Sea Ledger, March 2022

2022-03-01 to 2022-03-31 · archive

issued: 718
warning-days in force: 11,905
in force at month end: 335
sea × type cells: 244

baseline: same month, previous 5 years (2021-03, 2020-03, 2019-03, 2018-03, 2017-03)

By type

type	issued	warning-days	in force at end
Exercises	179	1,353.6	46
Incidents	97	1,223.2	42
Icebergs	95	103.7	4
Nav aids	74	3,377.3	100
Surveys	70	2,111.2	57
Quakes	39	98.8	7
Missiles	29	311.6	11
Cable ops	29	466.7	10
Towing	26	28.2	1
Other	25	471.4	14
Derelicts	17	192.7	5
Spills	11	127.8	4
Debris	7	24.4	1
Wrecks	6	1,493.5	23
Containers	6	18	0
Piracy	3	14.1	0
Restricted	2	4.7	0
Volcanic	1	308.6	6
Ordnance	1	38	1
War risk	1	9	1
Mines	0	86.5	2
Structures	0	42.1	0

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Icebergs · Southern Ocean	52	51.5	2	31	1.8× / 29.2
Exercises · North Pacific Ocean	34	262.1	10	63	1.4× / 25.2
Icebergs · North Atlantic Oceansurge	29	34.2	2	28	3.0× / 9.6
Towing · North Pacific Oceannew	26	28.2	1	28	new / 0
Incidents · South China Sealong running	23	353.4	7	724	0.8× / 29
Incidents · North Atlantic Oceansurge	20	374.4	14	55	2.4× / 8.4
Surveys · South Atlantic Ocean	20	160.5	6	63	0.8× / 24.2
Exercises · Celtic Seanew	19	28.1	0	—	new / 0
Exercises · South Pacific Oceansurge	18	56	4	34	2.2× / 8.2
Nav aids · South Atlantic Ocean	14	519.2	17	177	1.5× / 9.2
Exercises · Arabian Sea	14	123.9	4	35	1.4× / 9.8
Exercises · South Atlantic Ocean	13	106.8	3	41	1.7× / 7.6
Incidents · Indian Oceansurge	13	102.6	4	31	2.6× / 5
Exercises · Bay of Biscaynew	13	32.7	2	24	new / 0
Nav aids · South Pacific Oceansurgelong running	12	331.2	15	570	3.8× / 3.2
Quakes · South Pacific Ocean	12	21.5	6	31	0.6× / 19
Exercises · Bay of Bengal	11	98.4	3	34	1.2× / 9.2
Icebergs · South Atlantic Ocean	10	10.6	0	—	0.5× / 21.6
Surveys · Persian Gulfsurgelong running	9	299.6	9	437	2.1× / 4.2
Nav aids · North Atlantic Oceansurge	9	241.3	7	350	2.8× / 3.2
Surveys · Arabian Sea	9	131.2	7	129	1.1× / 8.6
Cable ops · North Atlantic Oceansurge	9	40.7	1	37	2.1× / 4.2
Exercises · North Atlantic Ocean	8	98.5	5	93	1.5× / 5.4
Exercises · Andaman or Burma Seasurge	8	38.4	1	31	3.3× / 2.4
Incidents · South Pacific Ocean	8	37.1	2	28	1.3× / 6.2
Incidents · South Atlantic Ocean	8	23.3	1	30	1.5× / 5.4
Cable ops · Arabian Seasurge	7	79.8	2	34	5.0× / 1.4
Nav aids · Coral Sea	7	69.8	2	55	1.0× / 7.2
Exercises · Mediterranean Sea - Western Basinsurge	6	35.6	2	37	2.0× / 3
Exercises · Indian Oceansurge	6	14.5	0	—	10× / 0.6
Quakes · North Pacific Ocean	6	14.3	1	15	1.3× / 4.6
Nav aids · North Pacific Oceansurgelong running	5	312.5	9	481	2.1× / 2.4
Nav aids · North Sea	5	126.1	1	217	0.4× / 13
Missiles · Barentsz Sea	5	51.7	1	33	1.5× / 3.4
Other · North Atlantic Ocean	5	51.7	3	103	0.7× / 7.2
Exercises · Caribbean Sea	5	43.5	1	34	1.6× / 3.2
Missiles · North Atlantic Ocean	5	41.6	1	52	0.5× / 11.2
Surveys · Caribbean Seasurge	5	31	1	36	3.6× / 1.4
Missiles · South Atlantic Oceansurge	5	23.6	0	—	25× / 0.2
Derelicts · South Atlantic Oceansurge	5	21.7	1	26	2.8× / 1.8
Quakes · Indian Oceansurge	5	15	0	—	2.1× / 2.4
Missiles · South Pacific Oceansurge	5	13.8	3	13	2.3× / 2.2
Surveys · North Atlantic Ocean	4	624.5	19	101	0.9× / 4.6
Exercises · Black Sea	4	95	1	39	0.2× / 17.2
Incidents · Gulf of Mexicosurge	4	54	4	46	3.3× / 1.2
Spills · North Atlantic Ocean	4	44	1	44	1.1× / 3.6
Incidents · North Pacific Ocean	4	25	1	27	0.3× / 14.4
Exercises · Philippine Sea	4	18.7	0	—	0.4× / 9.2
Quakes · Philippine Seasurge	4	12	0	—	2.9× / 1.4
Nav aids · Inner Seas off the West Coast of Scotland	3	93.8	3	39	0.7× / 4.2
Surveys · Indian Oceanlong running	3	68.9	2	408	1.7× / 1.8
Other · Arafura Seasurge	3	55.2	0	—	15× / 0.2
Surveys · Bay of Biscaysurge	3	47	2	269	7.5× / 0.4
Incidents · Caribbean Sea	3	36.5	3	18	1.0× / 3
Nav aids · Southern Oceannew	3	30	1	140	new / 0
Missiles · Japan Sea	3	29	3	15	0.9× / 3.4
Nav aids · Irish Sea and St. George's Channelsurge	3	27.8	2	48	3.8× / 0.8
Spills · North Pacific Ocean	3	27	2	24	1.4× / 2.2
Exercises · Gulf of Mexico	3	26.3	0	—	1.7× / 1.8
Cable ops · South Pacific Oceansurge	3	22.5	1	22	3.0× / 1
Missiles · Indian Ocean	3	22.1	1	52	0.7× / 4.6
Surveys · North Seasurge	3	15.4	1	28	2.5× / 1.2
Surveys · English Channelsurge	3	13.5	0	—	15× / 0.2
Other · Indian Oceansurge	3	12.8	1	13	7.5× / 0.4
Quakes · South Atlantic Oceansurge	3	9	0	—	2.5× / 1.2
Incidents · Coral Sea	3	6	0	—	0.8× / 3.8
Icebergs · Labrador Sea	3	4.4	0	—	0.1× / 22.6
Nav aids · Andaman or Burma Sealong running	2	66.1	2	451	2.0× / 1
Cable ops · Philippine Sea	2	65.8	2	86	2.0× / 1
Cable ops · North Pacific Ocean	2	64.4	0	—	1.1× / 1.8
Other · Caribbean Sea	2	49.2	3	154	10× / 0.2
Wrecks · South Pacific Ocean	2	47.6	1	30	5.0× / 0.4
Other · Gulf of Mexico	2	40.4	1	137	5.0× / 0.4
Exercises · Laccadive Sea	2	35.4	1	34	0.8× / 2.6
Derelicts · Caribbean Sealong running	2	27.9	1	366	0.8× / 2.6
Exercises · Japan Sea	2	23.3	1	34	1.1× / 1.8
Cable ops · Gulf of Guineanew	2	18	0	—	new / 0
Exercises · Gulf of California	2	17.6	0	—	5.0× / 0.4
Nav aids · The Coastal Waters of Southeast Alaska and British Columbia	2	17.2	1	32	2.0× / 1
Derelicts · North Atlantic Ocean	2	15.9	1	20	0.7× / 3
Incidents · Mozambique Channelnew	2	13.8	1	12	new / 0
Surveys · Mediterranean Sea - Western Basin	2	13.5	1	44	2.5× / 0.8
Exercises · Red Sea	2	7.7	1	35	2.0× / 1
Quakes · Eastern China Sea	2	6	0	—	10× / 0.2
Containers · North Atlantic Ocean	2	6	0	—	2.0× / 1
Debris · North Atlantic Ocean	2	6	0	—	2.0× / 1
Derelicts · Indian Ocean	2	5.3	0	—	1.3× / 1.6
Derelicts · South Pacific Ocean	2	4.9	1	9	1.7× / 1.2
Restricted · South Atlantic Ocean	2	4.7	0	—	2.0× / 1
Quakes · Coral Sea	2	3.6	0	—	1.7× / 1.2
Incidents · Java Sea	2	1.9	0	—	1.3× / 1.6
Nav aids · Caribbean Sealong running	1	624.8	20	535	0.6× / 1.8
Volcanic · Philippine Sealong running	1	257.5	6	468	5.0× / 0.2
Nav aids · Gulf of Mexicolong running	1	251.1	9	481	0.3× / 3
Wrecks · North Atlantic Oceanlong running	1	203.7	2	1,165	new / 0
Wrecks · Persian Gulflong running	1	196	4	510	1.7× / 0.6
Nav aids · Mediterranean Sea - Western Basinlong running	1	133.5	1	629	0.6× / 1.6
Wrecks · Bay of Bengal	1	115.1	2	280	new / 0
Nav aids · Arabian Sea	1	66.8	2	155	1.7× / 0.6
Other · North Pacific Ocean	1	53	0	—	0.8× / 1.2
Surveys · Tasman Sea	1	48.7	0	—	5.0× / 0.2
Cable ops · South Atlantic Ocean	1	37.5	0	—	1.3× / 0.8
Cable ops · South China Sea	1	32.5	0	—	0.8× / 1.2
Surveys · Andaman or Burma Sea	1	32.4	1	112	0.7× / 1.4
Surveys · Red Sea	1	32.3	1	117	new / 0
Surveys · Gulf of Guinea	1	30.5	1	30	5.0× / 0.2
Surveys · Bass Strait	1	29.1	1	50	1.0× / 1
Derelicts · Bay of Bengal	1	29	0	—	1.3× / 0.8
Incidents · Arafura Sea	1	24.6	0	—	1.0× / 1
Spills · Gulf of Mexico	1	23	0	—	0.4× / 2.6
Exercises · Norwegian Sea	1	22.6	1	22	5.0× / 0.2
Wrecks · Gulf of Mexico	1	18.6	1	18	2.5× / 0.4
Incidents · Gulf of Guinea	1	18.5	1	18	5.0× / 0.2
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	18	1	38	0.8× / 1.2
Incidents · Bay of Bengal	1	14.5	0	—	1.0× / 1
Nav aids · Strait of Gibraltar	1	14.5	0	—	1.3× / 0.8
Incidents · Persian Gulf	1	14.3	1	14	5.0× / 0.2
Spills · Bering Sea	1	14	0	—	1.0× / 1
Surveys · Celtic Sea	1	9.1	0	—	1.7× / 0.6
War risk · Black Sea	1	9	1	9	new / 0
Nav aids · Kattegat	1	8.7	0	—	new / 0
Surveys · Philippine Sea	1	7.5	0	—	2.5× / 0.4
Piracy · Bay of Bengal	1	7	0	—	new / 0
Incidents · Ceram Sea	1	7	1	6	5.0× / 0.2
Ordnance · North Pacific Ocean	1	7	0	—	2.5× / 0.4
Piracy · South Pacific Ocean	1	7	0	—	new / 0
Other · Mediterranean Sea - Eastern Basin	1	6.3	1	6	5.0× / 0.2
Cable ops · Yellow Sea	1	6	1	5	5.0× / 0.2
Exercises · Gulf of Oman	1	5.8	0	—	5.0× / 0.2
Debris · Inner Seas off the West Coast of Scotland	1	5.5	1	5	new / 0
Quakes · North Atlantic Ocean	1	5.4	0	—	0.6× / 1.6
Exercises · Barentsz Sea	1	5	0	—	0.6× / 1.6
Nav aids · Laccadive Sea	1	4.8	0	—	1.0× / 1
Missiles · Norwegian Sea	1	4.8	0	—	new / 0
Other · Bay of Biscay	1	4.3	0	—	new / 0
Incidents · Mediterranean Sea - Eastern Basin	1	4.1	1	4	0.1× / 10
Other · Irish Sea and St. George's Channel	1	3.7	0	—	1.7× / 0.6
Other · South Atlantic Ocean	1	3.6	0	—	2.5× / 0.4
Missiles · Arctic Ocean	1	3.5	0	—	0.7× / 1.4
Other · Black Sea	1	3.5	1	3	new / 0
Debris · Arabian Sea	1	3	0	—	new / 0
Derelicts · Arafura Sea	1	3	0	—	5.0× / 0.2
Containers · Coral Sea	1	3	0	—	1.7× / 0.6
Other · Coral Sea	1	3	0	—	0.6× / 1.6
Containers · English Channel	1	3	0	—	5.0× / 0.2
Quakes · Gulf of Mexico	1	3	0	—	new / 0
Cable ops · Indian Ocean	1	3	1	3	5.0× / 0.2
Debris · Indian Ocean	1	3	0	—	0.6× / 1.8
Icebergs · Kara Sea	1	3	0	—	5.0× / 0.2
Derelicts · Mozambique Channel	1	3	0	—	1.3× / 0.8
Containers · North Pacific Ocean	1	3	0	—	new / 0
Containers · North Sea	1	3	0	—	2.5× / 0.4
Other · North Sea	1	3	0	—	1.0× / 1
Quakes · Persian Gulf	1	3	0	—	new / 0
Quakes · Solomon Sea	1	3	0	—	0.3× / 3
Quakes · South China Sea	1	3	0	—	5.0× / 0.2
Other · South China Sea	1	3	0	—	1.3× / 0.8
Debris · Tasman Sea	1	3	0	—	new / 0
Exercises · Coral Sea	1	1.9	0	—	0.7× / 1.4
Missiles · Laccadive Sea	1	1.9	0	—	1.0× / 1
Surveys · Ligurian Sea	1	1.9	0	—	new / 0
Spills · Red Sea	1	1.8	0	—	new / 0
Nav aids · Bristol Channel	1	1.6	0	—	1.7× / 0.6
Other · Bay of Bengal	1	1.5	1	1	new / 0
Surveys · Great Australian Bight	1	1.3	0	—	0.6× / 1.6
Derelicts · English Channel	1	1.2	1	1	new / 0
Debris · Persian Gulf	1	1	0	—	new / 0
Nav aids · Bass Strait	1	0.8	1	0	1.3× / 0.8
Exercises · Bering Sea	1	0.8	1	0	new / 0
Incidents · Banda Sea	1	0.4	0	—	1.7× / 0.6
Piracy · Singapore Strait	1	0.1	0	—	5.0× / 0.2
Wrecks · South China Sealong running	0	194.3	4	1,138	0.0× / 1.2
Wrecks · Arabian Sealong running	0	128.7	2	919	0.0× / 0.2
Wrecks · The Northwestern Passages	0	97	2	212	— / 0
Exercises · Aegean Sea	0	93	3	87	0.0× / 17.6
Nav aids · Indian Ocean	0	83.8	1	355	0.0× / 1.2
Wrecks · North Pacific Ocean	0	73.8	0	—	— / 0
Wrecks · South Atlantic Ocean	0	70.3	0	—	0.0× / 1
Mines · Black Sea	0	62	2	35	— / 0
Surveys · Gulf of Mexico	0	62	2	37	0.0× / 0.6
Exercises · Ionian Sea	0	62	2	87	0.0× / 0.2
Cable ops · Persian Gulf	0	62	2	231	0.0× / 0.4
Missiles · Sea of Okhotsk	0	57.6	0	—	0.0× / 0.2
Wrecks · Caribbean Sealong running	0	55.6	1	373	0.0× / 1
Surveys · Hudson Bay	0	55.6	1	225	— / 0
Wrecks · Laccadive Sea	0	55.5	1	316	0.0× / 0.2
Nav aids · Mediterranean Sea - Eastern Basin	0	53	1	325	— / 0
Surveys · South China Sealong running	0	50.7	1	931	0.0× / 0.8
Nav aids · Mozambique Channellong running	0	48.6	1	533	0.0× / 0.6
Wrecks · English Channel	0	42.1	0	—	0.0× / 1
Other · Persian Gulf	0	42.1	0	—	0.0× / 0.4
Structures · South Atlantic Ocean	0	42.1	0	—	0.0× / 0.2
Surveys · Arctic Ocean	0	42	0	—	— / 0
Surveys · The Northwestern Passages	0	42	0	—	— / 0
Incidents · Arabian Sea	0	41.6	1	33	0.0× / 5.4
Surveys · Mediterranean Sea - Eastern Basin	0	38.5	0	—	0.0× / 4.2
Wrecks · Inner Seas off the West Coast of Scotland	0	35.3	0	—	0.0× / 0.4
Incidents · Laccadive Sea	0	35.1	0	—	0.0× / 1.6
Missiles · Aegean Sea	0	31	1	87	0.0× / 0.2
Other · Arabian Sea	0	31	1	203	0.0× / 0.4

Cite: seahazards.com Sea Ledger, 2022-03, 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.