Sea Ledger, December 2010

2010-12-01 to 2010-12-31 · archive

issued: 491
warning-days in force: 7,977
in force at month end: 233
sea × type cells: 194

baseline: same month, previous 5 years (2009-12, 2008-12, 2007-12, 2006-12, 2005-12)

By type

type	issued	warning-days	in force at end
Piracy	81	506.8	12
Exercises	75	792.7	21
Incidents	74	950.3	27
Cable ops	71	943.8	27
Nav aids	59	1,512.7	46
Quakes	47	139.4	5
Missiles	27	256.5	3
Derelicts	17	70	2
Surveys	9	1,519.6	49
Other	8	323.2	8
Wrecks	5	670.8	23
Spills	4	45	1
Ordnance	4	145.8	6
Debris	3	7.7	0
Icebergs	3	8.9	1
Restricted	2	50	1
Containers	2	3.1	0
Volcanic	0	31	1

By sea and type · 194 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Piracy · Indian Oceansurge	43	180.5	6	41	54× / 0.8
Cable ops · South Atlantic Oceanlong running	38	243.6	6	783	1.7× / 22.8
Piracy · Arabian Seasurge	34	253.1	3	41	34× / 1
Incidents · North Pacific Ocean	19	228.1	2	61	1.6× / 12.2
Nav aids · North Seasurge	16	292.5	9	288	2.0× / 8
Incidents · North Atlantic Ocean	14	227.9	8	33	1.6× / 9
Quakes · North Pacific Oceansurge	12	39.6	1	31	2.0× / 6
Exercises · Japan Seasurge	10	83.6	2	37	3.3× / 3
Quakes · Coral Seasurge	10	25.4	3	8	8.3× / 1.2
Nav aids · North Atlantic Oceansurgelong running	9	162.4	2	671	4.1× / 2.2
Nav aids · South Atlantic Oceansurgelong running	8	338.8	11	863	2.1× / 3.8
Cable ops · Arabian Seasurge	8	117.6	3	78	2.5× / 3.2
Missiles · North Pacific Ocean	8	77.7	2	60	1.4× / 5.8
Exercises · Philippine Seasurge	7	117.3	1	35	2.9× / 2.4
Exercises · Bay of Bengal	7	65.8	3	40	1.0× / 7
Exercises · North Atlantic Ocean	7	55.6	0	—	0.9× / 7.8
Exercises · North Pacific Ocean	7	47.3	1	35	0.9× / 8
Quakes · South Pacific Ocean	7	21	0	—	0.6× / 11.6
Exercises · Aegean Sealong running	6	106	8	366	1.9× / 3.2
Incidents · Coral Seasurge	6	2.3	0	—	3.3× / 1.8
Incidents · South China Sea	5	123.4	2	65	0.9× / 5.8
Exercises · South China Seasurge	5	116.5	2	65	3.6× / 1.4
Cable ops · Bay of Bengal	5	66.2	3	42	1.7× / 3
Nav aids · Inner Seas off the West Coast of Scotlandsurge	5	59	3	83	3.1× / 1.6
Exercises · Yellow Sea	5	46.5	1	37	1.1× / 4.4
Nav aids · Celtic Seasurge	5	34.6	1	271	2.5× / 2
Exercises · South Atlantic Ocean	5	23.2	0	—	1.0× / 5
Cable ops · Mediterranean Sea - Eastern Basin	4	102.3	3	67	0.9× / 4.2
Cable ops · North Atlantic Ocean	4	86.9	4	81	1.3× / 3.2
Exercises · Arabian Sea	4	49	2	37	1.1× / 3.8
Incidents · South Pacific Ocean	4	42.2	1	36	0.4× / 9.4
Incidents · Caribbean Seasurge	4	32.2	2	25	3.3× / 1.2
Missiles · Japan Seanew	4	23.4	0	—	new / 0
Incidents · Mozambique Channelsurge	4	17.7	3	9	4.0× / 1
Quakes · Indian Ocean	4	12	0	—	1.5× / 2.6
Incidents · Great Australian Bightsurge	4	3.6	0	—	20× / 0.2
Nav aids · South Pacific Oceansurge	3	128.2	5	351	5.0× / 0.6
Incidents · Arabian Seasurge	3	68.5	3	37	3.8× / 0.8
Incidents · Indian Ocean	3	62.2	1	58	1.0× / 3
Exercises · Laccadive Sea	3	34.3	1	35	0.5× / 6.6
Ordnance · Mediterranean Sea - Eastern Basinnew	3	28.7	2	26	new / 0
Missiles · Barentsz Seanew	3	21.6	0	—	new / 0
Exercises · South Pacific Ocean	3	19.9	0	—	1.0× / 3
Derelicts · North Atlantic Ocean	3	19.4	1	31	0.8× / 3.8
Exercises · Mediterranean Sea - Eastern Basin	3	11.1	0	—	1.5× / 2
Quakes · Banda Seasurge	3	9	0	—	2.5× / 1.2
Quakes · South Atlantic Oceansurge	3	9	0	—	3.8× / 0.8
Icebergs · Southern Ocean	3	8.9	1	14	1.1× / 2.8
Nav aids · Gulf of Alaskasurge	3	8	0	—	2.1× / 1.4
Surveys · South Atlantic Ocean	2	98	2	68	1.1× / 1.8
Cable ops · Caribbean Sea	2	46.4	1	140	3.3× / 0.6
Nav aids · Gulf of Mexico	2	34.3	2	74	2.0× / 1
Cable ops · Gulf of Guinea	2	31.2	1	80	3.3× / 0.6
Missiles · South Atlantic Oceannew	2	26.2	0	—	new / 0
Cable ops · Sea of Marmara	2	21	1	22	10× / 0.2
Missiles · Bay of Bengalnew	2	18.9	0	—	new / 0
Spills · North Atlantic Ocean	2	17	1	22	1.4× / 1.4
Missiles · North Atlantic Oceannew	2	13.1	0	—	new / 0
Quakes · Philippine Sea	2	8.1	0	—	0.7× / 2.8
Derelicts · Caribbean Sea	2	6	0	—	1.4× / 1.4
Derelicts · Indian Ocean	2	6	0	—	1.7× / 1.2
Derelicts · Great Australian Bightnew	2	5.6	1	16	new / 0
Nav aids · Coral Sea	2	5.2	1	22	0.5× / 4
Other · Inner Seas off the West Coast of Scotland	2	4.8	0	—	5.0× / 0.4
Surveys · North Sea	2	4.6	1	12	1.0× / 2
Incidents · Tasman Sea	2	4.4	1	9	2.0× / 1
Derelicts · Sea of Okhotsknew	2	3.8	0	—	new / 0
Quakes · North Atlantic Ocean	2	3.3	1	21	1.3× / 1.6
Nav aids · Arabian Sealong running	1	86.1	3	380	0.4× / 2.8
Nav aids · Bay of Bengal	1	66.4	2	136	1.3× / 0.8
Ordnance · North Sealong running	1	46.2	2	791	new / 0
Nav aids · Mediterranean Sea - Western Basin	1	45.5	2	158	0.8× / 1.2
Cable ops · Andaman or Burma Sea	1	40.5	1	52	5.0× / 0.2
Missiles · Norwegian Sea	1	40.1	0	—	new / 0
Incidents · Philippine Sea	1	33.8	1	52	0.3× / 3.4
Nav aids · Indian Ocean	1	31.1	1	44	2.5× / 0.4
Other · Andaman or Burma Sea	1	29.5	1	29	new / 0
Restricted · Persian Gulf	1	29.5	1	29	new / 0
Cable ops · Malacca Strait	1	25.7	0	—	5.0× / 0.2
Surveys · Arabian Sea	1	25.4	1	42	1.3× / 0.8
Surveys · Mozambique Channel	1	21.1	1	21	new / 0
Surveys · Philippine Sea	1	18.6	0	—	new / 0
Incidents · Bay of Bengal	1	17.9	0	—	1.0× / 1
Missiles · Arctic Ocean	1	17.7	0	—	new / 0
Derelicts · South Pacific Ocean	1	17.4	0	—	2.5× / 0.4
Wrecks · Gulf of Guinea	1	16.3	1	16	new / 0
Incidents · Tyrrhenian Sea	1	15.6	1	15	new / 0
Spills · Bering Sea	1	14	0	—	5.0× / 0.2
Spills · Caribbean Sea	1	14	0	—	2.5× / 0.4
Wrecks · South Pacific Ocean	1	13.9	1	13	new / 0
Incidents · Laccadive Sea	1	13.8	0	—	0.8× / 1.2
Cable ops · Aegean Sea	1	12.8	1	65	1.7× / 0.6
Other · North Sea	1	12.6	0	—	1.0× / 1
Cable ops · Timor Sea	1	12.1	0	—	2.5× / 0.4
Wrecks · Bay of Bengal	1	11.1	1	11	new / 0
Piracy · Gulf of Aden	1	10.9	0	—	1.7× / 0.6
Piracy · Java Sea	1	9.5	0	—	new / 0
Wrecks · English Channel	1	9.3	1	9	2.5× / 0.4
Missiles · Southern Ocean	1	8.6	0	—	new / 0
Surveys · Mediterranean Sea - Eastern Basin	1	8.5	1	8	0.7× / 1.4
Cable ops · Ceram Sea	1	7.5	1	7	5.0× / 0.2
Wrecks · Persian Gulf	1	7.5	1	7	5.0× / 0.2
Exercises · Baltic Sea	1	6.2	0	—	2.5× / 0.4
Piracy · Singapore Strait	1	5.7	1	5	2.5× / 0.4
Piracy · South China Sea	1	5.7	1	5	2.5× / 0.4
Cable ops · Irish Sea and St. George's Channel	1	5.4	0	—	5.0× / 0.2
Incidents · South Atlantic Ocean	1	5.3	1	38	0.3× / 3.4
Nav aids · English Channel	1	5	0	—	0.5× / 2
Missiles · Indian Ocean	1	4.9	0	—	new / 0
Restricted · North Atlantic Ocean	1	4.8	0	—	2.5× / 0.4
Exercises · Indian Ocean	1	4.7	0	—	5.0× / 0.2
Nav aids · North Pacific Ocean	1	4.4	1	4	0.4× / 2.4
Exercises · Coral Sea	1	3.6	0	—	5.0× / 0.2
Derelicts · Arabian Sea	1	3	0	—	5.0× / 0.2
Quakes · Bering Sea	1	3	0	—	5.0× / 0.2
Other · Caribbean Sea	1	3	0	—	5.0× / 0.2
Derelicts · Coral Sea	1	3	0	—	5.0× / 0.2
Other · Coral Sea	1	3	0	—	new / 0
Quakes · Flores Sea	1	3	0	—	5.0× / 0.2
Derelicts · Gulf of Mexico	1	3	0	—	new / 0
Debris · Indian Ocean	1	3	0	—	5.0× / 0.2
Missiles · Laccadive Sea	1	3	0	—	new / 0
Containers · North Atlantic Ocean	1	3	0	—	0.7× / 1.4
Debris · North Atlantic Ocean	1	3	0	—	1.7× / 0.6
Incidents · North Sea	1	3	0	—	1.7× / 0.6
Quakes · Solomon Sea	1	3	0	—	0.7× / 1.4
Quakes · Southern Ocean	1	3	0	—	1.7× / 0.6
Derelicts · Bay of Bengal	1	2	0	—	5.0× / 0.2
Debris · South Atlantic Ocean	1	1.7	0	—	1.3× / 0.8
Missiles · Aegean Sea	1	1.3	1	1	new / 0
Derelicts · Bay of Biscay	1	0.8	0	—	1.7× / 0.6
Surveys · South Pacific Ocean	1	0.4	0	—	new / 0
Containers · Caribbean Sea	1	0.1	0	—	5.0× / 0.2
Other · Indian Ocean	1	0.1	0	—	2.5× / 0.4
Other · Tasman Sea	1	0	0	—	new / 0
Surveys · Arctic Oceanlong running	0	682	22	2,549	— / 0
Surveys · Beaufort Sealong running	0	341	11	2,549	— / 0
Wrecks · South China Sealong running	0	155	5	1,255	0.0× / 0.2
Wrecks · The Northwestern Passages	0	124	4	182	— / 0
Surveys · Laptev Sealong running	0	93	3	1,683	— / 0
Wrecks · North Sea	0	75.9	2	224	0.0× / 0.8
Wrecks · Arabian Sealong running	0	62	2	380	0.0× / 0.4
Surveys · Baffin Bay	0	62	2	182	— / 0
Surveys · Chukchi Sealong running	0	62	2	2,082	— / 0
Ordnance · English Channel	0	62	2	290	— / 0
Other · Persian Gulf	0	62	2	136	0.0× / 0.2
Wrecks · North Atlantic Oceanlong running	0	48.4	1	534	— / 0
Nav aids · Malacca Strait	0	48	0	—	— / 0
Cable ops · Black Sea	0	32.6	0	—	0.0× / 0.6
Other · Arctic Ocean	0	31	1	180	— / 0
Surveys · Bering Sea	0	31	1	139	— / 0
Surveys · Greenland Sealong running	0	31	1	2,865	— / 0
Cable ops · Gulf of Mexico	0	31	1	48	0.0× / 0.6
Nav aids · Gulf of Suez	0	31	1	241	0.0× / 0.6
Other · Gulf of Suez	0	31	1	136	— / 0
Wrecks · Indian Ocean	0	31	1	101	— / 0
Wrecks · Laccadive Sea	0	31	1	136	— / 0
Nav aids · Mediterranean Sea - Eastern Basin	0	31	1	73	0.0× / 1
Other · Mediterranean Sea - Eastern Basin	0	31	1	353	0.0× / 1.2
Wrecks · Mediterranean Sea - Eastern Basin	0	31	1	158	— / 0
Incidents · Mediterranean Sea - Western Basin	0	31	1	33	— / 0
Nav aids · Persian Gulf	0	31	1	34	0.0× / 0.4
Piracy · Persian Gulflong running	0	31	1	1,087	— / 0
Volcanic · Philippine Sea	0	31	1	308	0.0× / 0.8
Cable ops · Red Sea	0	31	1	35	— / 0
Wrecks · South Atlantic Ocean	0	31	1	233	— / 0
Other · South China Sealong running	0	31	1	898	— / 0
Other · The Northwestern Passages	0	31	1	153	— / 0
Surveys · The Northwestern Passageslong running	0	31	1	847	— / 0
Other · Sea of Azov	0	30.9	0	—	— / 0
Cable ops · Makassar Strait	0	30	0	—	0.0× / 0.2
Nav aids · Mozambique Channel	0	23.4	0	—	— / 0
Wrecks · North Pacific Ocean	0	23.4	0	—	— / 0
Nav aids · Rio de La Plata	0	23.4	0	—	— / 0
Incidents · Bay of Biscay	0	17.4	0	—	0.0× / 1.4
Restricted · Strait of Gibraltar	0	15.7	0	—	— / 0
Other · Gulf of Mexico	0	12.1	0	—	— / 0
Nav aids · Irish Sea and St. George's Channel	0	10.4	0	—	0.0× / 3.6
Nav aids · Philippine Sea	0	10.4	0	—	0.0× / 0.4
Piracy · Red Sea	0	10.4	0	—	— / 0
Ordnance · Mediterranean Sea - Western Basin	0	8.9	0	—	— / 0
Other · North Atlantic Ocean	0	5.6	0	—	0.0× / 0.4
Surveys · Gulf of Mexico	0	4	0	—	0.0× / 0.2
Surveys · North Pacific Ocean	0	4	0	—	— / 0
Other · Arabian Sea	0	2.6	0	—	0.0× / 0.8
Nav aids · Laccadive Sea	0	2.6	0	—	0.0× / 1
Exercises · Bering Sea	0	2.1	0	—	0.0× / 0.2
Other · Japan Sea	0	2	0	—	— / 0
Surveys · Red Sea	0	2	0	—	— / 0
Surveys · Bay of Bengal	0	0	0	—	0.0× / 0.6
Ordnance · Gulf of Aden	0	0	0	—	— / 0
Cable ops · Halmahera Sea	0	0	0	—	— / 0
Surveys · Sea of Okhotsk	0	0	0	—	— / 0
Cable ops · South China Sea	0	0	0	—	0.0× / 0.8

Cite: seahazards.com Sea Ledger, 2010-12, 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.