Sea Ledger, January 2016

2016-01-01 to 2016-01-31 · archive

issued: 514
warning-days in force: 10,448
in force at month end: 327
sea × type cells: 228

baseline: same month, previous 5 years (2015-01, 2014-01, 2013-01, 2012-01, 2011-01)

By type

type	issued	warning-days	in force at end
Incidents	133	1,010.8	18
Exercises	96	1,040.8	32
Nav aids	67	2,905.6	94
Icebergs	38	52.6	2
Quakes	31	89.3	3
Missiles	27	198	7
Cable ops	25	1,052.9	34
Derelicts	24	173.6	5
Surveys	20	1,565.4	52
Other	15	465.5	17
Spills	13	177	6
Debris	10	33.1	0
Piracy	4	25.7	1
Containers	4	10.3	1
Restricted	2	343	13
Wrecks	2	1,008.7	32
Storms	2	4.7	0
Towing	1	12.1	1
War risk	0	62	2
Volcanic	0	93	3
Structures	0	93	3
Ordnance	0	31	1

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Incidents · Mediterranean Sea - Eastern Basinsurge	30	144.2	5	35	6.5× / 4.6
Incidents · North Atlantic Ocean	26	288	2	63	1.4× / 18
Incidents · North Pacific Ocean	26	133.4	4	31	1.0× / 26.8
Exercises · North Pacific Oceansurge	26	106.4	4	35	2.0× / 13
Icebergs · Labrador Sea	20	20.1	2	24	1.7× / 12
Exercises · Yellow Sea	16	140.9	4	33	1.8× / 9
Nav aids · North Sea	15	144.4	4	166	0.8× / 20
Nav aids · South Atlantic Oceansurge	12	402.4	15	142	2.1× / 5.8
Quakes · South Pacific Ocean	11	33	0	—	1.5× / 7.2
Exercises · Aegean Seasurgelong running	10	336.9	11	390	2.2× / 4.6
Missiles · North Pacific Oceansurge	10	59.3	1	24	2.8× / 3.6
Exercises · South Atlantic Ocean	10	44.5	0	—	1.2× / 8.4
Icebergs · South Atlantic Oceansurge	10	23.5	0	—	4.2× / 2.4
Incidents · South China Sea	9	63.7	0	—	0.6× / 16.2
Incidents · Philippine Seasurge	8	40	0	—	2.0× / 4
Missiles · Black Seasurge	7	53.8	2	23	35× / 0.2
Icebergs · Gulf of St. Lawrencesurge	7	6.7	0	—	5.0× / 1.4
Other · North Seasurgelong running	6	112.9	4	856	5.0× / 1.2
Incidents · Caribbean Sea	6	91.8	2	62	1.7× / 3.6
Incidents · South Pacific Ocean	6	77.3	2	29	1.1× / 5.4
Exercises · Bay of Bengal	6	45.8	1	27	0.8× / 7.4
Nav aids · North Atlantic Oceanlong running	5	229.4	7	984	1.1× / 4.6
Surveys · Arabian Seasurge	5	189.4	6	52	8.3× / 0.6
Nav aids · Inner Seas off the West Coast of Scotland	5	71.7	4	207	1.5× / 3.4
Exercises · Arabian Sea	5	70.6	2	50	0.9× / 5.8
Nav aids · English Channel	5	59.1	2	56	1.6× / 3.2
Exercises · South China Seasurge	5	53.4	2	35	3.6× / 1.4
Quakes · Philippine Seasurge	5	15	0	—	6.3× / 0.8
Nav aids · Indian Oceanlong running	4	146.5	5	711	1.3× / 3.2
Surveys · South Atlantic Ocean	4	140.9	4	150	0.8× / 5.2
Spills · Gulf of Mexico	4	70	3	42	1.5× / 2.6
Derelicts · North Atlantic Oceanlong running	4	42.7	2	529	1.1× / 3.6
Exercises · Black Sea	4	38.5	2	19	1.0× / 4
Spills · North Atlantic Oceansurge	4	37	3	30	5.0× / 0.8
Incidents · Indian Ocean	4	34.2	0	—	0.7× / 5.4
Nav aids · Irish Sea and St. George's Channelsurge	4	15	0	—	2.9× / 1.4
Derelicts · Indian Ocean	4	12	0	—	1.3× / 3.2
Cable ops · Bay of Bengal	3	132	5	69	1.3× / 2.4
Nav aids · Coral Sealong running	3	107.2	4	653	0.9× / 3.2
Exercises · Ionian Seasurgelong running	3	89.9	3	390	3.0× / 1
Cable ops · South Atlantic Ocean	3	88	3	113	0.1× / 32.2
Spills · North Pacific Oceansurge	3	42	0	—	3.8× / 0.8
Derelicts · South Pacific Oceanlong running	3	40	1	1,313	1.0× / 3
Incidents · Mediterranean Sea - Western Basinsurge	3	30.5	1	27	5.0× / 0.6
Other · English Channelsurge	3	19.4	1	17	7.5× / 0.4
Exercises · Caribbean Seasurge	3	19.3	0	—	2.5× / 1.2
Missiles · South Pacific Oceansurge	3	16.9	1	16	2.5× / 1.2
Piracy · Gulf of Guineanew	3	11.9	1	12	new / 0
Derelicts · Caribbean Seasurge	3	7.8	0	—	7.5× / 0.4
Debris · English Channelsurge	3	7	0	—	15× / 0.2
Derelicts · Bay of Biscaysurge	3	2.3	1	2	7.5× / 0.4
Nav aids · Gulf of Mexicolong running	2	227.3	7	715	0.8× / 2.4
Restricted · Sea of Azovnew	2	95	5	61	new / 0
Nav aids · Kara Seanewlong running	2	72.6	3	1,607	new / 0
Nav aids · Bass Straitlong running	2	63.4	2	1,035	5.0× / 0.4
Surveys · Indian Ocean	2	60.2	3	135	1.4× / 1.4
Surveys · Laccadive Sea	2	48.5	2	52	10× / 0.2
Incidents · Arabian Sea	2	38.6	0	—	1.0× / 2
Cable ops · Ionian Seanew	2	33.9	0	—	new / 0
Exercises · Laccadive Sea	2	31.4	1	32	1.0× / 2
Incidents · Gulf of Mexico	2	11	0	—	0.6× / 3.2
Missiles · North Atlantic Ocean	2	10.2	1	9	0.7× / 2.8
Derelicts · South China Sea	2	10.2	0	—	2.5× / 0.8
Quakes · North Pacific Ocean	2	8.5	0	—	0.5× / 4
Cable ops · North Sea	2	6.3	1	14	1.3× / 1.6
Quakes · Solomon Sea	2	6.1	0	—	10× / 0.2
Derelicts · Bay of Bengal	2	6	0	—	2.0× / 1
Quakes · Indian Ocean	2	6	0	—	0.7× / 2.8
Containers · North Pacific Ocean	2	6	0	—	5.0× / 0.4
Debris · Philippine Sea	2	6	0	—	10× / 0.2
Derelicts · Philippine Sea	2	6	0	—	2.0× / 1
Nav aids · Gulf of Alaska	2	5.1	0	—	1.4× / 1.4
Exercises · North Atlantic Ocean	2	4.5	1	3	1.3× / 1.6
Quakes · Bismarck Sea	2	2.4	2	1	10× / 0.2
Incidents · South Atlantic Ocean	2	0.9	1	31	0.3× / 7.6
Incidents · Timor Sea	2	0.7	0	—	10× / 0.2
Incidents · Arafura Seanew	2	0.5	0	—	new / 0
Nav aids · Caribbean Sealong running	1	395.3	13	720	2.5× / 0.4
Surveys · North Atlantic Oceanlong running	1	241	7	607	0.8× / 1.2
Cable ops · Gulf of Mexico	1	178.9	4	205	0.6× / 1.6
Nav aids · Bay of Bengal	1	172.5	4	173	1.7× / 0.6
Nav aids · Celtic Sealong running	1	98.9	3	1,193	0.4× / 2.4
Cable ops · Arabian Sea	1	70.9	3	109	0.5× / 2
Wrecks · South Pacific Ocean	1	64.6	2	123	2.5× / 0.4
Cable ops · Indian Ocean	1	64.4	1	66	1.0× / 1
Surveys · Caribbean Sea	1	51.4	2	93	5.0× / 0.2
Other · Arabian Sea	1	42.5	2	125	new / 0
Surveys · Gulf of Suez	1	36.6	1	31	2.5× / 0.4
Cable ops · Mediterranean Sea - Eastern Basin	1	36	2	43	0.5× / 2
Wrecks · Andaman or Burma Sea	1	35.5	2	122	5.0× / 0.2
Cable ops · Andaman or Burma Sea	1	34.6	2	90	1.7× / 0.6
Nav aids · Laccadive Sea	1	32.1	1	47	5.0× / 0.2
Other · South China Sealong running	1	31.1	1	431	5.0× / 0.2
Missiles · Aegean Sealong running	1	30.4	1	394	1.7× / 0.6
Other · Black Sea	1	28.3	1	28	2.5× / 0.4
Cable ops · Tasman Sea	1	25.9	1	25	0.5× / 2
Surveys · Mozambique Channel	1	25.6	1	25	5.0× / 0.2
Incidents · Coral Sea	1	24.9	1	24	0.2× / 4.4
Cable ops · Philippine Sea	1	16.8	0	—	1.3× / 0.8
Surveys · Persian Gulf	1	16.7	1	16	new / 0
Cable ops · Caribbean Sea	1	15.2	1	15	2.5× / 0.4
Cable ops · Yellow Sea	1	14.5	0	—	1.3× / 0.8
Spills · Gulf of Alaska	1	14	0	—	2.5× / 0.4
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	14	0	—	2.5× / 0.4
Piracy · South China Sea	1	13.8	0	—	2.5× / 0.4
Exercises · Gulf of Mexico	1	13.3	0	—	1.3× / 0.8
Derelicts · North Pacific Ocean	1	12.5	0	—	0.8× / 1.2
Towing · Gulf of Mexico	1	12.1	1	12	new / 0
Cable ops · North Atlantic Ocean	1	11.9	1	11	0.3× / 3.4
Missiles · Laccadive Sea	1	10.9	0	—	0.8× / 1.2
Cable ops · Gulf of Oman	1	9.6	0	—	new / 0
Incidents · Laccadive Sea	1	7.9	0	—	0.6× / 1.6
Surveys · Bay of Bengal	1	6.5	0	—	2.5× / 0.4
Incidents · Banda Sea	1	5.9	0	—	new / 0
Missiles · Barentsz Sea	1	5.7	1	5	1.7× / 0.6
Missiles · South Atlantic Ocean	1	5.6	0	—	new / 0
Exercises · South Pacific Ocean	1	5.3	0	—	0.3× / 3.2
Missiles · Arabian Sea	1	5.2	0	—	5.0× / 0.2
Incidents · Red Sea	1	5.2	0	—	5.0× / 0.2
Cable ops · Strait of Gibraltar	1	5	0	—	5.0× / 0.2
Surveys · Southern Ocean	1	4.6	1	4	0.7× / 1.4
Cable ops · English Channel	1	4.2	0	—	5.0× / 0.2
Other · North Pacific Ocean	1	4.2	0	—	2.5× / 0.4
Exercises · Coral Sea	1	3.8	1	3	1.7× / 0.6
Exercises · Mediterranean Sea - Eastern Basin	1	3.4	0	—	0.2× / 4.2
Quakes · Alboran Sea	1	3	0	—	new / 0
Quakes · Banda Sea	1	3	0	—	2.5× / 0.4
Debris · Coral Sea	1	3	0	—	1.3× / 0.8
Quakes · Gulf of Alaska	1	3	0	—	new / 0
Debris · Gulf of Mexico	1	3	0	—	5.0× / 0.2
Quakes · Japan Sea	1	3	0	—	new / 0
Other · Laccadive Sea	1	3	0	—	new / 0
Debris · Mediterranean Sea - Eastern Basin	1	3	0	—	new / 0
Containers · Mediterranean Sea - Western Basin	1	3	0	—	new / 0
Quakes · Molukka Sea	1	3	0	—	1.7× / 0.6
Quakes · North Atlantic Ocean	1	3	0	—	1.7× / 0.6
Debris · North Sea	1	3	0	—	5.0× / 0.2
Debris · Tasman Sea	1	3	0	—	2.5× / 0.4
Nav aids · Persian Gulf	1	2.9	0	—	new / 0
Storms · South Pacific Ocean	1	2.9	0	—	new / 0
Cable ops · Eastern China Sea	1	2.5	1	2	1.3× / 0.8
Other · Mediterranean Sea - Eastern Basin	1	2.3	1	2	1.7× / 0.6
Icebergs · South Pacific Ocean	1	2.3	0	—	1.7× / 0.6
Incidents · Ionian Sea	1	2	0	—	2.5× / 0.4
Cable ops · Bristol Channel	1	1.9	0	—	1.3× / 0.8
Storms · Indian Ocean	1	1.8	0	—	new / 0
Nav aids · Mediterranean Sea - Western Basin	1	1.5	0	—	1.3× / 0.8
Containers · North Atlantic Ocean	1	1.3	1	1	0.8× / 1.2
Quakes · Southern Ocean	1	0.3	1	0	0.7× / 1.4
Surveys · Beaufort Sealong running	0	248	8	1,999	— / 0
Surveys · Arctic Oceanlong running	0	186	6	1,924	— / 0
Restricted · North Sealong running	0	186	6	1,410	0.0× / 0.4
Wrecks · Arabian Sealong running	0	176	5	853	— / 0
Surveys · Davis Strait	0	124	4	126	0.0× / 0.4
Nav aids · Arabian Sea	0	93	3	279	0.0× / 0.2
Nav aids · Malacca Strait	0	93	3	262	— / 0
Wrecks · Solomon Sea	0	93	3	327	— / 0
Wrecks · South China Sealong running	0	93	3	629	0.0× / 0.2
Wrecks · English Channel	0	69.8	2	152	0.0× / 0.6
Nav aids · Great Australian Bight	0	62	2	333	0.0× / 0.4
Surveys · Gulf of Mexico	0	62	2	132	— / 0
Wrecks · Irish Sea and St. George's Channel	0	62	2	226	0.0× / 0.4
War risk · Mediterranean Sea - Eastern Basinlong running	0	62	2	1,712	— / 0
Nav aids · North Pacific Oceanlong running	0	62	2	367	0.0× / 2
Wrecks · North Sealong running	0	62	2	901	— / 0
Nav aids · Sea of Okhotsklong running	0	62	2	1,503	0.0× / 0.2
Nav aids · Singapore Strait	0	62	2	262	0.0× / 0.2
Nav aids · South China Sea	0	62	2	148	— / 0
Surveys · The Northwestern Passageslong running	0	62	2	1,273	— / 0
Nav aids · Mediterranean Sea - Eastern Basinlong running	0	50.5	1	394	0.0× / 1.4
Wrecks · Gulf of Mexico	0	40.4	1	300	— / 0
Wrecks · Caribbean Sealong running	0	33.4	1	474	0.0× / 0.4
Other · Gulf of Mexico	0	33.4	1	33	— / 0
Other · North Atlantic Oceanlong running	0	33.4	1	811	0.0× / 1.4
Cable ops · Arafura Sea	0	31	1	35	— / 0
Cable ops · Arctic Ocean	0	31	1	173	— / 0
Cable ops · Balearic (Iberian Sea)	0	31	1	35	0.0× / 0.2
Surveys · Bering Sea	0	31	1	209	— / 0
Restricted · Black Sealong running	0	31	1	970	0.0× / 0.6
Other · Caribbean Sealong running	0	31	1	376	0.0× / 0.8
Volcanic · Caribbean Sea	0	31	1	192	— / 0
Wrecks · Celtic Sea	0	31	1	153	— / 0
Other · Chukchi Sea	0	31	1	109	— / 0
Other · Coral Sea	0	31	1	291	0.0× / 0.8
Wrecks · East Siberian Sealong running	0	31	1	467	— / 0
Volcanic · Eastern China Sea	0	31	1	247	— / 0
Wrecks · Gulf of California	0	31	1	95	— / 0
Wrecks · Gulf of Guinea	0	31	1	255	— / 0
Other · Gulf of Suez	0	31	1	223	— / 0
Cable ops · Japan Sea	0	31	1	229	— / 0
Surveys · Kara Sea	0	31	1	31	— / 0
Wrecks · Kara Sealong running	0	31	1	451	— / 0
Structures · Makassar Strait	0	31	1	110	— / 0
Wrecks · Makassar Straitlong running	0	31	1	560	— / 0
Wrecks · Malacca Strait	0	31	1	297	— / 0
Nav aids · Mozambique Channel	0	31	1	264	— / 0
Structures · North Atlantic Oceanlong running	0	31	1	894	— / 0
Wrecks · North Atlantic Oceanlong running	0	31	1	529	— / 0
Ordnance · North Sea	0	31	1	145	0.0× / 0.6
Restricted · Norwegian Sea	0	31	1	244	— / 0

Cite: seahazards.com Sea Ledger, 2016-01, 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.