Sea Ledger, January 2022

2022-01-01 to 2022-01-31 · archive

issued: 626
warning-days in force: 11,753
in force at month end: 387
sea × type cells: 223

baseline: same month, previous 5 years (2021-01, 2020-01, 2019-01, 2018-01, 2017-01)

By type

type	issued	warning-days	in force at end
Exercises	120	1,146.5	49
Icebergs	95	104.2	4
Nav aids	68	3,204.4	100
Incidents	68	988.1	26
Surveys	66	2,090.5	70
Missiles	53	265	9
Quakes	39	113.8	5
Cable ops	30	412.6	14
Other	20	665.5	18
Derelicts	19	269.6	10
Towing	16	15.3	1
Debris	12	36	0
Spills	10	110.8	4
Volcanic	2	358.3	12
Restricted	2	22.2	1
Piracy	2	16.6	2
Containers	2	6	0
Wrecks	1	1,801.3	59
Ordnance	1	33.2	0
Structures	0	62	2
Mines	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 Ocean	32	32	1	31	1.6× / 20.4
Icebergs · Labrador Sea	31	36.2	2	32	1.0× / 31.2
Icebergs · South Atlantic Ocean	31	33	1	31	1.1× / 29
Missiles · North Atlantic Oceansurge	20	90.6	2	66	2.5× / 8
Surveys · South Atlantic Ocean	18	149.4	6	69	0.9× / 19
Nav aids · North Atlantic Oceanlong running	17	305.1	9	724	1.9× / 8.8
Exercises · North Pacific Ocean	17	195.3	10	66	0.8× / 22.4
Missiles · South Atlantic Oceansurge	17	45.8	2	30	28× / 0.6
Incidents · South China Sealong running	16	294.1	7	665	0.5× / 32.8
Towing · North Pacific Oceannew	16	15.3	1	31	new / 0
Exercises · Arabian Sea	13	118.7	2	63	1.1× / 11.8
Quakes · South Pacific Ocean	13	32.2	5	30	1.4× / 9.2
Exercises · Black Sea	12	159.1	9	39	1.0× / 12
Incidents · North Atlantic Ocean	12	135.5	8	40	1.2× / 10
Exercises · Bay of Bengal	12	101.9	4	31	1.3× / 9.6
Exercises · South Atlantic Ocean	12	87.2	4	26	1.2× / 10.2
Nav aids · North Sea	9	167.6	3	158	0.8× / 10.8
Cable ops · North Atlantic Oceansurge	9	132	2	108	2.3× / 4
Surveys · Persian Gulfsurgelong running	8	255.3	9	378	2.2× / 3.6
Nav aids · Inner Seas off the West Coast of Scotlandsurge	8	44.9	2	32	3.6× / 2.2
Other · Great Australian Bightsurge	7	100.8	3	42	35× / 0.2
Exercises · Mediterranean Sea - Eastern Basin	7	57.2	3	33	0.4× / 17.6
Exercises · North Atlantic Ocean	7	50	2	158	0.8× / 8.8
Exercises · South Pacific Ocean	7	29.7	1	30	1.1× / 6.4
Quakes · North Pacific Ocean	7	20.6	0	—	1.2× / 5.8
Surveys · Arabian Sea	6	132.9	4	70	0.9× / 7
Exercises · Barentsz Seasurge	6	45.5	0	—	6.0× / 1
Incidents · South Pacific Ocean	6	25.6	2	28	1.1× / 5.4
Exercises · Mediterranean Sea - Western Basinsurge	6	22.9	1	28	3.3× / 1.8
Missiles · South Pacific Ocean	6	22.5	1	14	1.7× / 3.6
Nav aids · North Pacific Oceanlong running	5	322.2	11	422	1.1× / 4.4
Nav aids · South Atlantic Ocean	5	295.3	10	179	0.7× / 7.6
Incidents · North Pacific Ocean	5	65.6	2	34	0.3× / 14.6
Derelicts · North Atlantic Ocean	5	28.8	0	—	0.9× / 5.6
Surveys · North Atlantic Oceanlong running	4	665.2	21	396	1.1× / 3.6
Incidents · Laccadive Sea	4	108.6	1	81	1.2× / 3.4
Exercises · Aegean Sealong running	4	104.6	4	384	0.2× / 16.8
Cable ops · North Pacific Oceansurge	4	65.5	2	319	10× / 0.4
Surveys · South China Seasurgelong running	4	64.7	3	872	20× / 0.2
Exercises · Caribbean Seasurge	4	52.3	3	63	2.9× / 1.4
Cable ops · Philippine Seasurge	4	49.1	2	27	10× / 0.4
Spills · North Atlantic Oceansurge	4	44	2	23	3.3× / 1.2
Missiles · Barentsz Sea	4	29.6	1	24	1.8× / 2.2
Incidents · Bay of Bengalsurge	4	25.9	0	—	4.0× / 1
Debris · Coral Seasurge	4	12	0	—	10× / 0.4
Debris · South Atlantic Oceansurge	4	12	0	—	20× / 0.2
Derelicts · South Atlantic Oceansurge	4	8.4	2	19	3.3× / 1.2
Nav aids · South Pacific Oceanlong running	3	361	9	511	1.1× / 2.6
Surveys · Caribbean Seasurge	3	62	2	62	5.0× / 0.6
Incidents · Caribbean Sea	3	55.9	1	42	1.1× / 2.8
Missiles · North Pacific Ocean	3	38.7	2	230	0.5× / 6
Spills · Gulf of Mexico	3	32	1	22	0.7× / 4.6
Other · South Atlantic Oceansurge	3	19.6	1	22	5.0× / 0.6
Quakes · Philippine Seasurge	3	9	0	—	2.5× / 1.2
Quakes · Solomon Sea	3	9	0	—	1.4× / 2.2
Incidents · South Atlantic Ocean	3	8.6	0	—	0.5× / 5.8
Nav aids · Celtic Seasurge	3	1.4	1	28	3.0× / 1
Nav aids · Irish Sea and St. George's Channel	3	0.7	0	—	1.9× / 1.6
Nav aids · Arabian Sea	2	129.8	4	224	1.0× / 2
Surveys · Mediterranean Sea - Eastern Basin	2	109	3	164	0.4× / 5.2
Nav aids · Indian Ocean	2	102.1	4	296	1.1× / 1.8
Other · North Pacific Ocean	2	62.6	2	304	1.4× / 1.4
Exercises · Ionian Sea	2	55.9	2	28	1.3× / 1.6
Surveys · South Pacific Oceanlong running	2	47.1	1	852	2.0× / 1
Incidents · Solomon Sea	2	46.6	1	194	1.7× / 1.2
Surveys · Bay of Bengal	2	45.5	1	61	0.7× / 2.8
Other · Gulf of Mexico	2	44.9	1	78	2.0× / 1
Surveys · Indian Ocean	2	43.9	1	349	0.7× / 3
Incidents · Mediterranean Sea - Western Basin	2	39.7	0	—	3.3× / 0.6
Exercises · Laccadive Sea	2	38.2	1	31	0.9× / 2.2
Derelicts · Caribbean Sea	2	37	1	307	0.8× / 2.4
Incidents · Arabian Sea	2	35.6	0	—	0.4× / 5.4
Surveys · Tasman Sea	2	18.9	2	34	10× / 0.2
Incidents · Coral Sea	2	18.1	0	—	0.4× / 4.6
Volcanic · South Pacific Ocean	2	17.3	1	16	10× / 0.2
Surveys · North Sea	2	11.9	1	16	1.3× / 1.6
Cable ops · South Atlantic Ocean	2	11.7	1	11	0.6× / 3.2
Nav aids · Coral Sea	2	11.2	0	—	0.5× / 3.8
Missiles · Indian Ocean	2	9.4	0	—	0.4× / 5.6
Cable ops · South Pacific Ocean	2	8.7	1	24	1.4× / 1.4
Exercises · Red Sea	2	7.9	0	—	5.0× / 0.4
Nav aids · Bass Strait	2	7.8	0	—	2.5× / 0.8
Derelicts · Java Seanew	2	7.7	1	19	new / 0
Cable ops · Celtic Sea	2	7.3	0	—	10× / 0.2
Quakes · South Atlantic Ocean	2	7.2	0	—	1.3× / 1.6
Debris · Celtic Sea	2	6	0	—	2.5× / 0.8
Containers · North Atlantic Ocean	2	6	0	—	5.0× / 0.4
Quakes · North Atlantic Ocean	2	6	0	—	5.0× / 0.4
Quakes · Southern Ocean	2	6	0	—	5.0× / 0.4
Other · Tasman Sea	2	6	0	—	2.5× / 0.8
Cable ops · Arabian Sea	2	4.7	2	4	1.4× / 1.4
Surveys · Ionian Seanew	2	4.6	0	—	new / 0
Exercises · Japan Sea	2	4.2	2	3	1.7× / 1.2
Derelicts · Philippine Sea	2	3.4	0	—	2.5× / 0.8
Exercises · Philippine Sea	2	3	0	—	0.7× / 3
Nav aids · Caribbean Sealong running	1	467.7	15	476	0.5× / 2.2
Nav aids · Mediterranean Sea - Western Basinlong running	1	180.3	6	570	0.6× / 1.6
Wrecks · Persian Gulflong running	1	127.3	5	451	0.8× / 1.2
Nav aids · Mediterranean Sea - Eastern Basin	1	74.3	3	266	new / 0
Surveys · Arctic Oceanlong running	1	62	2	469	new / 0
Other · Caribbean Sea	1	49.7	1	95	5.0× / 0.2
Surveys · Andaman or Burma Sea	1	40.7	2	53	1.3× / 0.8
Nav aids · Bay of Bengallong running	1	38.5	2	600	1.7× / 0.6
Incidents · Mediterranean Sea - Eastern Basin	1	36.8	1	37	0.1× / 11.6
Derelicts · Arabian Sea	1	35.3	2	227	0.5× / 2.2
Derelicts · South Pacific Ocean	1	33.7	0	—	0.6× / 1.8
Missiles · Aegean Sealong running	1	28.4	1	384	2.5× / 0.4
Incidents · Indian Ocean	1	21.7	0	—	0.2× / 5.4
Cable ops · Sea of Marmara	1	20.3	0	—	new / 0
Incidents · Mozambique Channel	1	20	0	—	0.8× / 1.2
Nav aids · Great Australian Bight	1	19.8	0	—	1.3× / 0.8
Restricted · South Atlantic Ocean	1	18.8	0	—	1.7× / 0.6
Surveys · Celtic Sea	1	16.4	0	—	1.7× / 0.6
Cable ops · Black Sealong running	1	14.4	1	370	2.5× / 0.4
Surveys · Laccadive Sea	1	14.1	0	—	1.0× / 1
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	14	0	—	5.0× / 0.2
Spills · South Pacific Ocean	1	13	1	13	new / 0
Surveys · Beaufort Sea	1	12.6	1	12	new / 0
Surveys · Mediterranean Sea - Western Basin	1	12.3	0	—	1.7× / 0.6
Piracy · Gulf of Guinea	1	11.6	1	32	0.3× / 3.2
Cable ops · Indian Ocean	1	10.6	0	—	5.0× / 0.2
Incidents · Singapore Strait	1	10.2	1	10	new / 0
Incidents · Gulf of Mexico	1	7.2	1	41	0.3× / 3.2
Cable ops · Caribbean Sea	1	6.9	0	—	new / 0
Surveys · North Pacific Ocean	1	6.2	0	—	new / 0
Exercises · Andaman or Burma Sea	1	5.8	1	5	0.7× / 1.4
Cable ops · Laccadive Sea	1	5.8	1	5	new / 0
Ordnance · North Pacific Ocean	1	5.7	0	—	2.5× / 0.4
Other · Bismarck Sea	1	5.4	0	—	new / 0
Piracy · Caribbean Sea	1	5	1	4	2.5× / 0.4
Quakes · Molukka Sea	1	4.6	0	—	1.0× / 1
Other · Gulf of Alaska	1	4.1	1	4	new / 0
Surveys · Adriatic Sea	1	4	0	—	new / 0
Quakes · Banda Sea	1	3.8	0	—	2.5× / 0.4
Exercises · Gulf of Oman	1	3.7	0	—	new / 0
Exercises · Alboran Sea	1	3.4	0	—	2.5× / 0.4
Quakes · Mediterranean Sea - Eastern Basin	1	3.2	0	—	1.7× / 0.6
Restricted · North Atlantic Ocean	1	3.2	1	3	5.0× / 0.2
Quakes · Aegean Sea	1	3	0	—	new / 0
Quakes · Coral Sea	1	3	0	—	0.5× / 2.2
Derelicts · English Channel	1	3	0	—	new / 0
Debris · Indian Ocean	1	3	0	—	1.7× / 0.6
Quakes · Indian Ocean	1	3	0	—	0.5× / 2
Icebergs · Indian Ocean	1	3	0	—	5.0× / 0.2
Other · Indian Ocean	1	3	0	—	1.7× / 0.6
Debris · Tasman Sea	1	3	0	—	new / 0
Quakes · Tasman Sea	1	3	0	—	new / 0
Nav aids · Strait of Gibraltar	1	2.5	0	—	1.3× / 0.8
Surveys · English Channel	1	1.8	1	1	new / 0
Derelicts · Laccadive Sea	1	1.7	1	1	0.8× / 1.2
Incidents · Bismarck Sea	1	1.3	0	—	0.3× / 3.6
Spills · Arabian Sea	1	0.8	0	—	new / 0
Nav aids · Bay of Biscay	1	0.6	0	—	new / 0
Incidents · Tasman Sea	1	0.1	0	—	0.6× / 1.8
Wrecks · North Atlantic Oceanlong running	0	310	10	1,106	0.0× / 0.6
Volcanic · Philippine Sealong running	0	279	9	409	— / 0
Nav aids · Gulf of Mexicolong running	0	248	8	422	0.0× / 3.6
Wrecks · South China Sealong running	0	248	8	1,079	0.0× / 1.8
Wrecks · Arabian Sealong running	0	186	6	860	0.0× / 0.8
Wrecks · South Atlantic Oceanlong running	0	155	5	378	0.0× / 0.4
Wrecks · Bay of Bengal	0	124	4	221	0.0× / 0.4
Wrecks · The Northwestern Passages	0	124	4	153	— / 0
Wrecks · Laccadive Sea	0	93	3	257	— / 0
Nav aids · Mozambique Channellong running	0	93	3	474	0.0× / 0.2
Wrecks · North Pacific Oceanlong running	0	93	3	1,033	0.0× / 0.2
Other · North Atlantic Ocean	0	69.2	1	47	0.0× / 1.8
Nav aids · Andaman or Burma Sealong running	0	62	2	392	0.0× / 0.6
Other · Arafura Sea	0	62	2	299	0.0× / 0.2
Wrecks · Caribbean Sea	0	62	2	314	0.0× / 1.2
Wrecks · English Channellong running	0	62	2	388	0.0× / 0.8
Surveys · Hudson Bay	0	62	2	166	— / 0
Wrecks · Inner Seas off the West Coast of Scotlandlong running	0	62	2	479	0.0× / 0.2
Other · Persian Gulflong running	0	62	2	574	— / 0
Structures · South Atlantic Ocean	0	62	2	242	0.0× / 0.6
Surveys · The Northwestern Passages	0	62	2	138	— / 0
Derelicts · Bay of Bengal	0	44.7	1	139	0.0× / 1.6
Nav aids · Alboran Sea	0	31	1	54	— / 0
Other · Arabian Sea	0	31	1	144	0.0× / 0.4
Incidents · Arafura Sea	0	31	1	48	0.0× / 1.4
Surveys · Baffin Bay	0	31	1	174	— / 0
Nav aids · Balearic (Iberian Sea)	0	31	1	99	— / 0
Nav aids · Barentsz Sea	0	31	1	126	— / 0
Surveys · Bay of Biscay	0	31	1	210	— / 0
Other · Bering Sea	0	31	1	123	0.0× / 0.8
Surveys · Bering Sea	0	31	1	199	— / 0
Volcanic · Caribbean Sea	0	31	1	294	— / 0
Surveys · Davis Strait	0	31	1	180	— / 0
Nav aids · Gulf of California	0	31	1	349	— / 0
Nav aids · Gulf of Thailandlong running	0	31	1	837	0.0× / 0.2
Wrecks · Japan Sealong running	0	31	1	375	0.0× / 0.2
Other · Kara Sea	0	31	1	110	— / 0
Surveys · Kara Sea	0	31	1	166	— / 0
Wrecks · Kara Sea	0	31	1	69	— / 0
Nav aids · Laccadive Sea	0	31	1	166	0.0× / 0.2
Cable ops · Mediterranean Sea - Eastern Basin	0	31	1	93	0.0× / 0.8
Other · Mozambique Channel	0	31	1	287	— / 0
Volcanic · Mozambique Channellong running	0	31	1	851	— / 0
Wrecks · North Sea	0	31	1	51	0.0× / 1.8
Cable ops · Persian Gulf	0	31	1	172	0.0× / 1.2
Mines · Persian Gulflong running	0	31	1	393	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2022-01, 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.