Sea Ledger, May 2022

2022-05-01 to 2022-05-31 · archive

issued: 673
warning-days in force: 10,019
in force at month end: 330
sea × type cells: 212

baseline: same month, previous 5 years (2021-05, 2020-05, 2019-05, 2018-05, 2017-05)

By type

type	issued	warning-days	in force at end
Exercises	123	1,193.9	36
Incidents	119	1,459.3	54
Icebergs	110	128	4
Surveys	64	1,711.9	53
Nav aids	56	2,858.2	99
Quakes	43	131	0
Missiles	42	265.4	7
Derelicts	29	138.1	4
Cable ops	23	352.1	11
Towing	17	26.9	1
Spills	15	209.9	6
Other	13	334.3	13
Debris	9	57.4	1
Wrecks	6	826.9	30
Containers	2	6	0
Mines	1	62.8	3
Restricted	1	9.1	0
Ordnance	0	31	1
War risk	0	31	1
Volcanic	0	186	6

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Icebergs · Southern Ocean	38	35	1	31	1.2× / 32
Icebergs · Labrador Sea	32	36.3	2	32	1.7× / 18.6
Exercises · South Pacific Oceansurge	29	129.1	4	33	3.6× / 8
Icebergs · South Atlantic Ocean	29	28	1	31	1.5× / 18.8
Incidents · North Atlantic Oceansurge	25	448.9	17	116	2.3× / 11
Exercises · North Pacific Ocean	25	236.2	11	65	1.0× / 25.2
Exercises · Bay of Bengalsurge	19	158.9	3	33	2.6× / 7.4
Incidents · South China Sea	16	219.2	7	88	0.6× / 25.8
Exercises · Arabian Seasurge	15	102	2	42	2.7× / 5.6
Towing · North Pacific Oceannew	14	15.9	1	31	new / 0
Incidents · North Pacific Ocean	12	107.4	3	45	0.8× / 14.8
Missiles · North Atlantic Ocean	12	44.6	0	—	1.1× / 11.2
Quakes · South Pacific Ocean	12	37.4	0	—	1.2× / 9.8
Nav aids · South Atlantic Ocean	11	607.5	22	187	1.0× / 10.6
Incidents · South Pacific Ocean	9	69.7	5	86	1.4× / 6.6
Quakes · North Pacific Ocean	9	27	0	—	1.3× / 6.8
Surveys · Persian Gulfsurgelong running	8	260.4	7	498	2.5× / 3.2
Surveys · South Atlantic Ocean	8	43.1	1	35	0.5× / 16
Nav aids · North Atlantic Oceanlong running	7	218	7	411	1.1× / 6.6
Surveys · Arabian Sea	7	150.6	1	190	0.8× / 8.2
Incidents · Indian Ocean	7	92.3	0	—	0.8× / 9
Spills · Gulf of Mexico	7	88	2	43	1.5× / 4.8
Exercises · North Atlantic Ocean	7	46.8	3	33	0.8× / 8.6
Derelicts · South Pacific Oceansurge	7	40.6	2	62	5.8× / 1.2
Cable ops · South Pacific Oceansurge	7	38.6	2	41	4.4× / 1.6
Missiles · Indian Ocean	7	30.2	0	—	1.9× / 3.6
Surveys · North Sea	6	125.4	3	46	1.4× / 4.4
Surveys · Indian Oceansurgelong running	6	103.5	3	469	4.3× / 1.4
Incidents · Gulf of Mexicosurge	6	89	6	32	2.7× / 2.2
Derelicts · North Atlantic Oceansurge	6	28.6	0	—	2.0× / 3
Surveys · North Atlantic Ocean	5	523.3	17	154	0.6× / 7.8
Surveys · Bay of Bengalsurge	5	90.2	3	36	8.3× / 0.6
Incidents · Caribbean Sea	5	52.9	2	21	1.1× / 4.4
Missiles · North Pacific Ocean	5	51.4	2	350	0.9× / 5.8
Missiles · South Pacific Ocean	5	43.3	1	33	1.5× / 3.4
Missiles · Barentsz Sea	5	32	0	—	1.5× / 3.4
Incidents · Laccadive Seasurge	5	23.9	1	31	3.1× / 1.6
Icebergs · Barentsz Seanew	5	15	0	—	new / 0
Quakes · Philippine Sea	5	15	0	—	1.9× / 2.6
Nav aids · Caribbean Sealong running	4	510.2	15	596	1.3× / 3
Nav aids · South Pacific Oceanlong running	4	478.9	15	573	1.1× / 3.8
Nav aids · North Sea	4	49	1	37	0.8× / 5.2
Surveys · Caribbean Seanew	4	31	1	34	new / 0
Nav aids · English Channel	4	21.5	2	31	1.3× / 3.2
Quakes · Coral Seasurge	4	12	0	—	2.9× / 1.4
Icebergs · Kara Seanew	4	11.7	0	—	new / 0
Derelicts · Caribbean Seasurge	4	9.7	0	—	5.0× / 0.8
Incidents · Coral Sea	4	4.5	0	—	1.5× / 2.6
Incidents · Arabian Sea	3	93.3	1	93	0.7× / 4.2
Cable ops · North Atlantic Ocean	3	51.7	1	40	0.5× / 6.4
Other · North Atlantic Ocean	3	46.5	2	164	1.7× / 1.8
Nav aids · Irish Sea and St. George's Channel	3	44.9	2	63	1.4× / 2.2
Exercises · Andaman or Burma Sea	3	40.6	0	—	1.5× / 2
Spills · North Pacific Ocean	3	40	1	26	0.8× / 3.8
Exercises · Laccadive Seasurge	3	39.5	2	32	2.1× / 1.4
Spills · North Atlantic Ocean	3	37	2	38	1.0× / 3
Nav aids · Inner Seas off the West Coast of Scotland	3	34.5	1	58	0.8× / 4
Incidents · Philippine Sea	3	30.8	2	28	0.8× / 4
Other · Gulf of Mexiconew	3	30.7	1	56	new / 0
Exercises · Japan Seasurge	3	30.4	0	—	3.0× / 1
Cable ops · North Pacific Ocean	3	29	1	20	1.7× / 1.8
Incidents · Bay of Bengalsurge	3	24.6	1	22	5.0× / 0.6
Surveys · Norwegian Sea	3	22.7	3	11	1.3× / 2.4
Derelicts · Indian Ocean	3	22.1	1	23	1.0× / 3
Surveys · Sea of Okhotsksurge	3	15.7	3	7	3.0× / 1
Nav aids · Coral Sea	3	14.5	2	12	0.4× / 7.2
Towing · South Pacific Oceannew	3	11	0	—	new / 0
Quakes · South Atlantic Ocean	3	9	0	—	1.9× / 1.6
Exercises · Coral Seasurge	3	2.5	0	—	2.1× / 1.4
Exercises · Indian Ocean	3	0.3	0	—	1.5× / 2
Nav aids · North Pacific Oceanlong running	2	295.8	10	542	0.5× / 3.8
Wrecks · Arabian Sea	2	103.6	5	312	3.3× / 0.6
Other · South Atlantic Ocean	2	51	2	32	10× / 0.2
Incidents · Tyrrhenian Seanew	2	40.7	1	24	new / 0
Other · South Pacific Ocean	2	36.2	2	33	3.3× / 0.6
Incidents · South Atlantic Ocean	2	34.6	2	36	0.5× / 4.4
Nav aids · Bass Strait	2	31.9	0	—	2.0× / 1
Wrecks · South Atlantic Ocean	2	28.9	2	24	1.4× / 1.4
Exercises · Tasman Seanew	2	28	0	—	new / 0
Incidents · Mediterranean Sea - Eastern Basin	2	20.6	0	—	0.2× / 11.6
Cable ops · Caribbean Sea	2	18.2	1	18	3.3× / 0.6
Missiles · Greenland Seanew	2	14	0	—	new / 0
Cable ops · Gulf of Adennew	2	10.2	0	—	new / 0
Exercises · Red Sea	2	9.6	1	19	5.0× / 0.4
Cable ops · Celtic Sea	2	8.7	1	11	10× / 0.2
Missiles · Sea of Okhotsknew	2	8	2	4	new / 0
Nav aids · Celtic Sea	2	6.4	2	5	2.5× / 0.8
Debris · Arafura Seanew	2	6	0	—	new / 0
Quakes · North Atlantic Ocean	2	6	0	—	2.5× / 0.8
Debris · South Pacific Ocean	2	6	0	—	2.0× / 1
Derelicts · Tasman Sea	2	6	0	—	10× / 0.2
Exercises · Mozambique Channelnew	2	4.7	0	—	new / 0
Debris · Celtic Sea	2	4.1	0	—	10× / 0.2
Incidents · Java Sea	2	3.8	1	3	5.0× / 0.4
Derelicts · English Channel	2	3.5	0	—	3.3× / 0.6
Wrecks · Laccadive Sea	1	60.5	2	237	5.0× / 0.2
Cable ops · Arabian Sea	1	49.1	1	62	1.7× / 0.6
Exercises · South Atlantic Ocean	1	43.9	1	50	0.1× / 6.8
Wrecks · Caribbean Sea	1	41.9	2	220	5.0× / 0.2
Cable ops · Philippine Sea	1	41.3	1	48	1.7× / 0.6
Exercises · Black Sea	1	40.9	1	69	0.1× / 13.6
Nav aids · Indian Ocean	1	40.9	2	117	1.3× / 0.8
Surveys · Andaman or Burma Sea	1	39.6	0	—	0.8× / 1.2
Exercises · Barentsz Sea	1	38.3	2	36	0.5× / 2
Nav aids · Mediterranean Sea - Eastern Basin	1	32.3	2	363	2.5× / 0.4
Surveys · Irish Sea and St. George's Channel	1	27.7	0	—	5.0× / 0.2
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	22	0	—	1.7× / 0.6
Surveys · Timor Sea	1	20	0	—	5.0× / 0.2
Spills · South Pacific Ocean	1	18.9	1	18	new / 0
Derelicts · Laccadive Sea	1	18	0	—	2.5× / 0.4
Incidents · Andaman or Burma Sea	1	16.7	0	—	2.5× / 0.4
Incidents · Mediterranean Sea - Western Basin	1	16.1	1	42	2.5× / 0.4
Incidents · Balearic (Iberian Sea)	1	15	0	—	new / 0
Surveys · Mediterranean Sea - Eastern Basin	1	14.6	1	53	0.3× / 3.4
Surveys · North Pacific Ocean	1	14.5	1	42	1.3× / 0.8
Cable ops · Mediterranean Sea - Western Basin	1	12.2	0	—	2.5× / 0.4
Surveys · Barentsz Sea	1	11.6	1	11	1.7× / 0.6
Exercises · Gulf of St. Lawrence	1	9.3	0	—	new / 0
Restricted · Japan Sea	1	9.1	0	—	new / 0
Nav aids · Gulf of Alaska	1	7.9	1	7	1.7× / 0.6
Exercises · Sea of Okhotsk	1	7.8	0	—	new / 0
Nav aids · Persian Gulf	1	7.3	1	7	new / 0
Other · Red Sea	1	6.5	0	—	new / 0
Surveys · Mediterranean Sea - Western Basin	1	5.5	1	5	0.5× / 2
Exercises · Norwegian Sea	1	5.4	0	—	0.5× / 2.2
Surveys · Celtic Sea	1	4.6	0	—	1.7× / 0.6
Nav aids · Bay of Bengal	1	4.5	0	—	2.5× / 0.4
Missiles · Bay of Bengal	1	4.1	0	—	5.0× / 0.2
Incidents · Gulf of Thailand	1	3.8	1	3	1.7× / 0.6
Quakes · Bismarck Sea	1	3.6	0	—	1.3× / 0.8
Missiles · Japan Sea	1	3.5	1	3	0.4× / 2.8
Surveys · Aegean Sea	1	3.4	1	3	1.7× / 0.6
Incidents · Gulf of Alaska	1	3.2	1	3	new / 0
Quakes · Alboran Sea	1	3	0	—	new / 0
Quakes · Arctic Ocean	1	3	0	—	new / 0
Quakes · Banda Sea	1	3	0	—	1.7× / 0.6
Debris · Bay of Bengal	1	3	0	—	5.0× / 0.2
Incidents · Bay of Biscay	1	3	1	3	new / 0
Quakes · Eastern China Sea	1	3	0	—	2.5× / 0.4
Derelicts · Gulf of Mexico	1	3	0	—	1.7× / 0.6
Quakes · Indian Ocean	1	3	0	—	0.4× / 2.4
Derelicts · Ionian Sea	1	3	0	—	new / 0
Containers · Irish Sea and St. George's Channel	1	3	0	—	new / 0
Quakes · Molukka Sea	1	3	0	—	new / 0
Debris · North Atlantic Ocean	1	3	0	—	0.8× / 1.2
Debris · North Pacific Ocean	1	3	0	—	2.5× / 0.4
Containers · Singapore Strait	1	3	0	—	new / 0
Quakes · Solomon Sea	1	3	0	—	1.3× / 0.8
Derelicts · South Atlantic Ocean	1	3	0	—	0.2× / 5
Incidents · Ceram Sea	1	2.6	0	—	new / 0
Exercises · Mediterranean Sea - Eastern Basin	1	2.3	0	—	0.1× / 17.8
Other · Java Sea	1	1.9	0	—	5.0× / 0.2
Missiles · Laccadive Sea	1	1.8	0	—	1.7× / 0.6
Incidents · Bali Sea	1	1.6	0	—	5.0× / 0.2
Missiles · South China Sea	1	1.5	0	—	1.0× / 1
Incidents · Malacca Strait	1	1.4	1	1	2.5× / 0.4
Nav aids · Davis Strait	1	1.1	0	—	0.7× / 1.4
Icebergs · Davis Strait	1	1	0	—	new / 0
Icebergs · North Atlantic Ocean	1	1	0	—	0.1× / 13.6
Incidents · Celtic Sea	1	0.9	0	—	5.0× / 0.2
Mines · Persian Gulf	1	0.8	1	0	new / 0
Other · Timor Sea	1	0.8	1	0	new / 0
Derelicts · North Pacific Ocean	1	0.6	1	0	0.3× / 3.8
Incidents · Arafura Sea	1	0.5	0	—	1.3× / 0.8
Incidents · Solomon Sea	1	0.4	0	—	5.0× / 0.2
Nav aids · Gulf of St. Lawrence	1	0.1	0	—	new / 0
Cable ops · South Atlantic Ocean	1	0.1	0	—	1.3× / 0.8
Incidents · Timor Sea	1	0.1	0	—	0.8× / 1.2
Nav aids · Gulf of Mexicolong running	0	197.3	6	542	0.0× / 2.8
Volcanic · Philippine Sealong running	0	186	6	529	— / 0
Wrecks · South China Sealong running	0	124	4	1,181	0.0× / 0.4
Exercises · Aegean Sea	0	93	3	148	0.0× / 8.6
Wrecks · Bay of Bengal	0	93	3	189	0.0× / 0.2
Wrecks · Persian Gulflong running	0	93	3	454	0.0× / 0.4
Nav aids · Andaman or Burma Sealong running	0	62	2	512	0.0× / 0.4
Nav aids · Arabian Sea	0	62	2	216	0.0× / 2.8
Mines · Black Sea	0	62	2	96	— / 0
Other · Caribbean Sea	0	62	2	215	— / 0
Nav aids · Gulf of Californialong running	0	62	2	469	— / 0
Surveys · Gulf of Mexico	0	62	2	98	0.0× / 1.8
Exercises · Ionian Sea	0	62	2	148	— / 0
Wrecks · North Atlantic Oceanlong running	0	62	2	370	0.0× / 1
Wrecks · North Sea	0	62	2	171	0.0× / 1
Cable ops · Persian Gulf	0	62	2	292	0.0× / 0.6
Wrecks · The Northwestern Passages	0	62	2	271	— / 0
Surveys · Bay of Biscay	0	46	1	111	— / 0
Exercises · Caribbean Sea	0	35.7	1	83	0.0× / 1.2
Wrecks · South Pacific Ocean	0	34	1	85	0.0× / 1.2
Missiles · Aegean Sea	0	31	1	148	0.0× / 0.8
Other · Arabian Sea	0	31	1	264	0.0× / 0.8
Nav aids · Bering Sea	0	31	1	100	— / 0
War risk · Black Sea	0	31	1	70	— / 0
Other · Coral Sea	0	31	1	41	0.0× / 0.2
Wrecks · Gulf of Mexico	0	31	1	79	— / 0
Surveys · Hudson Bay	0	31	1	286	— / 0
Cable ops · Indian Ocean	0	31	1	64	0.0× / 0.8
Debris · Inner Seas off the West Coast of Scotland	0	31	1	66	— / 0
Surveys · Laccadive Sea	0	31	1	108	0.0× / 0.4
Ordnance · North Sea	0	31	1	117	0.0× / 2.4
Surveys · Red Sea	0	31	1	63	— / 0

Cite: seahazards.com Sea Ledger, 2022-05, 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.