Sea Ledger, February 2022

2022-02-01 to 2022-02-28 · archive

issued: 608
warning-days in force: 11,279
in force at month end: 395
sea × type cells: 221

baseline: same month, previous 5 years (2021-02, 2020-02, 2019-02, 2018-02, 2017-02)

By type

type	issued	warning-days	in force at end
Exercises	101	1,319.6	36
Icebergs	87	87	4
Incidents	85	974.4	34
Surveys	81	2,176.6	77
Nav aids	70	2,938.4	110
Missiles	55	313.7	16
Quakes	31	95.3	2
Derelicts	17	237.3	7
Towing	17	18.7	0
Other	15	457.8	15
Cable ops	14	354.6	12
Spills	12	174	4
Debris	10	24.5	1
Containers	4	12	0
Wrecks	3	1,614.3	59
Mines	2	35.4	3
Piracy	2	16.9	0
Ordnance	1	25.3	1
Restricted	1	11	0
Volcanic	0	336	12
Structures	0	56	2

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Icebergs · Southern Ocean	34	32.3	1	28	1.4× / 25
Incidents · South China Sealong running	33	291.1	15	693	1.2× / 26.8
Surveys · South Atlantic Ocean	32	256.8	4	46	1.4× / 23.6
Icebergs · Labrador Sea	28	31.4	2	29	1.0× / 27.6
Icebergs · South Atlantic Ocean	25	23.3	1	28	1.4× / 18.4
Exercises · North Pacific Ocean	20	226.7	8	63	0.9× / 21.6
Incidents · North Atlantic Ocean	17	279.3	10	44	1.6× / 10.8
Towing · North Pacific Oceannew	17	18.7	0	—	new / 0
Missiles · North Atlantic Oceansurge	16	59.8	4	28	2.4× / 6.6
Missiles · South Atlantic Oceannew	14	47.5	2	28	new / 0
Nav aids · Inner Seas off the West Coast of Scotlandsurge	11	88.2	3	50	3.4× / 3.2
Exercises · Bay of Bengal	10	86.3	2	59	1.1× / 9.4
Missiles · Barentsz Seasurge	10	50.8	3	32	2.6× / 3.8
Exercises · Arabian Sea	9	89.8	2	35	1.2× / 7.6
Incidents · North Pacific Ocean	9	88.2	0	—	0.6× / 16
Exercises · Celtic Seasurge	9	11.7	1	25	23× / 0.4
Surveys · North Atlantic Ocean	8	519.1	22	70	1.3× / 6.4
Quakes · South Pacific Ocean	8	28.7	1	30	0.7× / 12.4
Nav aids · Caribbean Seasurgelong running	7	519.5	21	504	2.1× / 3.4
Exercises · Black Sea	7	282.7	4	37	0.5× / 14.8
Spills · Gulf of Mexico	7	99	2	32	1.5× / 4.8
Cable ops · North Atlantic Oceansurge	7	59.5	2	34	2.3× / 3
Missiles · Sea of Okhotsknew	7	43.4	4	25	new / 0
Quakes · South Atlantic Oceansurge	7	21	0	—	12× / 0.6
Derelicts · North Atlantic Ocean	7	20.3	0	—	0.6× / 11.4
Surveys · Persian Gulflong running	6	234.3	8	406	1.6× / 3.8
Exercises · South Atlantic Ocean	6	84.7	2	48	0.8× / 7.2
Exercises · South Pacific Ocean	6	16.4	1	33	0.8× / 7.2
Nav aids · South Atlantic Ocean	5	327.3	13	207	0.6× / 9
Surveys · Arabian Sea	5	117.4	5	98	0.8× / 6.6
Nav aids · North Sea	5	115.6	5	186	0.4× / 13.4
Exercises · North Atlantic Ocean	5	73.2	3	62	0.6× / 8.8
Other · North Pacific Oceansurge	5	62	2	332	4.2× / 1.2
Nav aids · English Channelsurge	5	14.4	0	—	2.3× / 2.2
Surveys · Caribbean Seasurge	4	62.5	1	90	20× / 0.2
Nav aids · Coral Seasurge	4	38.5	1	24	2.9× / 1.4
Nav aids · Bering Seasurge	4	33	1	25	20× / 0.2
Incidents · South Pacific Ocean	4	31.2	0	—	0.5× / 7.6
Derelicts · Indian Ocean	4	6.9	0	—	1.7× / 2.4
Incidents · Coral Sea	4	0.2	0	—	0.7× / 5.6
Nav aids · North Pacific Oceanlong running	3	290	10	450	1.1× / 2.8
Nav aids · North Atlantic Ocean	3	216.6	8	319	0.7× / 4.2
Surveys · Andaman or Burma Seasurge	3	77.5	3	81	2.1× / 1.4
Other · Great Australian Bightsurge	3	54.7	1	70	15× / 0.2
Spills · North Atlantic Ocean	3	53	1	40	1.1× / 2.6
Other · Gulf of Mexicosurge	3	40.5	2	106	7.5× / 0.4
Exercises · Laccadive Sea	3	39.2	1	28	1.1× / 2.6
Missiles · Indian Ocean	3	33	1	21	0.7× / 4.4
Exercises · Caribbean Seasurge	3	29.1	1	91	3.8× / 0.8
Exercises · Mediterranean Sea - Western Basin	3	29	1	32	0.7× / 4.6
Nav aids · Gulf of Alaskasurge	3	24.1	1	25	2.1× / 1.4
Exercises · Andaman or Burma Sea	3	22.1	1	33	1.9× / 1.6
Surveys · Gulf of Mexico	3	13.2	2	8	1.7× / 1.8
Exercises · Bay of Biscaynew	3	9	0	—	new / 0
Debris · Indian Oceansurge	3	9	0	—	3.8× / 0.8
Surveys · Celtic Seasurge	3	8.9	0	—	3.8× / 0.8
Incidents · Indian Ocean	3	4.6	1	27	1.0× / 3
Nav aids · South Pacific Oceanlong running	2	227	8	539	0.7× / 2.8
Wrecks · Persian Gulfnewlong running	2	152.9	7	479	new / 0
Nav aids · Arabian Sea	2	75.7	3	252	1.7× / 1.2
Nav aids · Mozambique Channellong running	2	58	2	502	10× / 0.2
Surveys · Indian Oceanlong running	2	55.1	1	377	0.6× / 3.4
Surveys · Bay of Biscay	2	47.8	3	238	10× / 0.2
Cable ops · Arabian Sea	2	37.9	1	32	1.3× / 1.6
Incidents · Laccadive Sea	2	36.7	2	109	0.8× / 2.4
Nav aids · Celtic Sea	2	35.3	1	28	1.0× / 2
Incidents · Caribbean Sea	2	33.6	0	—	0.5× / 4.2
Derelicts · Gulf of Mexiconew	2	32.7	2	16	new / 0
Exercises · Japan Sea	2	32.2	1	31	1.1× / 1.8
Incidents · Philippine Sea	2	28.7	0	—	0.3× / 6.6
Nav aids · Irish Sea and St. George's Channel	2	27.3	1	17	2.0× / 1
Surveys · Mediterranean Sea - Western Basin	2	24.6	1	25	3.3× / 0.6
Incidents · Southern Ocean	2	23.3	0	—	10× / 0.2
Surveys · North Sea	2	23	0	—	1.1× / 1.8
Exercises · Barentsz Sea	2	16.2	1	24	3.3× / 0.6
Missiles · South Pacific Ocean	2	13.2	0	—	1.3× / 1.6
Cable ops · South China Sea	2	12.4	1	20	1.7× / 1.2
Mines · Black Seanew	2	7.4	2	4	new / 0
Exercises · Red Sea	2	7.3	1	20	5.0× / 0.4
Containers · Celtic Sea	2	6	0	—	10× / 0.2
Quakes · Eastern China Seanew	2	6	0	—	new / 0
Containers · English Channel	2	6	0	—	10× / 0.2
Quakes · Flores Seanew	2	6	0	—	new / 0
Quakes · Indian Ocean	2	6	0	—	1.1× / 1.8
Quakes · North Pacific Ocean	2	6	0	—	0.7× / 3
Incidents · Arabian Sea	2	4.8	2	2	0.5× / 4
Debris · English Channel	2	3.4	0	—	1.7× / 1.2
Nav aids · Strait of Gibraltar	2	2.9	1	8	10× / 0.2
Exercises · Philippine Sea	2	1.5	1	6	0.4× / 5.6
Nav aids · Mediterranean Sea - Western Basinlong running	1	168.5	7	598	0.7× / 1.4
Nav aids · Indian Ocean	1	101.2	3	324	0.5× / 2.2
Surveys · Mediterranean Sea - Eastern Basin	1	94.3	3	192	0.5× / 2.2
Exercises · Mediterranean Sea - Eastern Basin	1	72.7	0	—	0.0× / 23
Surveys · Tasman Sea	1	64.7	2	38	1.0× / 1
Incidents · Solomon Sea	1	45.4	1	222	0.7× / 1.4
Surveys · Bay of Bengal	1	42	1	32	0.3× / 3.2
Other · North Atlantic Ocean	1	40.3	1	72	0.8× / 1.2
Cable ops · Persian Gulf	1	40.2	2	200	2.5× / 0.4
Surveys · South Pacific Oceanlong running	1	37.4	2	880	1.0× / 1
Cable ops · South Atlantic Ocean	1	37	1	34	1.7× / 0.6
Incidents · Gulf of Mexico	1	32.7	1	28	0.5× / 2.2
Missiles · North Pacific Ocean	1	32.5	1	258	0.3× / 3
Incidents · Arafura Sea	1	31	1	76	1.7× / 0.6
Derelicts · Tasman Sea	1	31	1	90	1.7× / 0.6
Derelicts · Bay of Bengal	1	30.4	1	167	0.7× / 1.4
Nav aids · Tasman Sea	1	29.7	1	274	0.4× / 2.8
Other · Arabian Sea	1	28.4	1	172	2.5× / 0.4
Surveys · Solomon Sea	1	25.9	1	25	new / 0
Ordnance · North Sea	1	25.3	1	25	0.5× / 2
Surveys · Bass Strait	1	19.7	1	19	0.8× / 1.2
Other · Southern Ocean	1	17.9	1	17	new / 0
Wrecks · Irish Sea and St. George's Channel	1	17.1	1	17	new / 0
Surveys · Laccadive Sea	1	16.8	1	16	5.0× / 0.2
Incidents · South Atlantic Ocean	1	14.1	0	—	0.2× / 5.8
Spills · North Pacific Ocean	1	14	0	—	0.4× / 2.6
Other · South Atlantic Ocean	1	14	0	—	1.7× / 0.6
Cable ops · South Pacific Ocean	1	10.6	0	—	1.0× / 1
Surveys · English Channel	1	9.9	0	—	5.0× / 0.2
Restricted · South Atlantic Ocean	1	9	0	—	2.5× / 0.4
Exercises · Gulf of Mexico	1	8.9	0	—	1.3× / 0.8
Exercises · Gulf of California	1	8.6	0	—	new / 0
Incidents · North Sea	1	8.1	1	8	new / 0
Nav aids · Kattegat	1	7.4	1	7	new / 0
Piracy · Malacca Strait	1	7	0	—	new / 0
Piracy · Singapore Strait	1	7	0	—	5.0× / 0.2
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	7	1	7	0.4× / 2.6
Surveys · Timor Sea	1	5.7	1	5	2.5× / 0.4
Exercises · Ligurian Sea	1	4.6	0	—	new / 0
Missiles · Arctic Ocean	1	3.6	0	—	2.5× / 0.4
Quakes · Banda Sea	1	3	0	—	5.0× / 0.2
Quakes · Bismarck Sea	1	3	0	—	1.7× / 0.6
Debris · Celtic Sea	1	3	0	—	0.4× / 2.4
Derelicts · English Channel	1	3	0	—	5.0× / 0.2
Quakes · Greenland Sea	1	3	0	—	5.0× / 0.2
Quakes · Molukka Sea	1	3	0	—	1.7× / 0.6
Debris · Philippine Sea	1	3	0	—	new / 0
Quakes · Philippine Sea	1	3	0	—	0.5× / 2.2
Quakes · South China Sea	1	3	0	—	5.0× / 0.2
Quakes · Southern Ocean	1	3	0	—	1.7× / 0.6
Debris · Tasman Sea	1	3	0	—	2.5× / 0.4
Debris · Timor Sea	1	3	0	—	new / 0
Exercises · Indian Ocean	1	2.1	0	—	0.5× / 2
Missiles · Laccadive Sea	1	1.9	0	—	1.0× / 1
Nav aids · Bristol Channel	1	1.6	0	—	5.0× / 0.2
Exercises · Chukchi Sea	1	1.6	0	—	new / 0
Nav aids · Bass Strait	1	1.1	0	—	1.7× / 0.6
Nav aids · The Coastal Waters of Southeast Alaska and British Columbia	1	1	1	1	0.7× / 1.4
Quakes · North Atlantic Ocean	1	0.6	1	0	1.7× / 0.6
Debris · South Pacific Ocean	1	0.1	1	0	1.7× / 0.6
Nav aids · Adriatic Sea	1	0	0	—	new / 0
Derelicts · Andaman or Burma Sea	1	0	0	—	new / 0
Wrecks · North Atlantic Oceanlong running	0	280	10	1,134	0.0× / 0.2
Volcanic · Philippine Sealong running	0	252	9	437	0.0× / 0.2
Nav aids · Gulf of Mexicolong running	0	224	8	450	0.0× / 2.6
Wrecks · South China Sealong running	0	224	8	1,107	0.0× / 1.2
Wrecks · Arabian Sealong running	0	142.1	5	888	0.0× / 1
Wrecks · South Atlantic Oceanlong running	0	115	4	406	0.0× / 1
Wrecks · Bay of Bengal	0	112	4	249	0.0× / 0.2
Wrecks · The Northwestern Passages	0	112	4	181	— / 0
Exercises · Aegean Sea	0	108	3	56	0.0× / 10.8
Wrecks · North Pacific Oceanlong running	0	84	3	1,061	— / 0
Surveys · South China Sealong running	0	84	3	900	0.0× / 0.6
Wrecks · Laccadive Sea	0	67.2	2	285	0.0× / 0.2
Nav aids · Mediterranean Sea - Eastern Basin	0	58.5	2	294	— / 0
Nav aids · Andaman or Burma Sealong running	0	56	2	420	0.0× / 0.4
Other · Arafura Sea	0	56	2	327	— / 0
Surveys · Arctic Oceanlong running	0	56	2	497	— / 0
Wrecks · Caribbean Sea	0	56	2	342	0.0× / 2
Wrecks · English Channellong running	0	56	2	416	0.0× / 0.4
Surveys · Hudson Bay	0	56	2	194	— / 0
Wrecks · Inner Seas off the West Coast of Scotlandlong running	0	56	2	507	0.0× / 0.2
Exercises · Ionian Sea	0	56	2	56	0.0× / 1.2
Other · Persian Gulflong running	0	56	2	602	— / 0
Cable ops · Philippine Sea	0	56	2	55	0.0× / 0.8
Structures · South Atlantic Ocean	0	56	2	270	0.0× / 0.4
Surveys · The Northwestern Passages	0	56	2	166	— / 0
Derelicts · Arabian Sea	0	38.7	1	255	0.0× / 0.4
Cable ops · North Pacific Ocean	0	32	1	347	0.0× / 0.8
Missiles · Aegean Sea	0	28	1	56	— / 0
Nav aids · Alboran Sea	0	28	1	82	— / 0
Surveys · Baffin Bay	0	28	1	202	— / 0
Nav aids · Balearic (Iberian Sea)	0	28	1	127	— / 0
Nav aids · Barentsz Sea	0	28	1	154	— / 0
Surveys · Beaufort Sea	0	28	1	40	— / 0
Other · Bering Sea	0	28	1	151	0.0× / 0.6
Surveys · Bering Sea	0	28	1	227	— / 0
Cable ops · Black Sea	0	28	1	42	— / 0
Derelicts · Caribbean Sea	0	28	1	335	0.0× / 1.6
Other · Caribbean Sea	0	28	1	123	0.0× / 1
Volcanic · Caribbean Sea	0	28	1	322	— / 0
Surveys · Davis Strait	0	28	1	208	— / 0
Nav aids · Gulf of Californialong running	0	28	1	377	0.0× / 0.2
Nav aids · Gulf of Thailandlong running	0	28	1	865	— / 0
Wrecks · Japan Sealong running	0	28	1	403	— / 0
Other · Kara Sea	0	28	1	138	— / 0
Surveys · Kara Sea	0	28	1	194	— / 0
Wrecks · Kara Sea	0	28	1	97	0.0× / 0.4
Cable ops · Laccadive Sea	0	28	1	33	— / 0
Volcanic · Mozambique Channellong running	0	28	1	879	— / 0
Wrecks · North Sea	0	28	1	79	0.0× / 1.8

Cite: seahazards.com Sea Ledger, 2022-02, 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.