.1
2026-04-1395.4
2026-04-2098.3
2026-04-2790.9
2026-05-0488.6
2026-05-11103.0
2026-05-1897.7
2026-05-2594.9
2026-06-0191.6
2026-06-0891.1
2026-06-1595.6
2026-06-2292.1
2026-06-2996.1
2026-07-0690.4
2026-07-1393.0
2026-07-2090.3
2026-07-2788.6
2026-08-0387.3
2026-08-1091.9
2026-08-1791.6
2026-08-2491.9
2026-08-3178.6
2026-09-0790.6
2026-09-1488.6
2026-09-2188.1
2026-09-2887.7
2026-10-0584.0
2026-10-1285.7
2026-10-1987.1

This is a measured change in public data during the event window, compared with a baseline before it. It shows timing, not cause. We describe an event as causing a change only when an official source says so.

Transits, container ships, Bab el-Mandeb Strait

Baseline (expected)
19.6 transits per day
Observed
7.1 transits per day
Change
-12.5 (-63.7%)
Standardised score
-2.9
Event window
2023-11-19 to 2024-03-17 (120 days, provisional)
Baseline window
2023-09-17 to 2023-11-11 (56 valid days)
Method
wfm-effect-1.0
Computed
2026-09-19 (19 September 2026), data revision 1:2dd7cbe9ead3
Transits, container ships, Bab el-Mandeb StraitTransits, container ships, Bab el-Mandeb Strait, 2023-09-10 (10 September 2023) to 2026-10-25 (25 October 2026): values ranged from 0 transits per day on 2024-01-26 to 33 transits per day on 2023-10-06, with a mean of 7.0 transits per day. The latest value, for 2026-10-25, was 9 transits per day. The shaded band marks the event window, 2023-11-19 to 2026-10-25.0102030402023-09-102025-04-032026-10-25
Transits, container ships, Bab el-Mandeb Strait, 2023-09-10 (10 September 2023) to 2026-10-25 (25 October 2026): values ranged from 0 transits per day on 2024-01-26 to 33 transits per day on 2023-10-06, with a mean of 7.0 transits per day. The latest value, for 2026-10-25, was 9 transits per day. The shaded band marks the event window, 2023-11-19 to 2026-10-25.

Source: IMF PortWatch (portwatch.imf.org), International Monetary Fund, using UN Global Platform AIS data. Statistics derived by World Freight Monitor. Terms. Retrieved 2026-10-28 (28 October 2026).

Transits, container ships, Bab el-Mandeb Strait (transits per day). Weekly means, week starting Monday.
Datetransits per day
2023-09-0417.0
2023-09-1119.7
2023-09-1821.7
2023-09-2520.4
2023-10-0220.6
2023-10-0920.3
2023-10-1619.7
2023-10-2319.0
2023-10-3020.0
2023-11-0616.9
2023-11-1321.3
2023-11-2018.3
2023-11-2716.1
2023-12-0414.6
2023-12-1114.1
2023-12-183.9
2023-12-254.1
2024-01-014.7
2024-01-084.0
2024-01-153.7
2024-01-223.0
2024-01-294.6
2024-02-054.1
2024-02-125.7
2024-02-193.9
2024-02-264.4
2024-03-045.1
2024-03-114.6
2024-03-183.4
2024-03-255.1
2024-04-015.3
2024-04-084.1
2024-04-155.3
2024-04-224.7
2024-04-295.3
2024-05-064.6
2024-05-134.9
2024-05-204.7
2024-05-275.3
2024-06-034.9
2024-06-106.7
2024-06-174.7
2024-06-245.0
2024-07-015.0
2024-07-085.4
2024-07-156.3
2024-07-224.3
2024-07-295.7
2024-08-055.1
2024-08-125.9
2024-08-196.6
2024-08-265.9
2024-09-026.1
2024-09-096.0
2024-09-166.0
2024-09-234.4
2024-09-305.4
2024-10-076.9
2024-10-146.4
2024-10-215.9
2024-10-287.0
2024-11-046.3
2024-11-116.9
2024-11-186.7
2024-11-258.0
2024-12-025.9
2024-12-097.6
2024-12-165.7
2024-12-235.9
2024-12-306.7
2025-01-066.9
2025-01-137.7
2025-01-208.0
2025-01-278.1
2025-02-036.3
2025-02-106.9
2025-02-178.4
2025-02-246.3
2025-03-037.3
2025-03-107.4
2025-03-177.1
2025-03-246.9
2025-03-317.3
2025-04-076.3
2025-04-146.9
2025-04-217.3
2025-04-286.3
2025-05-055.7
2025-05-127.6
2025-05-196.7
2025-05-266.9
2025-06-027.9
2025-06-096.6
2025-06-165.4
2025-06-236.4
2025-06-305.7
2025-07-077.7
2025-07-145.0
2025-07-217.7
2025-07-287.1
2025-08-046.3
2025-08-118.3
2025-08-186.1
2025-08-256.3
2025-09-015.7
2025-09-086.4
2025-09-157.1
2025-09-225.9
2025-09-297.6
2025-10-065.4
2025-10-136.6
2025-10-206.6
2025-10-276.7
2025-11-036.6
2025-11-106.4
2025-11-176.3
2025-11-246.1
2025-12-018.0
2025-12-083.3
2025-12-155.7
2025-12-227.0
2025-12-296.0
2026-01-055.4
2026-01-125.7
2026-01-197.0
2026-01-265.4
2026-02-026.1
2026-02-095.0
2026-02-166.6
2026-02-236.1
2026-03-025.3
2026-03-094.6
2026-03-165.4
2026-03-236.0
2026-03-304.7
2026-04-065.6
2026-04-136.0
2026-04-206.6
2026-04-276.3
2026-05-045.6
2026-05-115.4
2026-05-186.1
2026-05-256.3
2026-06-016.0
2026-06-086.1
2026-06-155.6
2026-06-224.4
2026-06-296.0
2026-07-064.9
2026-07-134.9
2026-07-205.4
2026-07-275.1
2026-08-034.0
2026-08-104.9
2026-08-175.1
2026-08-244.1
2026-08-315.0
2026-09-075.9
2026-09-145.0
2026-09-214.9
2026-09-285.3
2026-10-056.3
2026-10-124.7
2026-10-197.3

This is a measured change in public data during the event window, compared with a baseline before it. It shows timing, not cause. We describe an event as causing a change only when an official source says so.

Previous computations (20)
  • 2026-09-22, wfm-effect-1.0, revision 1:8b5b75b1a504: observed 40.4 against baseline 75.7 transits per day
  • 2026-09-19, wfm-effect-1.0, revision 1:ec18ef20d923: observed 39.7 against baseline 75.7 transits per day
  • 2026-09-22, wfm-effect-1.0, revision 1:f04f7db9927d: observed 85.9 against baseline 50.9 transits per day
  • 2026-09-19, wfm-effect-1.0, revision 1:967e65bd610a: observed 84.6 against baseline 50.9 transits per day
  • 2026-09-19, wfm-effect-1.0, revision 1:55fb2926c713: observed 26.4 against baseline 77.6 transits per day
  • 2026-09-22, wfm-effect-1.0, revision 1:7a5f92349a75: observed 25.8 against baseline 77.6 transits per day
  • 2026-09-19, wfm-effect-1.0, revision 1:a3e85c66473f: observed 5.4 against baseline 19.6 transits per day
  • 2026-09-22, wfm-effect-1.0, revision 1:dedc24ba98e8: observed 5.3 against baseline 19.6 transits per day
  • 2026-10-06, wfm-effect-1.0, revision 1:0811384d0504: observed 43.1 against baseline 75.7 transits per day
  • 2026-10-21, wfm-effect-1.0, revision 1:815156dea482: observed 43.0 against baseline 75.7 transits per day
  • 2026-10-18, wfm-effect-1.0, revision 1:8ea2cdfce941: observed 42.4 against baseline 75.7 transits per day
  • 2026-10-06, wfm-effect-1.0, revision 1:5ee68deffd99: observed 29.6 against baseline 77.6 transits per day
  • 2026-10-18, wfm-effect-1.0, revision 1:959d44c1e5dd: observed 28.9 against baseline 77.6 transits per day
  • 2026-10-21, wfm-effect-1.0, revision 1:9fb18a7af7a0: observed 28.1 against baseline 77.6 transits per day
  • 2026-10-06, wfm-effect-1.0, revision 1:337ec009035a: observed 87.7 against baseline 50.9 transits per day
  • 2026-10-21, wfm-effect-1.0, revision 1:0e0dd8a02e66: observed 85.8 against baseline 50.9 transits per day
  • 2026-10-18, wfm-effect-1.0, revision 1:63b0f205b494: observed 85.9 against baseline 50.9 transits per day
  • 2026-10-06, wfm-effect-1.0, revision 1:28805271f065: observed 5.3 against baseline 19.6 transits per day
  • 2026-10-18, wfm-effect-1.0, revision 1:4be311f44ac1: observed 5.8 against baseline 19.6 transits per day
  • 2026-10-21, wfm-effect-1.0, revision 1:d2bf55c4ad1e: observed 5.4 against baseline 19.6 transits per day

Sources