Sea Ledger, August 2022

2022-08-01 to 2022-08-31 · archive

issued: 754
warning-days in force: 12,371
in force at month end: 421
sea × type cells: 229

baseline: same month, previous 5 years (2021-08, 2020-08, 2019-08, 2018-08, 2017-08)

By type

type	issued	warning-days	in force at end
Exercises	152	1,218.4	43
Incidents	134	1,424.8	52
Icebergs	109	125.5	5
Surveys	84	2,337.3	81
Missiles	62	420.4	11
Nav aids	58	3,896.8	128
Quakes	31	91.9	6
Other	24	553.8	18
Cable ops	23	396.8	15
Spills	22	303.9	5
Towing	17	15.6	2
Derelicts	14	161.4	6
Wrecks	9	920.8	32
Debris	8	54.4	2
Piracy	2	4	0
Structures	1	70.7	3
Restricted	1	38.6	1
Containers	1	3	0
Ordnance	1	53.5	2
Volcanic	1	186.2	6
Mines	0	62	2
War risk	0	31	1

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Icebergs · Southern Oceansurge	67	67.3	2	31	2.6× / 25.8
Exercises · North Pacific Oceansurge	46	373.8	12	64	2.0× / 22.4
Icebergs · Labrador Sea	36	44.6	3	32	1.6× / 22.6
Incidents · South China Sea	22	186.8	8	180	0.7× / 30
Incidents · North Atlantic Oceansurge	17	289.3	10	201	2.4× / 7.2
Exercises · North Atlantic Ocean	17	75.4	3	39	2.0× / 8.6
Towing · North Pacific Oceansurge	17	15.6	2	31	4.3× / 4
Surveys · South Atlantic Ocean	16	154.2	2	53	1.1× / 14.8
Missiles · South Pacific Oceansurge	16	108.9	3	34	3.1× / 5.2
Missiles · North Atlantic Ocean	15	56.5	1	71	1.5× / 10.2
Surveys · Persian Gulfsurgelong running	13	312	11	590	2.4× / 5.4
Exercises · South Atlantic Ocean	13	138.9	2	62	1.3× / 9.8
Incidents · North Pacific Ocean	13	134.4	5	34	0.6× / 20.2
Exercises · Celtic Seasurge	12	17.2	1	28	30× / 0.4
Incidents · Indian Oceansurge	11	94.5	3	44	2.4× / 4.6
Missiles · North Pacific Oceansurgelong running	11	79	2	442	2.0× / 5.4
Quakes · South Pacific Ocean	11	29.5	3	29	1.1× / 9.6
Incidents · Arabian Seasurge	10	103.1	2	28	5.0× / 2
Incidents · Laccadive Seasurge	9	103.6	3	30	3.2× / 2.8
Spills · North Seanew	9	26.4	1	24	new / 0
Surveys · North Sea	8	133.8	6	116	1.7× / 4.8
Exercises · Philippine Sea	8	25.6	1	29	1.3× / 6
Surveys · North Atlantic Ocean	7	601.2	20	246	1.0× / 6.8
Surveys · The Northwestern Passagessurge	7	66.7	5	15	18× / 0.4
Exercises · Bay of Bengal	7	60.1	1	33	0.8× / 9.2
Incidents · South Pacific Ocean	7	40	0	—	0.9× / 7.8
Exercises · South Pacific Ocean	7	31	0	—	0.8× / 9
Exercises · Arabian Sea	7	28.2	1	29	1.1× / 6.4
Cable ops · North Atlantic Ocean	6	98.8	5	73	0.9× / 6.8
Incidents · Mediterranean Sea - Eastern Basin	6	95.5	3	35	1.3× / 4.8
Surveys · Caribbean Seasurge	6	46	1	35	2.3× / 2.6
Exercises · Andaman or Burma Sea	6	24.9	1	33	1.9× / 3.2
Nav aids · North Atlantic Oceanlong running	5	295.2	10	503	0.8× / 6.2
Nav aids · Celtic Seasurge	5	78.4	3	46	6.3× / 0.8
Other · Black Seasurge	5	61.8	3	29	25× / 0.2
Incidents · Caribbean Seasurge	5	54.5	2	33	3.6× / 1.4
Missiles · Barentsz Sea	5	44	0	—	1.2× / 4.2
Exercises · Indian Ocean	5	9	3	33	1.5× / 3.4
Nav aids · South Atlantic Ocean	4	775.1	24	208	0.6× / 7
Nav aids · South Pacific Oceanlong running	4	693.1	22	407	0.8× / 4.8
Nav aids · Caribbean Sealong running	4	584.5	20	561	1.4× / 2.8
Nav aids · North Pacific Oceanlong running	4	386.8	13	516	0.9× / 4.6
Nav aids · Gulf of Mexicolong running	4	239.3	7	516	1.4× / 2.8
Surveys · Kara Sea	4	221.4	7	64	1.8× / 2.2
Nav aids · North Sea	4	137.3	4	83	0.5× / 8.2
Exercises · Barentsz Seasurge	4	92.6	3	123	2.5× / 1.6
Nav aids · English Channel	4	77.7	2	63	1.5× / 2.6
Spills · Gulf of Mexico	4	66	0	—	0.6× / 6.8
Spills · North Pacific Ocean	4	55	1	35	1.1× / 3.6
Incidents · Coral Sea	4	36.2	1	26	0.9× / 4.2
Exercises · Japan Seasurge	4	32.6	2	32	2.5× / 1.6
Exercises · Caribbean Seasurge	4	32.4	4	175	2.0× / 2
Missiles · Norwegian Seasurge	4	7.8	1	16	6.7× / 0.6
Surveys · Sea of Okhotsk	3	91.6	3	80	1.5× / 2
Surveys · Norwegian Sea	3	90.3	3	60	1.9× / 1.6
Spills · North Atlantic Ocean	3	77.5	2	44	1.1× / 2.8
Surveys · Bay of Biscaynew	3	63.7	3	203	new / 0
Nav aids · Hudson Baysurge	3	45.2	2	43	3.8× / 0.8
Other · North Pacific Ocean	3	43	1	27	0.4× / 7.4
Incidents · Bay of Biscaysurge	3	37.5	1	28	15× / 0.2
Nav aids · Inner Seas off the West Coast of Scotland	3	34.1	1	67	1.1× / 2.8
Surveys · Arabian Seasurge	3	31.3	1	42	3.8× / 0.8
Incidents · Java Seasurge	3	30.8	1	19	2.1× / 1.4
Exercises · Laccadive Sea	3	29.7	1	30	1.5× / 2
Missiles · Laccadive Seasurge	3	23.1	1	26	3.8× / 0.8
Derelicts · Arabian Sea	3	19.6	1	25	1.9× / 1.6
Incidents · Bismarck Seasurge	3	19.6	1	14	2.5× / 1.2
Incidents · Timor Seasurge	3	12.2	1	21	7.5× / 0.4
Incidents · Mediterranean Sea - Western Basinsurge	3	11.9	3	4	5.0× / 0.6
Derelicts · North Pacific Ocean	3	11.2	1	41	1.7× / 1.8
Quakes · North Pacific Ocean	3	10	0	—	0.6× / 5.4
Quakes · Indian Ocean	3	8.9	1	8	1.0× / 3
Cable ops · Gulf of Alaskanew	3	7	1	11	new / 0
Icebergs · Kara Sea	3	6.1	0	—	1.9× / 1.6
Surveys · Indian Oceanlong running	2	119.7	5	561	1.1× / 1.8
Spills · The Coastal Waters of Southeast Alaska and British Columbia	2	39	0	—	1.7× / 1.2
Other · North Atlantic Ocean	2	38.6	1	31	3.3× / 0.6
Wrecks · Coral Seanew	2	32	2	61	new / 0
Nav aids · Beaufort Sea	2	30.1	1	40	3.3× / 0.6
Incidents · Mozambique Channel	2	28.6	2	17	2.0× / 1
Incidents · South Atlantic Ocean	2	24.6	2	42	0.5× / 4
Cable ops · Bering Seanew	2	24.5	1	36	new / 0
Surveys · South Pacific Ocean	2	24	1	49	1.4× / 1.4
Other · Gulf of Mexico	2	21.4	1	28	3.3× / 0.6
Incidents · Hudson Baynew	2	18.2	0	—	new / 0
Cable ops · Bay of Bengalnew	2	16.2	1	20	new / 0
Missiles · Sea of Okhotsk	2	15.5	0	—	10× / 0.2
Incidents · Philippine Sea	2	12.6	1	34	0.5× / 4.4
Missiles · Kara Seanew	2	11	2	6	new / 0
Quakes · Banda Sea	2	6	0	—	5.0× / 0.4
Debris · Barentsz Seanew	2	6	0	—	new / 0
Quakes · Celebes Sea	2	6	0	—	3.3× / 0.6
Quakes · Coral Sea	2	6	0	—	0.9× / 2.2
Quakes · Molukka Seanew	2	6	0	—	new / 0
Derelicts · South Atlantic Ocean	2	6	0	—	5.0× / 0.4
Debris · Bay of Biscaynew	2	5.4	1	5	new / 0
Quakes · Philippine Sea	2	4.9	2	2	1.0× / 2
Other · Gulf of Alaskanew	2	2.9	0	—	new / 0
Nav aids · The Northwestern Passages	2	2.9	2	39	0.8× / 2.4
Exercises · Bay of Biscay	2	2.4	1	22	3.3× / 0.6
Volcanic · Philippine Sealong running	1	186.2	6	621	1.0× / 1
Wrecks · Caribbean Sea	1	124	4	312	5.0× / 0.2
Wrecks · Arabian Sea	1	115.4	4	102	1.0× / 1
Wrecks · The Northwestern Passages	1	63.3	3	363	0.8× / 1.2
Wrecks · North Sea	1	62	2	263	0.7× / 1.4
Cable ops · Persian Gulflong running	1	62	2	384	1.7× / 0.6
Surveys · Barentsz Sea	1	61.2	2	51	1.3× / 0.8
Derelicts · Laccadive Sea	1	58.5	2	70	1.3× / 0.8
Ordnance · North Sea	1	53.5	2	209	0.8× / 1.2
Other · Arabian Sea	1	47.5	2	356	1.3× / 0.8
Surveys · Gulf of Mexico	1	45.1	2	141	2.5× / 0.4
Surveys · Arctic Ocean	1	39.6	2	32	1.3× / 0.8
Derelicts · Bay of Bengal	1	38.6	1	75	0.6× / 1.8
Nav aids · Bay of Biscay	1	31.9	2	33	5.0× / 0.2
Wrecks · North Pacific Ocean	1	30.2	1	30	5.0× / 0.2
Cable ops · Gulf of Thailand	1	28.6	0	—	new / 0
Cable ops · North Sea	1	28.4	0	—	0.4× / 2.4
Nav aids · Arctic Ocean	1	28.1	1	28	new / 0
Other · Persian Gulf	1	27.3	1	27	new / 0
Other · The Northwestern Passages	1	27.3	1	27	1.7× / 0.6
Cable ops · North Pacific Ocean	1	27	1	38	0.4× / 2.8
Exercises · Gulf of Mexico	1	26.6	0	—	0.7× / 1.4
Other · Norwegian Sea	1	23.4	1	23	5.0× / 0.2
Incidents · Gulf of Mexico	1	22.6	1	43	0.6× / 1.6
Cable ops · Barentsz Sea	1	21.6	1	21	new / 0
Missiles · East Siberian Sea	1	20.9	0	—	new / 0
Surveys · North Pacific Ocean	1	20.6	0	—	1.3× / 0.8
Wrecks · Bay of Bengal	1	19.1	1	37	5.0× / 0.2
Cable ops · South Atlantic Ocean	1	18.5	1	43	0.5× / 2
Incidents · Andaman or Burma Sea	1	18.4	0	—	5.0× / 0.2
Incidents · Ionian Sea	1	17.7	0	—	2.5× / 0.4
Derelicts · Mediterranean Sea - Eastern Basin	1	16.2	1	33	1.0× / 1
Missiles · South Atlantic Ocean	1	14.2	0	—	1.7× / 0.6
Surveys · Coral Sea	1	13.8	1	13	5.0× / 0.2
Surveys · Mediterranean Sea - Western Basin	1	13.5	1	13	1.7× / 0.6
Surveys · Celtic Sea	1	12.6	0	—	1.0× / 1
Nav aids · Bay of Bengal	1	11.8	0	—	1.3× / 0.8
Nav aids · Norwegian Sea	1	11.1	1	11	1.7× / 0.6
Nav aids · Strait of Gibraltar	1	10.2	0	—	5.0× / 0.2
Incidents · Solomon Sea	1	9.8	1	9	1.0× / 1
Cable ops · Gulf of Guinea	1	9.6	0	—	new / 0
Cable ops · Arabian Sea	1	8.8	0	—	1.7× / 0.6
Cable ops · South China Sea	1	8.8	1	8	0.7× / 1.4
Structures · Persian Gulf	1	8.7	1	8	new / 0
Exercises · Gulf of California	1	8.6	0	—	5.0× / 0.2
Wrecks · English Channel	1	7.8	0	—	2.5× / 0.4
Restricted · Barentsz Sea	1	7.6	0	—	5.0× / 0.2
Exercises · Red Sea	1	6.3	0	—	new / 0
Cable ops · Philippine Sea	1	6	0	—	new / 0
Incidents · Alboran Sea	1	5	1	5	new / 0
Missiles · Japan Sea	1	4.7	0	—	1.7× / 0.6
Exercises · South China Sea	1	4.3	0	—	0.4× / 2.6
Other · Solomon Sea	1	4	0	—	5.0× / 0.2
Nav aids · Tasman Sea	1	4	0	—	1.0× / 1
Missiles · Arctic Ocean	1	3.8	0	—	0.8× / 1.2
Nav aids · Bering Sea	1	3.4	0	—	5.0× / 0.2
Containers · Arafura Sea	1	3	0	—	new / 0
Other · Arafura Sea	1	3	0	—	new / 0
Icebergs · Barentsz Sea	1	3	0	—	5.0× / 0.2
Quakes · Bismarck Sea	1	3	0	—	1.0× / 1
Debris · Caribbean Sea	1	3	0	—	new / 0
Derelicts · Caribbean Sea	1	3	0	—	1.3× / 0.8
Debris · Coral Sea	1	3	0	—	2.5× / 0.4
Debris · Gulf of Mexico	1	3	0	—	new / 0
Other · Indian Ocean	1	3	0	—	1.7× / 0.6
Icebergs · Laptev Sea	1	3	0	—	0.4× / 2.4
Debris · Mozambique Channel	1	3	0	—	new / 0
Other · Mozambique Channel	1	3	0	—	2.5× / 0.4
Derelicts · North Atlantic Ocean	1	3	0	—	0.3× / 4
Quakes · Solomon Sea	1	3	0	—	0.8× / 1.2
Quakes · South Atlantic Ocean	1	3	0	—	0.1× / 9.2
Piracy · South Atlantic Ocean	1	3	0	—	new / 0
Derelicts · South Pacific Ocean	1	3	0	—	0.6× / 1.8
Quakes · Southern Ocean	1	3	0	—	0.3× / 3
Nav aids · Coral Sea	1	2.5	0	—	0.4× / 2.8
Exercises · Eastern China Sea	1	2.1	0	—	new / 0
Exercises · Laptev Sea	1	1.7	1	1	1.0× / 1
Icebergs · East Siberian Sea	1	1.5	0	—	new / 0
Nav aids · Baltic Sea	1	1.3	0	—	new / 0
Exercises · Bering Sea	1	1.1	0	—	1.0× / 1
Piracy · Gulf of Guinea	1	1	0	—	0.7× / 1.4
Incidents · Makassar Strait	1	0.8	0	—	new / 0
Other · Bay of Biscay	1	0.6	0	—	5.0× / 0.2
Incidents · Gulf of Thailand	1	0.4	0	—	1.3× / 0.8
Other · South Pacific Ocean	1	0.1	0	—	new / 0
Nav aids · Davis Strait	1	0	0	—	0.5× / 2.2
Wrecks · South Atlantic Ocean	0	126	4	116	0.0× / 1
Wrecks · South China Sealong running	0	124	4	1,273	0.0× / 1
Exercises · Aegean Sea	0	93	3	240	0.0× / 0.4
Wrecks · Persian Gulflong running	0	93	3	546	0.0× / 0.2
Other · South Atlantic Ocean	0	93	3	124	— / 0
Nav aids · Andaman or Burma Sealong running	0	62	2	604	0.0× / 0.4
Nav aids · Arabian Sea	0	62	2	308	0.0× / 2
Mines · Black Sea	0	62	2	188	— / 0
Other · Caribbean Sea	0	62	2	307	0.0× / 0.6
Nav aids · Gulf of Californialong running	0	62	2	561	— / 0
Exercises · Ionian Sea	0	62	2	240	— / 0
Wrecks · North Atlantic Oceanlong running	0	62	2	462	0.0× / 0.4
Structures · South Atlantic Ocean	0	62	2	33	0.0× / 0.8
Surveys · Japan Sea	0	51	1	37	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2022-08, 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.