Sea Ledger, January 2012

2012-01-01 to 2012-01-31 · archive

issued: 397
warning-days in force: 6,579
in force at month end: 222
sea × type cells: 201

baseline: same month, previous 5 years (2011-01, 2010-01, 2009-01, 2008-01, 2007-01)

By type

type	issued	warning-days	in force at end
Incidents	98	808.5	36
Nav aids	71	1,380.1	44
Cable ops	64	1,092.6	34
Exercises	40	525.5	17
Quakes	31	91.5	1
Derelicts	24	116.8	4
Surveys	15	903.3	33
Piracy	11	137.1	1
Other	10	296.2	9
Missiles	8	89.6	3
Spills	7	95.3	6
Containers	5	18.7	0
Icebergs	4	10.3	1
Debris	4	12	0
Wrecks	2	587.7	19
Restricted	1	132.2	4
Volcanic	1	55.3	2
Ordnance	1	102.6	4
Structures	0	31	1
Mines	0	31	1
War risk	0	62	2

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Oceanlong running	32	288.2	13	1,179	1.4× / 22.4
Incidents · North Pacific Ocean	21	99.5	5	33	1.7× / 12.6
Nav aids · North Sea	19	296.5	11	75	1.8× / 10.6
Incidents · North Atlantic Oceansurge	19	137.5	4	51	2.3× / 8.4
Incidents · South Atlantic Oceansurge	13	106.9	7	107	4.6× / 2.8
Incidents · South China Sea	11	184.5	5	44	1.8× / 6
Quakes · South Pacific Ocean	9	27.8	1	31	0.8× / 11
Cable ops · North Atlantic Oceansurge	8	190.5	4	90	2.4× / 3.4
Nav aids · Inner Seas off the West Coast of Scotlandsurge	8	69.3	1	91	2.0× / 4
Cable ops · Persian Gulfsurge	8	68.9	2	307	5.0× / 1.6
Exercises · Bay of Bengal	7	87.3	2	35	1.0× / 7.2
Exercises · North Pacific Ocean	7	79	3	35	0.8× / 8.2
Incidents · South Pacific Ocean	7	77.5	4	35	0.7× / 10.6
Nav aids · North Atlantic Oceansurgelong running	6	95.1	3	609	2.1× / 2.8
Piracy · Arabian Sea	6	65.3	1	35	0.7× / 9
Nav aids · South Atlantic Oceanlong running	5	266.4	8	1,259	0.7× / 7.6
Spills · Gulf of Mexico	5	53	3	26	1.0× / 5.2
Nav aids · Mediterranean Sea - Eastern Basinnewlong running	5	49.2	2	469	new / 0
Exercises · Arabian Sea	5	45.8	2	32	1.0× / 5.2
Incidents · Caribbean Seasurge	5	16.5	4	6	5.0× / 1
Derelicts · Indian Oceansurge	5	15	0	—	3.6× / 1.4
Nav aids · Celtic Sea	4	65.9	3	119	1.3× / 3
Nav aids · Gulf of Mexico	4	38.1	1	84	1.8× / 2.2
Exercises · Yellow Sea	4	36.7	1	34	0.9× / 4.4
Exercises · South Atlantic Ocean	4	23.5	0	—	0.7× / 6
Cable ops · Tasman Seasurge	4	18.3	0	—	3.3× / 1.2
Incidents · Coral Sea	4	15.8	0	—	1.5× / 2.6
Quakes · Southern Oceansurge	4	12	0	—	6.7× / 0.6
Nav aids · Coral Seasurge	4	5.7	0	—	3.3× / 1.2
Surveys · South Atlantic Ocean	3	72.7	4	101	1.7× / 1.8
Nav aids · Bay of Bengalnew	3	41.7	1	27	new / 0
Exercises · Laccadive Sea	3	34.6	1	29	0.5× / 6
Derelicts · South Pacific Oceansurge	3	30.2	0	—	5.0× / 0.6
Incidents · Bismarck Seasurge	3	11.5	1	14	3.8× / 0.8
Surveys · Tasman Seasurge	3	10.5	0	—	15× / 0.2
Incidents · Tasman Sea	3	9.5	0	—	1.5× / 2
Quakes · North Pacific Ocean	3	9	0	—	0.5× / 5.8
Quakes · South Atlantic Ocean	3	9	0	—	1.7× / 1.8
Icebergs · Southern Ocean	3	7.3	1	12	1.4× / 2.2
Quakes · Indian Ocean	3	6.7	0	—	0.8× / 3.6
Derelicts · Coral Seasurge	3	3.8	1	14	7.5× / 0.4
Nav aids · Indian Ocean	3	0.4	0	—	1.1× / 2.6
Exercises · South China Sea	2	69.4	2	34	5.0× / 0.4
Missiles · North Pacific Ocean	2	34.2	1	61	0.3× / 5.8
Nav aids · English Channel	2	33	1	41	0.6× / 3.6
Other · North Atlantic Ocean	2	23.4	0	—	10× / 0.2
Nav aids · The Coastal Waters of Southeast Alaska and British Columbia	2	21.4	1	31	1.3× / 1.6
Piracy · Gulf of Aden	2	20.3	0	—	1.1× / 1.8
Incidents · Arabian Sea	2	19.7	0	—	0.8× / 2.4
Cable ops · North Sea	2	18.1	0	—	10× / 0.2
Other · North Sea	2	18.1	1	27	2.0× / 1
Nav aids · Irish Sea and St. George's Channel	2	11	0	—	0.7× / 3
Incidents · Philippine Sea	2	10.9	1	12	0.3× / 6
Quakes · Coral Sea	2	6	0	—	0.6× / 3.2
Containers · North Pacific Ocean	2	6	0	—	2.5× / 0.8
Quakes · Philippine Sea	2	6	0	—	1.3× / 1.6
Surveys · North Atlantic Ocean	2	4.3	1	3	2.0× / 1
Derelicts · Mediterranean Sea - Eastern Basin	2	3.7	0	—	5.0× / 0.4
Other · South Atlantic Ocean	2	2.2	0	—	2.0× / 1
Derelicts · South Atlantic Ocean	2	1.4	0	—	1.7× / 1.2
Exercises · Aegean Sea	1	97.2	3	151	0.3× / 4
Nav aids · North Pacific Ocean	1	93.2	3	261	0.2× / 5
Cable ops · South Pacific Ocean	1	67.4	2	252	1.3× / 0.8
Cable ops · Bay of Bengal	1	60.5	2	34	0.4× / 2.4
Cable ops · Gulf of Guinea	1	41.2	1	47	0.8× / 1.2
Cable ops · Mediterranean Sea - Eastern Basin	1	38	1	55	0.4× / 2.8
Surveys · Greenland Sea	1	29.9	1	90	new / 0
Derelicts · Gulf of Oman	1	29.6	1	29	new / 0
Surveys · Mozambique Channel	1	28.6	1	28	new / 0
Surveys · Gulf of Suez	1	27.6	1	27	2.5× / 0.4
Other · Inner Seas off the West Coast of Scotland	1	26.8	1	26	1.0× / 1
Incidents · Mozambique Channel	1	25	1	25	new / 0
Volcanic · Red Sea	1	24.3	1	24	new / 0
Cable ops · Indian Ocean	1	21.8	1	21	0.7× / 1.4
Cable ops · Celtic Sea	1	19	0	—	2.5× / 0.4
Surveys · Black Sea	1	18.5	1	18	new / 0
Incidents · Tyrrhenian Sea	1	16.7	1	16	5.0× / 0.2
Incidents · Bay of Bengal	1	14.3	0	—	0.7× / 1.4
Piracy · South China Sea	1	13.8	0	—	2.5× / 0.4
Incidents · Indian Ocean	1	13.5	0	—	0.2× / 4.8
Other · South Pacific Ocean	1	12.3	0	—	5.0× / 0.2
Surveys · Inner Seas off the West Coast of Scotland	1	10.8	1	10	new / 0
Ordnance · Philippine Sea	1	9.6	1	9	5.0× / 0.2
Cable ops · Eastern China Sea	1	9.5	1	9	5.0× / 0.2
Piracy · Indian Ocean	1	9.3	0	—	0.2× / 6.2
Derelicts · Gulf of Mexico	1	9	1	8	5.0× / 0.2
Piracy · Gulf of Oman	1	7.8	0	—	5.0× / 0.2
Incidents · Laccadive Sea	1	7.8	1	7	1.3× / 0.8
Wrecks · Mediterranean Sea - Eastern Basin	1	7.7	1	7	new / 0
Exercises · Baltic Sea	1	7.2	0	—	1.3× / 0.8
Derelicts · Tyrrhenian Sea	1	7.2	0	—	new / 0
Exercises · Red Sea	1	6.7	0	—	5.0× / 0.2
Missiles · Laccadive Sea	1	6.4	0	—	2.5× / 0.4
Other · Tasman Sea	1	5.6	0	—	1.3× / 0.8
Containers · South Pacific Ocean	1	5.3	0	—	new / 0
Missiles · North Atlantic Ocean	1	5.2	0	—	new / 0
Missiles · South Pacific Ocean	1	4.9	0	—	1.0× / 1
Incidents · Gulf of Thailand	1	4.8	0	—	new / 0
Cable ops · Andaman or Burma Sea	1	4.4	1	4	5.0× / 0.2
Other · English Channel	1	4.4	1	4	1.7× / 0.6
Spills · Arabian Sea	1	4.3	1	4	5.0× / 0.2
Cable ops · Sea of Marmara	1	4.3	1	4	5.0× / 0.2
Spills · Gulf of Alaska	1	4	1	45	1.7× / 0.6
Incidents · Southern Ocean	1	3.6	0	—	0.8× / 1.2
Exercises · Bering Sea	1	3.3	0	—	new / 0
Surveys · Mediterranean Sea - Eastern Basin	1	3.2	1	67	0.3× / 3.6
Missiles · Black Sea	1	3.1	1	3	new / 0
Missiles · Mediterranean Sea - Eastern Basin	1	3.1	0	—	new / 0
Quakes · Caribbean Sea	1	3	0	—	0.6× / 1.8
Quakes · Flores Sea	1	3	0	—	new / 0
Derelicts · Ionian Sea	1	3	0	—	2.5× / 0.4
Derelicts · Laccadive Sea	1	3	0	—	new / 0
Quakes · Molukka Sea	1	3	0	—	0.3× / 3.4
Containers · Mozambique Channel	1	3	0	—	new / 0
Debris · North Atlantic Ocean	1	3	0	—	1.0× / 1
Derelicts · North Atlantic Ocean	1	3	0	—	1.7× / 0.6
Derelicts · North Pacific Ocean	1	3	0	—	1.7× / 0.6
Debris · North Sea	1	3	0	—	new / 0
Containers · South Atlantic Ocean	1	3	0	—	new / 0
Debris · South China Sea	1	3	0	—	new / 0
Quakes · South China Sea	1	3	0	—	new / 0
Icebergs · South Pacific Ocean	1	3	0	—	new / 0
Quakes · Tasman Sea	1	3	0	—	2.5× / 0.4
Debris · Timor Sea	1	3	0	—	5.0× / 0.2
Cable ops · Aegean Sea	1	2.4	0	—	1.7× / 0.6
Exercises · Black Sea	1	2.1	0	—	5.0× / 0.2
Incidents · Japan Sea	1	2	1	1	2.5× / 0.4
Missiles · Philippine Sea	1	1.7	0	—	5.0× / 0.2
Derelicts · Mediterranean Sea - Western Basin	1	1.5	0	—	2.5× / 0.4
Restricted · North Atlantic Ocean	1	1.1	0	—	1.3× / 0.8
Exercises · North Atlantic Ocean	1	1	1	0	0.4× / 2.4
Derelicts · Bay of Biscay	1	0.9	1	0	5.0× / 0.2
Wrecks · Coral Sea	1	0.8	0	—	new / 0
Nav aids · Bass Strait	1	0.6	0	—	1.7× / 0.6
Exercises · South Pacific Ocean	1	0.4	1	0	0.5× / 2.2
Exercises · Sulu Sea	1	0.3	0	—	new / 0
Nav aids · Gulf of Alaska	1	0.2	0	—	0.5× / 2.2
Surveys · South Pacific Ocean	1	0.1	0	—	new / 0
Nav aids · Great Australian Bight	1	0	0	—	2.5× / 0.4
Surveys · Arctic Oceanlong running	0	279	9	578	0.0× / 0.2
Surveys · Beaufort Sealong running	0	124	4	538	— / 0
Wrecks · The Northwestern Passageslong running	0	124	4	513	— / 0
Wrecks · Arabian Sea	0	93	3	245	— / 0
Ordnance · North Sealong running	0	93	3	1,187	0.0× / 0.6
Wrecks · South Pacific Ocean	0	83.2	2	333	— / 0
Cable ops · Gulf of Mexico	0	63	2	140	0.0× / 0.8
Nav aids · Arabian Sealong running	0	62	2	543	0.0× / 0.6
Surveys · Baffin Baylong running	0	62	2	578	— / 0
War risk · Mediterranean Sea - Eastern Basin	0	62	2	251	0.0× / 0.2
Nav aids · Mediterranean Sea - Western Basin	0	62	2	165	0.0× / 0.2
Wrecks · North Atlantic Ocean	0	62	2	165	— / 0
Other · North Pacific Ocean	0	62	2	239	0.0× / 0.4
Restricted · North Sea	0	62	2	162	0.0× / 0.2
Nav aids · South China Sea	0	62	2	169	0.0× / 0.2
Surveys · The Northwestern Passages	0	62	2	171	— / 0
Other · Bay of Bengal	0	46	1	88	0.0× / 0.2
Cable ops · South China Sea	0	35	0	—	0.0× / 1.2
Cable ops · Adriatic Sea	0	31	1	31	— / 0
Missiles · Aegean Sealong running	0	31	1	397	— / 0
Cable ops · Arabian Sea	0	31	1	99	0.0× / 3.4
Surveys · Bering Sealong running	0	31	1	535	— / 0
Surveys · Chukchi Sea	0	31	1	53	— / 0
Surveys · Davis Strait	0	31	1	256	0.0× / 0.4
Exercises · Ionian Sea	0	31	1	31	0.0× / 0.4
Wrecks · Irish Sea and St. George's Channel	0	31	1	64	0.0× / 0.2
Nav aids · Kara Sea	0	31	1	146	— / 0
Mines · Kara Sea	0	31	1	32	— / 0
Surveys · Laccadive Sea	0	31	1	37	— / 0
Other · Mediterranean Sea - Eastern Basin	0	31	1	131	0.0× / 1.2
Volcanic · North Atlantic Ocean	0	31	1	84	— / 0
Structures · North Sea	0	31	1	169	— / 0
Wrecks · North Sea	0	31	1	120	0.0× / 1.2
Other · Persian Gulf	0	31	1	142	0.0× / 0.2
Restricted · Persian Gulflong running	0	31	1	425	— / 0
Surveys · Persian Gulf	0	31	1	265	— / 0
Wrecks · Persian Gulflong running	0	31	1	403	0.0× / 0.4
Nav aids · Red Sealong running	0	31	1	379	0.0× / 0.2
Nav aids · Sea of Okhotsk	0	31	1	42	0.0× / 0.2
Restricted · Sea of Okhotsk	0	31	1	110	— / 0
Incidents · Sea of Okhotsk	0	31	1	44	0.0× / 0.4
Wrecks · Sea of Okhotsk	0	31	1	49	— / 0
Spills · South Atlantic Ocean	0	31	1	81	— / 0
Wrecks · South Atlantic Oceanlong running	0	31	1	629	— / 0
Wrecks · South China Sealong running	0	31	1	442	0.0× / 0.6
Cable ops · Sulu Sea	0	31	1	50	— / 0
Other · The Northwestern Passageslong running	0	31	1	549	— / 0
Wrecks · Yellow Sea	0	31	1	43	— / 0
Cable ops · Caribbean Sea	0	27.5	0	—	0.0× / 1
Surveys · Indian Ocean	0	15.1	0	—	0.0× / 1
Cable ops · Irish Sea and St. George's Channel	0	15.1	0	—	0.0× / 0.6
Nav aids · Laccadive Sea	0	13.4	0	—	0.0× / 0.4
Piracy · Celebes Sea	0	13	0	—	— / 0
Restricted · Inner Seas off the West Coast of Scotland	0	7.1	0	—	— / 0
Piracy · Singapore Strait	0	6.6	0	—	— / 0
Cable ops · Laccadive Sea	0	6.5	0	—	0.0× / 1
Spills · Bering Sea	0	3	0	—	0.0× / 0.2
Derelicts · South China Sea	0	2.5	0	—	0.0× / 1
Other · Coral Sea	0	2.4	0	—	0.0× / 1
Containers · South China Sea	0	1.4	0	—	— / 0
Piracy · Malacca Strait	0	1	0	—	0.0× / 0.4

Cite: seahazards.com Sea Ledger, 2012-01, 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.