Sea Ledger, November 2022

2022-11-01 to 2022-11-30 · archive

issued: 780
warning-days in force: 14,059
in force at month end: 463
sea × type cells: 249

baseline: same month, previous 5 years (2021-11, 2020-11, 2019-11, 2018-11, 2017-11)

By type

type	issued	warning-days	in force at end
Exercises	179	1,238.5	33
Incidents	120	1,919.9	74
Surveys	102	3,070.5	97
Icebergs	89	97.9	4
Nav aids	85	3,992	129
Quakes	42	119.7	4
Missiles	39	275.1	6
Cable ops	21	520.2	17
Derelicts	21	246.3	11
Towing	21	20.7	1
Other	17	530.6	21
Spills	14	207.1	6
Debris	11	93.7	2
Storms	6	7.7	0
Wrecks	5	1,251.4	42
Restricted	3	40.6	1
Containers	3	7.2	1
Piracy	1	0.1	0
Ordnance	1	60	2
Volcanic	0	210	7
Mines	0	60	2
Structures	0	60	2
War risk	0	30	1

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Icebergs · Southern Ocean	51	48.9	2	30	1.8× / 28.4
Exercises · North Pacific Oceansurge	49	321.7	12	64	2.2× / 22.2
Surveys · South Atlantic Oceansurge	39	414.1	11	86	2.4× / 16.4
Incidents · North Atlantic Oceansurge	31	635.7	25	292	3.0× / 10.4
Icebergs · Labrador Sea	28	32.9	2	31	1.4× / 20.8
Surveys · Arabian Seasurge	27	384.5	16	55	5.0× / 5.4
Towing · North Pacific Oceansurge	21	20.7	1	30	5.5× / 3.8
Exercises · South Pacific Ocean	20	87.1	1	33	1.8× / 11.4
Exercises · South Atlantic Ocean	17	137.4	1	153	1.2× / 14.2
Missiles · North Atlantic Ocean	17	64	1	33	1.4× / 12.4
Exercises · Bay of Bengal	16	92.1	3	33	1.3× / 12.4
Exercises · Celtic Seasurge	16	16.4	0	—	40× / 0.4
Incidents · North Pacific Ocean	13	214.6	11	40	0.9× / 14
Incidents · South China Sea	12	208.5	5	271	0.4× / 27.4
Quakes · South Pacific Ocean	12	36.1	0	—	1.0× / 12.4
Exercises · Arabian Sea	11	87.1	2	32	1.0× / 11
Nav aids · South Atlantic Ocean	10	782.7	25	207	1.3× / 7.6
Nav aids · North Sea	10	124	6	174	1.1× / 9
Nav aids · South Pacific Oceansurgelong running	9	495.7	16	498	3.0× / 3
Incidents · Mediterranean Sea - Eastern Basin	9	292.5	7	41	1.9× / 4.8
Surveys · Bay of Bengalsurge	9	129.4	5	57	2.3× / 4
Exercises · Laccadive Seasurge	9	50.7	1	29	3.5× / 2.6
Spills · Gulf of Mexico	8	87	3	27	1.7× / 4.6
Surveys · North Atlantic Ocean	7	805	26	337	1.2× / 6
Exercises · North Atlantic Ocean	7	85.2	3	96	1.3× / 5.6
Incidents · Gulf of Thailandsurge	7	35.8	3	12	3.2× / 2.2
Surveys · Persian Gulflong running	6	322.9	9	681	0.8× / 7.8
Incidents · Gulf of Mexicosurge	6	87.2	6	38	4.3× / 1.4
Nav aids · English Channel	6	46.3	0	—	1.9× / 3.2
Nav aids · Inner Seas off the West Coast of Scotland	6	26.1	1	30	1.6× / 3.8
Quakes · North Pacific Ocean	6	18	0	—	1.2× / 5
Quakes · Solomon Seasurge	6	15.1	0	—	10× / 0.6
Storms · North Atlantic Oceansurge	6	7.7	0	—	10× / 0.6
Nav aids · North Pacific Oceanlong running	5	432.9	13	607	1.4× / 3.6
Incidents · Philippine Seasurge	5	44.7	1	46	2.1× / 2.4
Incidents · Indian Ocean	5	36.2	1	30	1.0× / 4.8
Exercises · Bay of Biscaynew	5	12.6	0	—	new / 0
Icebergs · South Atlantic Ocean	5	4.7	0	—	0.2× / 23.8
Nav aids · Caribbean Sealong running	4	722.6	23	652	1.3× / 3
Nav aids · North Atlantic Oceanlong running	4	248	8	594	0.7× / 5.6
Incidents · South Atlantic Ocean	4	82.3	3	30	0.7× / 5.6
Cable ops · South China Seasurge	4	47.6	1	31	2.9× / 1.4
Incidents · Java Seasurge	4	27.7	1	36	2.9× / 1.4
Missiles · Indian Ocean	4	25.6	2	11	0.7× / 5.4
Derelicts · North Atlantic Ocean	4	25.4	1	24	1.1× / 3.8
Nav aids · Norwegian Seanew	4	21.7	2	18	new / 0
Exercises · Gulf of Mexicosurge	4	19.8	0	—	2.5× / 1.6
Exercises · Andaman or Burma Seasurge	4	13.5	1	23	4.0× / 1
Incidents · Bay of Bengalsurge	4	8.4	1	29	4.0× / 1
Spills · North Atlantic Ocean	3	96	2	132	1.4× / 2.2
Cable ops · North Atlantic Ocean	3	89.4	3	164	0.6× / 5
Surveys · Andaman or Burma Seasurge	3	73	2	35	2.5× / 1.2
Nav aids · Irish Sea and St. George's Channel	3	62.5	3	153	1.9× / 1.6
Surveys · Caribbean Sea	3	60	2	35	1.4× / 2.2
Missiles · North Pacific Oceanlong running	3	52.2	1	533	0.8× / 4
Nav aids · Arafura Seasurge	3	35.8	1	147	7.5× / 0.4
Surveys · North Pacific Oceansurge	3	34.5	0	—	15× / 0.2
Cable ops · Mediterranean Sea - Western Basinsurge	3	26.8	1	14	5.0× / 0.6
Incidents · Arafura Seasurge	3	19.3	1	26	3.8× / 0.8
Exercises · Japan Seasurge	3	18.1	1	34	2.1× / 1.4
Exercises · Barentsz Seasurge	3	17.6	1	139	2.1× / 1.4
Incidents · South Pacific Ocean	3	16.4	1	35	0.5× / 6.2
Nav aids · Coral Sea	3	14	0	—	1.0× / 3
Missiles · Arctic Oceansurge	3	11.2	1	11	3.0× / 1
Derelicts · North Pacific Ocean	3	10.7	0	—	1.5× / 2
Quakes · South Atlantic Ocean	3	9	0	—	0.9× / 3.2
Quakes · North Atlantic Oceansurge	3	5.2	3	2	3.8× / 0.8
Derelicts · Caribbean Seasurge	3	3.6	2	16	2.5× / 1.2
Nav aids · Davis Straitsurge	3	1.4	0	—	2.1× / 1.4
Incidents · Coral Sea	3	0.7	0	—	0.8× / 3.6
Nav aids · Celtic Sea	2	85.9	3	103	2.0× / 1
Nav aids · Persian Gulf	2	45.7	3	190	5.0× / 0.4
Other · North Atlantic Ocean	2	40.1	2	72	2.0× / 1
Surveys · Timor Sea	2	33.8	1	56	5.0× / 0.4
Missiles · Barentsz Sea	2	22.6	0	—	0.2× / 8.6
Other · English Channel	2	21.5	0	—	5.0× / 0.4
Cable ops · Malacca Strait	2	17.9	0	—	10× / 0.2
Incidents · Laccadive Sea	2	13.7	1	45	0.7× / 3
Exercises · Tasman Sea	2	13.3	0	—	10× / 0.2
Missiles · Norwegian Sea	2	12.8	0	—	2.0× / 1
Exercises · Gulf of California	2	10.3	0	—	5.0× / 0.4
Missiles · Bay of Bengal	2	9.3	0	—	10× / 0.2
Exercises · Adriatic Sea	2	8.5	0	—	3.3× / 0.6
Derelicts · Indian Ocean	2	8	0	—	0.4× / 4.6
Exercises · Indian Ocean	2	7.6	0	—	1.4× / 1.4
Debris · Barentsz Seanew	2	6.7	0	—	new / 0
Missiles · South China Sea	2	6.6	0	—	5.0× / 0.4
Other · Gulf of Mexico	2	6.3	2	3	5.0× / 0.4
Quakes · Indian Ocean	2	6	0	—	1.4× / 1.4
Icebergs · Kara Sea	2	6	0	—	10× / 0.2
Quakes · Southern Ocean	2	6	0	—	3.3× / 0.6
Other · Red Seanew	2	5.6	0	—	new / 0
Spills · English Channelnew	2	4.1	1	17	new / 0
Icebergs · Davis Strait	2	2.4	0	—	0.2× / 9.2
Nav aids · Adriatic Seanew	2	1.6	0	—	new / 0
Other · Indian Ocean	2	0.3	0	—	10× / 0.2
Nav aids · Gulf of Mexicolong running	1	212.2	7	607	1.0× / 1
Wrecks · South Atlantic Ocean	1	150	5	207	new / 0
Wrecks · South China Sealong running	1	121	4	1,364	0.5× / 2
Wrecks · Persian Gulflong running	1	117.7	4	637	1.7× / 0.6
Nav aids · Arabian Sealong running	1	103.5	3	399	1.3× / 0.8
Surveys · Indian Oceanlong running	1	86	3	652	0.5× / 2.2
Incidents · Arabian Sea	1	62.7	1	42	0.3× / 3.4
Derelicts · Laccadive Sea	1	61.4	3	161	0.8× / 1.2
Ordnance · North Sea	1	60	2	300	0.8× / 1.2
Other · Black Sea	1	53.1	1	120	new / 0
Nav aids · Hudson Bay	1	52.7	1	77	5.0× / 0.2
Exercises · Black Sea	1	41	1	252	0.1× / 15.8
Derelicts · Arabian Sea	1	35.8	2	104	1.7× / 0.6
Derelicts · Bay of Bengal	1	33	1	166	0.3× / 3.8
Derelicts · South Pacific Ocean	1	33	1	58	0.5× / 2.2
Other · South Pacific Ocean	1	30	1	67	2.5× / 0.4
Surveys · Gulf of Guinea	1	29.1	1	29	5.0× / 0.2
Cable ops · Black Sea	1	29	1	29	new / 0
Cable ops · Arabian Sea	1	28.1	0	—	1.7× / 0.6
Nav aids · Indian Ocean	1	26.9	1	73	1.3× / 0.8
Incidents · Mediterranean Sea - Western Basin	1	26.7	1	41	1.3× / 0.8
Cable ops · North Sea	1	26.2	1	26	0.8× / 1.2
Cable ops · Gulf of Suez	1	24.4	0	—	new / 0
Incidents · Bay of Biscay	1	23.6	1	23	new / 0
Incidents · Tyrrhenian Sea	1	22.7	1	45	5.0× / 0.2
Nav aids · Barentsz Sea	1	19	1	18	new / 0
Incidents · Ligurian Sea	1	19	1	19	new / 0
Exercises · Red Sea	1	17.3	0	—	5.0× / 0.2
Missiles · Japan Sea	1	14.9	0	—	0.6× / 1.8
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	14	0	—	1.0× / 1
Cable ops · Celtic Sea	1	12.7	1	12	0.3× / 3
Wrecks · Kara Sea	1	12.7	1	12	2.5× / 0.4
Other · Andaman or Burma Sea	1	12.5	1	12	new / 0
Other · Mediterranean Sea - Western Basin	1	11.4	1	11	2.5× / 0.4
Incidents · Mozambique Channel	1	11.1	1	11	2.5× / 0.4
Wrecks · Indian Ocean	1	10	0	—	1.7× / 0.6
Nav aids · Timor Sea	1	9.8	0	—	5.0× / 0.2
Cable ops · Bay of Bengal	1	9.6	1	9	5.0× / 0.2
Exercises · Persian Gulf	1	9.3	1	9	5.0× / 0.2
Exercises · Caribbean Sea	1	8.8	0	—	1.0× / 1
Nav aids · Great Australian Bight	1	7.9	0	—	1.0× / 1
Other · North Pacific Ocean	1	7.7	1	7	0.1× / 7
Cable ops · Ceram Sea	1	6.9	1	6	new / 0
Other · Ionian Sea	1	6.7	1	6	new / 0
Missiles · Southern Ocean	1	5.9	0	—	new / 0
Restricted · South Atlantic Ocean	1	5.7	0	—	2.5× / 0.4
Other · Gulf of Alaska	1	5.4	0	—	5.0× / 0.2
Nav aids · Mediterranean Sea - Western Basin	1	4.9	0	—	1.7× / 0.6
Cable ops · Caribbean Sea	1	4.8	0	—	1.3× / 0.8
Nav aids · The Coastal Waters of Southeast Alaska and British Columbia	1	4.1	0	—	1.0× / 1
Missiles · Laccadive Sea	1	4	0	—	1.3× / 0.8
Missiles · Great Australian Bight	1	3.9	0	—	new / 0
Exercises · Coral Sea	1	3.1	0	—	0.8× / 1.2
Quakes · Adriatic Sea	1	3	0	—	2.5× / 0.4
Quakes · Aegean Sea	1	3	0	—	new / 0
Debris · Arafura Sea	1	3	0	—	0.6× / 1.6
Derelicts · Arafura Sea	1	3	0	—	1.3× / 0.8
Quakes · Black Sea	1	3	0	—	new / 0
Quakes · Celebes Sea	1	3	0	—	5.0× / 0.2
Debris · Celtic Sea	1	3	0	—	new / 0
Debris · Coral Sea	1	3	0	—	1.7× / 0.6
Quakes · Coral Sea	1	3	0	—	0.5× / 2.2
Derelicts · English Channel	1	3	0	—	1.0× / 1
Incidents · English Channel	1	3	0	—	new / 0
Quakes · Gulf of California	1	3	0	—	new / 0
Debris · Indian Ocean	1	3	0	—	0.6× / 1.8
Icebergs · Laptev Sea	1	3	0	—	0.8× / 1.2
Derelicts · Mozambique Channel	1	3	0	—	new / 0
Debris · North Atlantic Ocean	1	3	0	—	0.4× / 2.8
Debris · North Pacific Ocean	1	3	0	—	5.0× / 0.2
Debris · North Sea	1	3	0	—	new / 0
Containers · Persian Gulf	1	3	0	—	new / 0
Quakes · Philippine Sea	1	3	0	—	1.0× / 1
Debris · South Atlantic Ocean	1	3	0	—	2.5× / 0.4
Derelicts · South China Sea	1	3	0	—	1.7× / 0.6
Debris · South Pacific Ocean	1	3	0	—	new / 0
Restricted · Sea of Okhotsk	1	2.9	0	—	new / 0
Containers · South China Sea	1	2.8	0	—	new / 0
Exercises · Bering Sea	1	2.7	0	—	new / 0
Surveys · English Channel	1	2.5	0	—	1.7× / 0.6
Restricted · South Pacific Ocean	1	2	0	—	new / 0
Cable ops · Indian Ocean	1	1.4	1	1	2.5× / 0.4
Containers · North Atlantic Ocean	1	1.4	1	1	1.0× / 1
Derelicts · Gulf of Mexico	1	0.8	1	0	5.0× / 0.2
Incidents · Solomon Sea	1	0.8	0	—	2.5× / 0.4
Exercises · Alboran Sea	1	0.6	0	—	2.5× / 0.4
Quakes · Persian Gulf	1	0.4	1	0	new / 0
Incidents · Malacca Strait	1	0.3	1	0	1.7× / 0.6
Piracy · Red Sea	1	0.1	0	—	5.0× / 0.2
Wrecks · The Northwestern Passageslong running	0	210	7	454	— / 0
Volcanic · Philippine Sealong running	0	180	6	712	— / 0
Wrecks · Arabian Sea	0	150	5	193	0.0× / 0.6
Wrecks · Caribbean Sealong running	0	150	5	403	0.0× / 1
Surveys · The Northwestern Passages	0	150	5	103	0.0× / 0.2
Surveys · Kara Sea	0	120	4	142	— / 0
Cable ops · Persian Gulflong running	0	120	4	475	0.0× / 0.2
Exercises · Aegean Sea	0	90	3	331	0.0× / 14.6
Surveys · Barentsz Sea	0	90	3	142	0.0× / 1.6
Nav aids · Bay of Biscay	0	90	3	124	0.0× / 0.4
Surveys · Bay of Biscay	0	69	1	294	0.0× / 0.2
Nav aids · Andaman or Burma Sea	0	60	2	258	0.0× / 0.8
Other · Arabian Sealong running	0	60	2	447	— / 0
Mines · Black Sea	0	60	2	279	— / 0
Other · Caribbean Sealong running	0	60	2	398	0.0× / 0.8

Cite: seahazards.com Sea Ledger, 2022-11, 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.