Sea Ledger, October 2022

2022-10-01 to 2022-10-31 · archive

issued: 742
warning-days in force: 13,266
in force at month end: 426
sea × type cells: 228

baseline: same month, previous 5 years (2021-10, 2020-10, 2019-10, 2018-10, 2017-10)

By type

type	issued	warning-days	in force at end
Exercises	173	1,320.3	33
Surveys	113	2,859.9	99
Icebergs	102	115.7	4
Incidents	101	1,094.1	45
Nav aids	56	4,345	131
Missiles	55	371	8
Towing	31	31.9	1
Cable ops	28	455.1	14
Quakes	24	75.1	3
Derelicts	23	211.3	8
Other	11	550.1	16
Wrecks	6	1,167	40
Debris	6	78	4
Storms	6	14.7	0
Spills	5	104.7	5
Piracy	1	3	0
Containers	1	4.4	0
Volcanic	0	217	7
Mines	0	62	2
Structures	0	62	2
Restricted	0	31	1
Ordnance	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	62	58.8	2	32	2.0× / 30.8
Surveys · South Atlantic Oceansurge	36	313	11	59	2.0× / 17.8
Exercises · North Pacific Ocean	32	283	9	65	1.4× / 23.2
Towing · North Pacific Oceansurge	31	31.9	1	31	12× / 2.6
Icebergs · Labrador Sea	26	30.7	2	32	0.9× / 29.6
Exercises · Arabian Seasurge	23	106.4	3	33	2.1× / 11
Surveys · Arabian Seasurge	22	228.7	10	54	4.6× / 4.8
Incidents · North Atlantic Oceansurge	19	373.6	13	262	2.9× / 6.6
Exercises · Bay of Bengal	17	105.8	2	33	1.3× / 13.4
Exercises · Celtic Seasurge	17	19.4	0	—	28× / 0.6
Incidents · South China Sea	16	101.5	5	241	0.5× / 31.2
Exercises · South Pacific Ocean	16	55.6	2	30	1.6× / 10
Missiles · South Pacific Oceansurge	15	84.8	3	37	9.4× / 1.6
Missiles · North Atlantic Ocean	15	57.2	2	60	1.8× / 8.4
Surveys · North Atlantic Ocean	14	741.8	27	307	1.4× / 10
Exercises · South Atlantic Ocean	13	162	3	123	1.1× / 11.4
Incidents · Mediterranean Sea - Eastern Basinsurge	13	115.5	8	41	3.1× / 4.2
Surveys · Persian Gulfsurgelong running	12	352.6	11	651	2.4× / 5
Exercises · North Atlantic Ocean	12	110.9	2	66	1.0× / 12.2
Incidents · Indian Ocean	9	60.9	1	31	2.0× / 4.6
Quakes · South Pacific Ocean	9	26.6	2	32	0.8× / 11.2
Missiles · Barentsz Sea	8	52.2	1	23	0.8× / 9.8
Nav aids · Caribbean Seasurgelong running	7	691.1	25	622	3.5× / 2
Nav aids · North Sea	7	136.3	3	144	0.9× / 7.6
Incidents · North Pacific Ocean	7	106.5	4	44	0.4× / 19
Exercises · Bay of Biscaynew	7	9	0	—	new / 0
Derelicts · North Atlantic Ocean	6	12.7	0	—	1.1× / 5.2
Nav aids · North Atlantic Oceanlong running	5	285.3	8	564	0.6× / 7.8
Cable ops · North Atlantic Ocean	5	134.9	4	134	0.5× / 9.8
Exercises · Barentsz Seasurge	5	95.2	2	184	2.3× / 2.2
Cable ops · Arabian Seasurge	5	71	1	27	3.6× / 1.4
Incidents · Philippine Sea	5	63.5	2	33	1.2× / 4.2
Exercises · Laccadive Seasurge	5	54.4	0	—	2.1× / 2.4
Exercises · Gulf of Mexicosurge	5	44.1	0	—	2.1× / 2.4
Surveys · Caribbean Seasurge	5	32.6	2	39	2.1× / 2.4
Nav aids · Davis Straitsurge	5	28.7	0	—	3.6× / 1.4
Icebergs · North Atlantic Oceansurge	5	5.9	0	—	13× / 0.4
Icebergs · South Atlantic Ocean	5	5.6	0	—	0.2× / 24.8
Spills · North Atlantic Oceansurge	4	63	4	102	2.0× / 2
Incidents · Mediterranean Sea - Western Basinsurge	4	60.9	1	25	3.3× / 1.2
Incidents · Gulf of Mexicosurge	4	51	1	43	4.0× / 1
Exercises · Japan Sea	4	26	1	31	1.8× / 2.2
Exercises · Caribbean Seasurge	4	14.3	1	61	2.5× / 1.6
Quakes · South Atlantic Ocean	4	12	0	—	1.5× / 2.6
Nav aids · North Pacific Oceanlong running	3	430.6	14	577	0.5× / 5.8
Cable ops · Persian Gulfnewlong running	3	83.5	4	445	new / 0
Surveys · Bay of Biscaysurge	3	80.4	3	264	15× / 0.2
Other · North Atlantic Oceansurge	3	59.9	1	43	3.0× / 1
Cable ops · South China Seasurge	3	46.5	1	69	2.1× / 1.4
Surveys · Bay of Bengal	3	42.6	3	32	1.9× / 1.6
Incidents · Arabian Sea	3	31.7	3	32	0.7× / 4.4
Surveys · North Sea	3	19	1	86	1.7× / 1.8
Nav aids · Tasman Seasurge	3	16.6	1	13	3.0× / 1
Exercises · Andaman or Burma Sea	3	13	0	—	1.1× / 2.8
Icebergs · Laptev Sea	3	11.7	0	—	1.4× / 2.2
Missiles · Philippine Seasurge	3	11.3	0	—	3.8× / 0.8
Storms · Gulf of Mexico	3	10.4	0	—	0.7× / 4.4
Exercises · Philippine Sea	3	10.2	0	—	0.9× / 3.2
Quakes · North Pacific Ocean	3	9.9	0	—	0.5× / 6
Derelicts · Caribbean Seasurge	3	9	0	—	5.0× / 0.6
Quakes · Philippine Sea	3	9	0	—	1.3× / 2.4
Derelicts · South China Seasurge	3	7.4	0	—	7.5× / 0.4
Incidents · South Pacific Ocean	3	6.1	1	26	0.4× / 7.2
Derelicts · Indian Ocean	3	6	1	25	0.8× / 3.6
Nav aids · Inner Seas off the West Coast of Scotland	3	4.8	1	28	0.6× / 4.8
Storms · North Atlantic Oceansurge	3	4.3	0	—	15× / 0.2
Nav aids · South Atlantic Ocean	2	921.1	28	208	0.4× / 5.6
Nav aids · Gulf of Mexicolong running	2	232.3	7	577	0.6× / 3.2
Surveys · Indian Oceanlong running	2	127.5	4	622	0.5× / 3.8
Nav aids · Beaufort Sea	2	66.1	2	81	2.0× / 1
Nav aids · Celtic Sea	2	63.8	2	73	1.3× / 1.6
Nav aids · Indian Ocean	2	56.8	1	43	0.9× / 2.2
Missiles · North Pacific Oceanlong running	2	43.8	1	503	0.6× / 3.6
Surveys · Laccadive Sea	2	40.1	2	261	2.5× / 0.8
Other · Coral Sea	2	38.1	2	194	10× / 0.2
Derelicts · South Pacific Ocean	2	31.3	1	28	0.9× / 2.2
Incidents · Bay of Bengal	2	20.9	0	—	1.4× / 1.4
Surveys · North Pacific Ocean	2	20	2	13	1.4× / 1.4
Incidents · Laccadive Sea	2	17.6	1	15	0.7× / 3
Missiles · Indian Ocean	2	15.4	0	—	0.7× / 2.8
Nav aids · The Northwestern Passages	2	14.2	2	7	1.7× / 1.2
Missiles · Southern Ocean	2	11.6	0	—	2.5× / 0.8
Nav aids · Gulf of Alaska	2	10.4	0	—	2.5× / 0.8
Cable ops · The Coastal Waters of Southeast Alaska and British Columbianew	2	10.1	0	—	new / 0
Surveys · Baffin Baynew	2	9.4	0	—	new / 0
Cable ops · Philippine Sea	2	9.1	0	—	10× / 0.2
Nav aids · Strait of Gibraltar	2	8.8	0	—	2.0× / 1
Derelicts · Coral Sea	2	6	0	—	2.5× / 0.8
Wrecks · Hudson Baynew	2	6	2	3	new / 0
Derelicts · North Pacific Ocean	2	3	1	7	2.5× / 0.8
Other · Indian Ocean	2	2.7	0	—	2.5× / 0.8
Exercises · Indian Ocean	2	1.8	0	—	0.9× / 2.2
Incidents · Great Australian Bightnew	2	0.4	0	—	new / 0
Nav aids · South Pacific Oceanlong running	1	709.1	15	468	0.3× / 3.8
Wrecks · The Northwestern Passageslong running	1	199.8	7	424	new / 0
Wrecks · South Atlantic Ocean	1	161.6	5	177	1.0× / 1
Wrecks · Arabian Sea	1	146.5	5	163	5.0× / 0.2
Surveys · Sea of Okhotsk	1	119.8	2	141	0.5× / 2
Nav aids · Arabian Sealong running	1	89.7	3	369	0.7× / 1.4
Derelicts · Laccadive Sea	1	63.9	2	131	0.7× / 1.4
Surveys · Gulf of Mexico	1	62.9	1	202	1.7× / 0.6
Nav aids · Hudson Bay	1	49.1	2	47	2.5× / 0.4
Nav aids · English Channel	1	31.9	1	41	0.3× / 3.2
Nav aids · Irish Sea and St. George's Channel	1	31.9	2	123	0.6× / 1.8
Missiles · South Atlantic Ocean	1	31.1	0	—	1.3× / 0.8
Other · English Channel	1	31	1	50	0.8× / 1.2
Incidents · Ionian Sea	1	28.5	0	—	2.5× / 0.4
Surveys · Timor Sea	1	27	1	26	1.7× / 0.6
Cable ops · Gulf of Suez	1	26.3	1	46	new / 0
Incidents · Caribbean Sea	1	20.4	1	42	0.3× / 3
Other · Great Australian Bight	1	16	1	15	new / 0
Incidents · Tyrrhenian Sea	1	15.2	1	15	1.7× / 0.6
Cable ops · Gulf of Boni	1	14.5	1	14	new / 0
Other · Barentsz Sea	1	14.4	0	—	new / 0
Cable ops · Java Sea	1	14.4	0	—	new / 0
Surveys · Norwegian Sea	1	12.5	0	—	new / 0
Nav aids · Norwegian Sea	1	10.2	0	—	new / 0
Spills · North Pacific Ocean	1	10	1	43	0.4× / 2.8
Cable ops · Eastern China Sea	1	9.9	0	—	1.3× / 0.8
Cable ops · North Sea	1	9.9	0	—	2.5× / 0.4
Derelicts · Celtic Sea	1	9.8	1	31	2.5× / 0.4
Exercises · Gulf of California	1	8.9	0	—	1.3× / 0.8
Missiles · Arctic Ocean	1	8.5	0	—	1.7× / 0.6
Exercises · Mediterranean Sea - Eastern Basin	1	8.4	1	8	0.1× / 22.2
Surveys · Philippine Sea	1	8.4	0	—	2.5× / 0.4
Incidents · Java Sea	1	6.2	1	6	0.7× / 1.4
Missiles · Arabian Sea	1	5.9	0	—	1.7× / 0.6
Quakes · Indian Ocean	1	5.8	0	—	0.5× / 2.2
Missiles · Kara Sea	1	5.8	0	—	1.3× / 0.8
Missiles · South China Sea	1	5.5	0	—	5.0× / 0.2
Surveys · Andaman or Burma Sea	1	5.1	1	5	1.3× / 0.8
Quakes · North Atlantic Ocean	1	4.6	0	—	0.7× / 1.4
Cable ops · Bismarck Sea	1	3.8	1	3	new / 0
Incidents · Bismarck Sea	1	3.8	1	3	0.5× / 2.2
Incidents · Arafura Sea	1	3.6	0	—	2.5× / 0.4
Exercises · Gulf of Oman	1	3.3	0	—	5.0× / 0.2
Debris · Bay of Bengal	1	3	1	2	new / 0
Debris · Caribbean Sea	1	3	0	—	new / 0
Quakes · Gulf of California	1	3	0	—	5.0× / 0.2
Piracy · Indian Ocean	1	3	0	—	5.0× / 0.2
Icebergs · Kara Sea	1	3	0	—	0.7× / 1.4
Containers · Red Sea	1	3	0	—	new / 0
Debris · Red Sea	1	3	0	—	new / 0
Quakes · South China Sea	1	3	0	—	new / 0
Debris · Timor Sea	1	3	0	—	0.8× / 1.2
Cable ops · Balearic (Iberian Sea)	1	2.9	1	2	new / 0
Missiles · Bay of Bengal	1	2.9	0	—	1.7× / 0.6
Missiles · Laccadive Sea	1	2.9	0	—	1.0× / 1
Incidents · Solomon Sea	1	2.9	0	—	0.8× / 1.2
Other · Bay of Biscay	1	2.8	0	—	new / 0
Cable ops · South Atlantic Ocean	1	2.8	0	—	5.0× / 0.2
Surveys · Malacca Strait	1	2.7	1	2	new / 0
Exercises · Gulf of Guinea	1	2.4	1	2	5.0× / 0.2
Debris · Barentsz Sea	1	2.3	1	2	5.0× / 0.2
Wrecks · Davis Strait	1	2.1	0	—	new / 0
Nav aids · Coral Sea	1	1.7	0	—	0.4× / 2.8
Debris · South Pacific Ocean	1	1.4	0	—	2.5× / 0.4
Missiles · Coral Sea	1	1.1	0	—	new / 0
Incidents · South Atlantic Ocean	1	0.8	1	0	0.2× / 4.2
Exercises · Coral Sea	1	0.2	0	—	0.8× / 1.2
Incidents · Timor Sea	1	0.2	0	—	0.7× / 1.4
Incidents · Banda Sea	1	0.1	0	—	5.0× / 0.2
Incidents · Coral Sea	1	0.1	0	—	0.3× / 3.2
Quakes · Tyrrhenian Sea	1	0.1	1	0	new / 0
Incidents · Red Sea	1	0	0	—	new / 0
Volcanic · Philippine Sealong running	0	186	6	682	0.0× / 1
Surveys · Kara Sea	0	169.6	4	112	0.0× / 1.4
Surveys · The Northwestern Passages	0	157.7	5	76	0.0× / 0.6
Wrecks · Caribbean Sealong running	0	155	5	373	0.0× / 1
Wrecks · South China Sealong running	0	124	4	1,334	0.0× / 1
Exercises · Aegean Sea	0	93	3	301	0.0× / 10.8
Surveys · Barentsz Sea	0	93	3	112	0.0× / 0.8
Nav aids · Bay of Biscay	0	93	3	94	0.0× / 0.2
Wrecks · Persian Gulflong running	0	93	3	607	— / 0
Nav aids · Andaman or Burma Sealong running	0	82.5	2	665	— / 0
Other · Arabian Sealong running	0	62	2	417	— / 0
Surveys · Arctic Ocean	0	62	2	93	0.0× / 0.6
Mines · Black Sea	0	62	2	249	— / 0
Other · Black Sea	0	62	2	90	0.0× / 0.2
Other · Caribbean Sealong running	0	62	2	368	0.0× / 0.2
Nav aids · Gulf of Californialong running	0	62	2	622	0.0× / 0.6
Exercises · Ionian Sea	0	62	2	301	— / 0
Nav aids · Laccadive Sea	0	62	2	139	0.0× / 0.8
Wrecks · North Atlantic Oceanlong running	0	62	2	523	0.0× / 0.2
Ordnance · North Sea	0	62	2	270	0.0× / 0.6
Wrecks · North Sea	0	62	2	324	0.0× / 0.6
Other · Persian Gulf	0	62	2	88	— / 0
Structures · South Atlantic Ocean	0	62	2	94	0.0× / 1
Other · South Pacific Ocean	0	37.6	1	42	— / 0
Missiles · Aegean Sea	0	31	1	301	0.0× / 0.4
Derelicts · Arabian Sea	0	31	1	74	0.0× / 0.6
Nav aids · Arafura Sea	0	31	1	117	0.0× / 0.8
Nav aids · Arctic Ocean	0	31	1	40	— / 0
Derelicts · Bay of Bengal	0	31	1	136	0.0× / 0.6
Wrecks · Bay of Bengal	0	31	1	68	0.0× / 0.2
Debris · Bay of Biscay	0	31	1	54	— / 0
Exercises · Black Sea	0	31	1	222	0.0× / 25.4
War risk · Black Sea	0	31	1	223	— / 0
Wrecks · Coral Sea	0	31	1	122	0.0× / 0.2
Wrecks · Gulf of Mexico	0	31	1	232	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2022-10, 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.