Sea Ledger, August 2024

2024-08-01 to 2024-08-31 · gap

issued
62
warning-days in force
13,374
in force at month end
439
sea × type cells
146

Coverage note: the NGA archive ends 2024-05 and live collection began 2026-08-17. Warnings issued in between are here only if they were still in force when collection started, so this period is under-counted.

baseline: same month, previous 5 years — not available for this month (needs three fully collected reference months)

By type

typeissuedwarning-daysin force at end
Quakes2298.13
Spills163508
Nav aids115,531.2181
Surveys42,182.572
Exercises3246.310
Cable ops31,002.135
Missiles21878
Wrecks11,854.760
Other096131
Mines01244
Incidents0311
Restricted0311
Derelicts0933
Towing0622
Debris0311
Icebergs0311
War risk0622
Structures0311
Volcanic037212
Ordnance0933

By sea and type · 146 cells, most issued first

cellissuedwarning-daysvs 5 y
Quakes · South Pacific Ocean621.7
Quakes · North Pacific Ocean616.8
Quakes · Philippine Sea515
Spills · The Coastal Waters of Southeast Alaska and British Columbia448
Nav aids · North Atlantic Oceanlong running3608.2
Spills · Gulf of Mexico372
Spills · North Pacific Ocean325
Nav aids · South Atlantic Oceanlong running2784.9
Spills · North Atlantic Oceanlong running257
Cable ops · Celtic Sea238.6
Exercises · North Atlantic Ocean212.9
Nav aids · South Pacific Oceanlong running1367.8
Nav aids · Gulf of Mexicolong running1339.4
Surveys · Indian Oceanlong running1220.6
Nav aids · South China Sea1203.6
Wrecks · South Atlantic Ocean1180.7
Nav aids · Arabian Sealong running1159.3
Cable ops · Persian Gulflong running1157.5
Missiles · North Atlantic Ocean1124.5
Nav aids · Bering Sealong running1112.2
Surveys · Persian Gulflong running1103.3
Spills · Caribbean Sea182
Nav aids · Gulf of Alaska172.8
Surveys · Black Sea157.5
Exercises · Gulf of Mexico147.4
Spills · Bering Sea121
Spills · Beaufort Sea114
Spills · Red Sea19
Surveys · Bay of Bengal14.1
Quakes · Banda Sea13
Quakes · Indian Ocean13
Quakes · Sea of Okhotsk13
Quakes · South Atlantic Ocean13
Quakes · North Atlantic Ocean11.6
Missiles · Indian Ocean10.5
Nav aids · Caribbean Sealong running01,178
Surveys · North Atlantic Ocean0372
Cable ops · North Atlantic Ocean0341
Volcanic · Philippine Sealong running0310
Other · Gulf of Mexico0279
Nav aids · North Pacific Oceanlong running0279
Wrecks · Arabian Sealong running0248
Other · Caribbean Sealong running0217
Surveys · The Northwestern Passageslong running0217
Wrecks · North Atlantic Ocean0186
Wrecks · Persian Gulflong running0186
Surveys · South Pacific Ocean0186
Wrecks · The Northwestern Passageslong running0186
Nav aids · Andaman or Burma Sealong running0155
Wrecks · Caribbean Sealong running0155
Surveys · South Atlantic Oceanlong running0155
Mines · Black Sealong running0124
Nav aids · Celtic Sea0124
Nav aids · English Channel0124
Exercises · Aegean Sea093
Surveys · Arctic Ocean093
Nav aids · Bay of Biscaylong running093
Ordnance · Bay of Biscaylong running093
Nav aids · Beaufort Sealong running093
Surveys · Caribbean Sea093
Nav aids · Hudson Straitlong running093
Nav aids · Indian Oceanlong running093
Cable ops · Philippine Sea093
Wrecks · South China Sealong running093
Wrecks · South Pacific Oceanlong running093
Surveys · Timor Sea093
Nav aids · Arafura Sea062
Wrecks · Bay of Bengallong running062
Other · Bay of Biscaylong running062
Surveys · Bay of Biscay062
Exercises · Black Sealong running062
War risk · Black Sealong running062
Surveys · Chukchi Sealong running062
Wrecks · Coral Sealong running062
Cable ops · Indian Ocean062
Other · Indian Ocean062
Nav aids · Irish Sea and St. George's Channel062
Surveys · Kara Sealong running062
Wrecks · Kara Sea062
Nav aids · Laccadive Sealong running062
Other · North Atlantic Ocean062
Other · North Pacific Ocean062
Towing · North Pacific Ocean062
Volcanic · North Pacific Ocean062
Wrecks · North Pacific Oceanlong running062
Nav aids · North Sea062
Nav aids · Persian Gulflong running062
Other · Persian Gulflong running062
Surveys · Sea of Okhotsk062
Cable ops · South China Sea062
Cable ops · Sulu Sea062
Nav aids · Tasman Sea062
Missiles · Aegean Sea031
Wrecks · Arafura Sea031
Nav aids · Arctic Ocean031
Derelicts · Bass Strait031
Surveys · Bass Strait031
Other · Bay of Bengallong running031
Debris · Bay of Biscaylong running031
Wrecks · Bay of Biscay031
Other · Beaufort Sea031
Surveys · Beaufort Sealong running031
Other · Black Sea031
Cable ops · Caribbean Sea031
Derelicts · Caribbean Sea031
Exercises · Caribbean Sea031
Surveys · Celtic Sea031
Quakes · Coral Sea031
Nav aids · Coral Sea031
Wrecks · Eastern China Sealong running031
Wrecks · English Channel031
Nav aids · Gulf of Californialong running031
Cable ops · Gulf of Guinea031
Surveys · Gulf of Mexico031
Wrecks · Gulf of Mexicolong running031
Nav aids · Gulf of Oman031
Wrecks · Gulf of Suez031
Nav aids · Hudson Bay031
Wrecks · Hudson Baylong running031
Restricted · Indian Ocean031
Other · Irish Sea and St. George's Channel031
Surveys · Irish Sea and St. George's Channel031
Wrecks · Irish Sea and St. George's Channel031
Cable ops · Java Sea031
Icebergs · Labrador Sea031
Surveys · Laccadive Sealong running031
Wrecks · Laccadive Sealong running031
Cable ops · Ligurian Sea031
Nav aids · Mediterranean Sea - Eastern Basinlong running031
Other · Mediterranean Sea - Eastern Basin031
Surveys · Mediterranean Sea - Eastern Basin031
Cable ops · Mediterranean Sea - Western Basin031
Structures · Mozambique Channellong running031
Derelicts · North Atlantic Ocean031
Incidents · North Atlantic Ocean031
Missiles · North Pacific Oceanlong running031
Surveys · Norwegian Sea031
Nav aids · Philippine Sea031
Surveys · South China Sea031
Surveys · Tasman Sea031
Nav aids · The Coastal Waters of Southeast Alaska and British Columbialong running031
Nav aids · The Northwestern Passages031
Cable ops · Timor Sea031
Surveys · Mediterranean Sea - Western Basin030
Spills · Gulf of Alaska011
Spills · South China Sea011

Cite: seahazards.com Sea Ledger, 2024-08, retrieved 2026-09-03

Not for navigation. Warning-days = days each warning was in force within the month, summed. Only warnings we display are counted; the ratio compares warnings issued with the mean of the reference months.

Sea Ledger, August 2024 — warnings by sea and type · seahazards