Sea Ledger, January 2019

2019-01-01 to 2019-01-31 · archive

issued: 599
warning-days in force: 9,904
in force at month end: 335
sea × type cells: 208

baseline: same month, previous 5 years (2018-01, 2017-01, 2016-01, 2015-01, 2014-01)

By type

type	issued	warning-days	in force at end
Incidents	114	822.9	33
Exercises	105	1,131.3	39
Icebergs	81	83.7	4
Nav aids	73	2,048.6	68
Surveys	54	2,049.5	66
Derelicts	43	217.5	6
Quakes	34	98.7	3
Missiles	33	267	9
Wrecks	16	2,246.3	77
Cable ops	16	191.6	4
Other	7	319.4	11
Debris	6	17.5	2
Spills	5	65	1
Piracy	4	27.2	2
Ordnance	4	120.2	4
Structures	2	80.5	3
Restricted	2	98.8	3
Volcanic	0	10.7	0
Storms	0	7.1	0

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Icebergs · Labrador Sea	32	37	2	32	1.1× / 28.4
Icebergs · South Atlantic Oceansurge	31	29.5	1	31	2.3× / 13.4
Incidents · South China Sea	27	240.2	9	39	1.0× / 27
Surveys · South Atlantic Ocean	20	281.6	7	303	1.9× / 10.8
Exercises · North Pacific Ocean	20	139.4	7	65	0.9× / 21.8
Icebergs · Southern Oceansurge	18	17.2	1	28	2.4× / 7.4
Incidents · North Pacific Ocean	16	100.1	1	40	0.6× / 26.6
Exercises · Mediterranean Sea - Eastern Basinsurge	15	174.1	4	91	2.8× / 5.4
Derelicts · North Atlantic Oceansurge	14	59.6	2	81	3.7× / 3.8
Incidents · South Pacific Oceansurge	12	57.1	1	28	2.5× / 4.8
Missiles · North Pacific Ocean	11	73	2	321	1.8× / 6.2
Quakes · South Pacific Ocean	11	27.4	3	21	1.2× / 9.2
Nav aids · South Atlantic Ocean	10	502.3	16	183	1.4× / 7.4
Incidents · Arabian Seasurge	10	81.1	7	35	4.5× / 2.2
Exercises · South Atlantic Ocean	10	51.7	1	27	0.9× / 10.8
Incidents · Coral Seasurge	10	17.5	1	27	2.8× / 3.6
Nav aids · North Sea	9	170.8	7	63	0.5× / 17.8
Exercises · Arabian Sea	9	110	4	65	1.2× / 7.4
Exercises · Black Sea	9	83.1	3	27	1.1× / 8.6
Exercises · Bay of Bengal	9	46.8	2	34	1.2× / 7.6
Exercises · Aegean Sealong running	8	196.8	7	400	1.0× / 8.2
Missiles · Black Seasurge	8	90.4	4	27	3.3× / 2.4
Derelicts · North Pacific Oceansurge	8	18.5	0	—	2.9× / 2.8
Nav aids · North Atlantic Oceanlong running	7	179	7	497	1.3× / 5.4
Nav aids · North Pacific Oceansurge	7	115.8	2	201	2.7× / 2.6
Surveys · Arabian Sea	6	251.5	9	86	1.4× / 4.2
Wrecks · South China Seasurge	6	207.3	9	154	30× / 0.2
Derelicts · Caribbean Seasurge	6	19.6	1	31	6.0× / 1
Surveys · Mediterranean Sea - Eastern Basin	5	123.4	3	237	1.9× / 2.6
Quakes · North Pacific Ocean	5	17.1	0	—	1.0× / 4.8
Surveys · North Atlantic Oceansurgelong running	4	221.2	6	441	2.0× / 2
Nav aids · Caribbean Seasurgelong running	4	193.6	8	507	3.3× / 1.2
Exercises · South China Sea	4	107	3	34	1.8× / 2.2
Wrecks · North Seasurgelong running	4	93.5	4	629	4.0× / 1
Nav aids · Coral Sea	4	79.3	2	56	1.3× / 3.2
Incidents · Indian Ocean	4	53.6	2	43	0.9× / 4.4
Cable ops · North Seasurge	4	39.6	1	52	2.5× / 1.6
Piracy · Gulf of Guineasurge	4	27.2	2	29	4.0× / 1
Nav aids · Indian Oceanlong running	4	20.8	1	530	1.3× / 3
Exercises · Indian Oceansurge	4	16.4	0	—	2.9× / 1.4
Missiles · South Pacific Oceansurge	4	14.6	0	—	4.0× / 1
Quakes · Indian Oceansurge	4	12	0	—	2.5× / 1.6
Incidents · Gulf of Thailandnew	4	11.6	2	42	new / 0
Cable ops · Mediterranean Sea - Western Basinnew	4	10	0	—	new / 0
Nav aids · Gulf of Alaskasurge	4	2.6	0	—	2.0× / 2
Surveys · Persian Gulfsurge	3	141.2	5	127	7.5× / 0.4
Wrecks · Arabian Seanew	3	93.8	4	47	new / 0
Spills · Gulf of Mexico	3	42	0	—	0.7× / 4.4
Nav aids · Arabian Seasurge	3	39.8	1	174	3.0× / 1
Incidents · Java Sea	3	35.9	0	—	1.9× / 1.6
Derelicts · Indian Ocean	3	33.6	0	—	1.4× / 2.2
Surveys · Bay of Bengal	3	29.1	2	48	1.7× / 1.8
Derelicts · Coral Seasurge	3	27	1	28	2.5× / 1.2
Cable ops · South Pacific Oceansurge	3	26.9	1	26	7.5× / 0.4
Incidents · Laccadive Sea	3	21.9	2	16	1.9× / 1.6
Missiles · North Atlantic Ocean	3	21	2	57	0.6× / 5.2
Incidents · Great Australian Bightsurge	3	18.7	0	—	5.0× / 0.6
Incidents · Philippine Sea	3	17.8	1	129	0.4× / 8
Incidents · Caribbean Sea	3	16.1	1	47	0.8× / 3.8
Quakes · Philippine Seasurge	3	9.2	0	—	2.1× / 1.4
Quakes · Coral Sea	3	9	0	—	1.7× / 1.8
Derelicts · Laccadive Seasurge	3	6.6	1	27	15× / 0.2
Missiles · Philippine Seasurge	3	5.9	0	—	2.5× / 1.2
Nav aids · Irish Sea and St. George's Channel	3	3.2	0	—	1.4× / 2.2
Wrecks · North Atlantic Oceanlong running	2	229.6	9	731	10× / 0.2
Nav aids · South Pacific Ocean	2	146.3	5	178	1.7× / 1.2
Nav aids · Gulf of Mexicolong running	2	119.1	2	727	0.6× / 3.2
Ordnance · North Sea	2	93	3	71	2.5× / 0.8
Surveys · Indian Ocean	2	71.2	2	31	1.1× / 1.8
Incidents · North Atlantic Ocean	2	46.9	1	143	0.1× / 19.6
Other · North Sea	2	44.3	2	27	0.9× / 2.2
Derelicts · South Pacific Ocean	2	37	1	92	0.7× / 3
Nav aids · English Channel	2	36.9	1	122	0.5× / 4.4
Restricted · South Atlantic Oceannew	2	36.8	1	62	new / 0
Exercises · Philippine Sea	2	36.2	1	34	0.6× / 3.4
Incidents · Mediterranean Sea - Eastern Basin	2	31.9	1	36	0.1× / 19.8
Exercises · Laccadive Sea	2	31.2	1	34	1.1× / 1.8
Surveys · Andaman or Burma Sea	2	31.1	2	57	5.0× / 0.4
Nav aids · Mediterranean Sea - Western Basin	2	30.4	2	85	1.1× / 1.8
Exercises · North Atlantic Ocean	2	27.7	2	92	0.3× / 6.2
Incidents · Eastern China Sea	2	20	1	47	2.5× / 0.8
Exercises · Japan Sea	2	15.2	1	12	10× / 0.2
Missiles · Laccadive Sea	2	8.9	0	—	1.4× / 1.4
Exercises · South Pacific Ocean	2	6.1	0	—	0.5× / 4
Quakes · Bismarck Sea	2	6	0	—	1.7× / 1.2
Derelicts · Arabian Sea	2	4.2	0	—	5.0× / 0.4
Other · North Pacific Ocean	2	3.6	0	—	3.3× / 0.6
Nav aids · Bay of Bengal	2	2.1	2	1	5.0× / 0.4
Exercises · Mediterranean Sea - Western Basinnew	2	2.1	0	—	new / 0
Incidents · Flores Sea	2	0.8	0	—	5.0× / 0.4
Incidents · Arafura Sea	2	0.6	0	—	3.3× / 0.6
Other · South China Sea	1	69.7	3	311	1.7× / 0.6
Nav aids · Bass Strait	1	62.4	2	75	1.7× / 0.6
Nav aids · Inner Seas off the West Coast of Scotland	1	62.4	2	43	0.3× / 3
Surveys · Sea of Okhotsk	1	44.6	2	83	new / 0
Structures · South Atlantic Ocean	1	42	1	38	2.5× / 0.4
Wrecks · Bay of Bengal	1	41.1	2	163	5.0× / 0.2
Nav aids · Celtic Sea	1	33.9	1	32	1.0× / 1
Nav aids · Andaman or Burma Sea	1	33.1	1	62	5.0× / 0.2
Surveys · Malacca Strait	1	31	1	40	new / 0
Surveys · Philippine Sea	1	31	1	55	new / 0
Nav aids · Southern Ocean	1	30.6	1	30	new / 0
Surveys · Laccadive Sea	1	20	1	20	1.3× / 0.8
Surveys · Bass Strait	1	19.2	0	—	new / 0
Ordnance · English Channel	1	17.5	1	17	new / 0
Nav aids · Tasman Sea	1	17.4	1	102	2.5× / 0.4
Surveys · Gulf of Guinea	1	17.3	1	17	new / 0
Missiles · Norwegian Sea	1	14.2	0	—	new / 0
Spills · North Atlantic Ocean	1	14	0	—	0.5× / 2.2
Cable ops · Savu Sea	1	14	0	—	new / 0
Incidents · Malacca Strait	1	12.8	1	12	5.0× / 0.2
Cable ops · Indian Ocean	1	12.4	1	12	1.7× / 0.6
Incidents · South Atlantic Ocean	1	12.2	0	—	0.1× / 7
Incidents · Balearic (Iberian Sea)	1	10.6	1	10	new / 0
Surveys · Southern Ocean	1	10.6	1	10	0.5× / 2
Other · North Atlantic Ocean	1	9.4	0	—	0.8× / 1.2
Spills · North Pacific Ocean	1	9	1	9	0.4× / 2.8
Cable ops · Irish Sea and St. George's Channel	1	8.3	0	—	new / 0
Exercises · Sea of Azov	1	8.1	0	—	1.7× / 0.6
Missiles · Indian Ocean	1	8	0	—	0.8× / 1.2
Cable ops · North Atlantic Ocean	1	7.6	0	—	0.7× / 1.4
Structures · Caribbean Sea	1	7.5	1	7	new / 0
Exercises · Yellow Sea	1	6.4	0	—	0.1× / 9.8
Ordnance · North Pacific Ocean	1	6.1	0	—	2.5× / 0.4
Derelicts · Black Sea	1	5.1	0	—	new / 0
Exercises · Baltic Sea	1	5	0	—	0.7× / 1.4
Surveys · North Sea	1	4.9	0	—	1.0× / 1
Other · Arabian Sea	1	4.7	1	4	2.5× / 0.4
Exercises · Barentsz Sea	1	4.6	0	—	5.0× / 0.2
Incidents · Ionian Sea	1	4.6	1	4	1.0× / 1
Nav aids · Strait of Gibraltar	1	4.6	0	—	2.5× / 0.4
Cable ops · Balearic (Iberian Sea)	1	4.3	0	—	5.0× / 0.2
Surveys · South Pacific Ocean	1	3.8	1	3	5.0× / 0.2
Quakes · Arafura Sea	1	3	0	—	2.5× / 0.4
Quakes · Banda Sea	1	3	0	—	2.5× / 0.4
Debris · Coral Sea	1	3	0	—	5.0× / 0.2
Debris · Indian Ocean	1	3	0	—	1.3× / 0.8
Quakes · Molukka Sea	1	3	0	—	1.7× / 0.6
Debris · North Atlantic Ocean	1	3	0	—	0.7× / 1.4
Quakes · Solomon Sea	1	3	0	—	0.6× / 1.8
Derelicts · South China Sea	1	3	0	—	0.4× / 2.4
Quakes · South China Sea	1	3	0	—	5.0× / 0.2
Debris · South Pacific Ocean	1	3	0	—	2.5× / 0.4
Quakes · Sulu Sea	1	3	0	—	new / 0
Incidents · Yellow Sea	1	3	0	—	new / 0
Debris · North Pacific Ocean	1	2.6	1	2	1.3× / 0.8
Debris · North Sea	1	2.3	1	2	5.0× / 0.2
Exercises · Alboran Sea	1	1.4	1	1	1.7× / 0.6
Nav aids · Arafura Sea	1	0.1	0	—	1.7× / 0.6
Incidents · Tasman Sea	1	0	0	—	0.6× / 1.6
Wrecks · Caribbean Sealong running	0	685.6	22	745	0.0× / 1.6
Surveys · Arctic Oceanlong running	0	186	6	1,654	— / 0
Surveys · The Northwestern Passageslong running	0	186	6	545	— / 0
Wrecks · North Pacific Oceanlong running	0	155	5	594	— / 0
Other · Caribbean Sealong running	0	124	4	741	0.0× / 1
Wrecks · Gulf of Mexicolong running	0	124	4	686	— / 0
Wrecks · Hudson Strait	0	124	4	117	— / 0
Surveys · Beaufort Sealong running	0	103.4	3	2,315	— / 0
Surveys · Bering Sealong running	0	93	3	569	— / 0
Wrecks · East Siberian Sea	0	93	3	209	— / 0
Wrecks · The Northwestern Passageslong running	0	69.1	2	523	— / 0
Wrecks · Persian Gulf	0	67.6	2	72	0.0× / 0.6
Surveys · Black Sea	0	62	2	120	0.0× / 0.4
Exercises · Ionian Sealong running	0	62	2	400	0.0× / 2.2
Wrecks · Mediterranean Sea - Western Basin	0	62	2	58	— / 0
Wrecks · South Pacific Ocean	0	45.2	1	118	0.0× / 1
Cable ops · Mediterranean Sea - Eastern Basin	0	37.5	0	—	0.0× / 1.8
Wrecks · Mediterranean Sea - Eastern Basinlong running	0	34.7	1	463	— / 0
Nav aids · South China Sea	0	34.6	1	95	0.0× / 0.2
Missiles · Aegean Sealong running	0	31	1	400	0.0× / 0.8
Restricted · Caribbean Sealong running	0	31	1	604	— / 0
Surveys · Caribbean Sealong running	0	31	1	749	0.0× / 0.6
Nav aids · Great Australian Bight	0	31	1	41	— / 0
Wrecks · Gulf of California	0	31	1	107	— / 0
Other · Gulf of Thailand	0	31	1	323	— / 0
Wrecks · Indian Ocean	0	31	1	287	— / 0
Nav aids · Kara Sea	0	31	1	56	0.0× / 0.4
Nav aids · Laccadive Sea	0	31	1	56	0.0× / 0.4
Restricted · North Sea	0	31	1	42	0.0× / 0.4
Cable ops · Sea of Okhotsk	0	31	1	125	— / 0
Wrecks · Solomon Sea	0	31	1	172	— / 0
Structures · South China Sea	0	31	1	262	— / 0
Surveys · Tasman Sea	0	31	1	152	0.0× / 0.4
Surveys · Bay of Biscay	0	24.4	0	—	— / 0
Nav aids · Mediterranean Sea - Eastern Basin	0	23.7	0	—	0.0× / 0.2
Other · Sea of Okhotsk	0	11.4	0	—	— / 0
Other · Davis Strait	0	10.5	0	—	— / 0
Wrecks · Gulf of Guinea	0	9.8	0	—	— / 0
Wrecks · English Channel	0	7.2	0	—	0.0× / 0.8
Storms · Caribbean Sea	0	7.1	0	—	— / 0
Volcanic · Caribbean Sea	0	7.1	0	—	— / 0
Incidents · Bismarck Sea	0	4.3	0	—	0.0× / 3.4
Nav aids · Aegean Sea	0	3.6	0	—	— / 0
Nav aids · Alboran Sea	0	3.6	0	—	— / 0
Wrecks · Bristol Channel	0	3.6	0	—	— / 0
Wrecks · Celtic Sea	0	3.6	0	—	— / 0
Other · English Channel	0	3.6	0	—	0.0× / 1.2
Other · Hudson Strait	0	3.6	0	—	— / 0
Other · Inner Seas off the West Coast of Scotland	0	3.6	0	—	— / 0
Nav aids · Mozambique Channel	0	3.6	0	—	— / 0

Cite: seahazards.com Sea Ledger, 2019-01, 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.