Sea Ledger, October 2010

2010-10-01 to 2010-10-31 · archive

issued: 443
warning-days in force: 8,051
in force at month end: 283
sea × type cells: 195

baseline: same month, previous 5 years (2009-10, 2008-10, 2007-10, 2006-10, 2005-10)

By type

type	issued	warning-days	in force at end
Exercises	81	807	26
Incidents	79	790.8	33
Nav aids	61	1,436	51
Cable ops	47	1,158.7	37
Piracy	44	492.1	28
Quakes	36	115.7	2
Missiles	26	189.3	5
Derelicts	22	62.1	5
Surveys	12	1,673.8	51
Other	9	323.3	13
Spills	7	95	4
Debris	6	18	0
Ordnance	5	203.7	7
Wrecks	4	537.1	18
Restricted	1	39.9	1
Icebergs	1	3	0
Towing	1	26.7	1
Containers	1	3	0
Structures	0	44.8	0
Volcanic	0	31	1

By sea and type · 195 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Piracy · Indian Oceansurge	24	252.1	16	41	30× / 0.8
Incidents · North Pacific Oceansurge	20	111.7	7	53	2.5× / 8
Cable ops · South Atlantic Oceanlong running	16	259.2	7	722	0.9× / 17
Nav aids · North Sea	15	157.9	6	227	2.0× / 7.6
Incidents · North Atlantic Oceansurge	12	237.5	9	73	3.8× / 3.2
Exercises · South China Seasurge	11	95.2	3	39	5.5× / 2
Quakes · South Pacific Ocean	11	35.5	1	31	1.0× / 10.6
Piracy · Arabian Seanew	10	126.9	6	37	new / 0
Missiles · North Pacific Ocean	9	83.9	2	56	1.6× / 5.6
Exercises · Japan Sea	8	76.5	2	39	1.8× / 4.4
Exercises · Arabian Seasurge	8	64.8	3	35	3.3× / 2.4
Incidents · South Pacific Ocean	8	57.1	2	29	0.7× / 12.2
Exercises · South Atlantic Ocean	8	48.2	1	29	0.8× / 10.4
Nav aids · Inner Seas off the West Coast of Scotlandsurge	7	35.3	2	30	3.9× / 1.8
Cable ops · North Atlantic Oceansurge	6	95.9	3	85	2.3× / 2.6
Exercises · Yellow Sea	6	52.1	1	39	1.3× / 4.8
Piracy · Gulf of Adensurge	6	50.8	3	32	7.5× / 0.8
Exercises · Laccadive Sea	6	45.8	1	27	0.9× / 6.6
Exercises · Bay of Bengal	6	39.3	1	29	0.8× / 7.4
Incidents · South China Seasurge	6	19.3	4	15	2.1× / 2.8
Quakes · North Pacific Ocean	6	18	0	—	1.0× / 6
Nav aids · South Atlantic Oceanlong running	5	244	9	802	1.0× / 5
Nav aids · North Atlantic Oceanlong running	5	196.1	7	610	1.6× / 3.2
Exercises · North Pacific Ocean	5	58.4	3	35	0.6× / 8.8
Nav aids · Gulf of Mexico	5	50.4	2	41	1.3× / 4
Exercises · North Atlantic Ocean	5	50.3	3	45	1.0× / 5.2
Quakes · Indian Ocean	5	15	0	—	1.1× / 4.4
Derelicts · Indian Oceansurge	5	12.9	0	—	8.3× / 0.6
Nav aids · Coral Seasurge	5	7	1	13	5.0× / 1
Incidents · Coral Seasurge	5	3.2	0	—	2.1× / 2.4
Cable ops · Mediterranean Sea - Eastern Basin	4	141.8	4	102	1.5× / 2.6
Incidents · South Atlantic Ocean	4	56.4	2	51	0.9× / 4.4
Nav aids · English Channel	4	53.1	1	108	1.5× / 2.6
Piracy · South China Seasurge	4	31.3	2	30	5.0× / 0.8
Missiles · Barentsz Seanew	4	25.1	1	35	new / 0
Quakes · Gulf of Californianew	4	12	0	—	new / 0
Cable ops · South China Sea	3	190.6	6	55	0.9× / 3.4
Surveys · South Atlantic Ocean	3	80.3	1	65	0.8× / 4
Nav aids · Mediterranean Sea - Western Basinsurge	3	54.8	1	97	15× / 0.2
Cable ops · Arabian Sea	3	51.3	3	23	1.7× / 1.8
Exercises · Gulf of Mexicosurge	3	46.1	0	—	3.8× / 0.8
Missiles · Kara Seanew	3	21.6	0	—	new / 0
Incidents · Bay of Bengalsurge	3	20.3	0	—	3.0× / 1
Exercises · Baltic Seasurge	3	16.2	1	30	2.5× / 1.2
Exercises · South Pacific Ocean	3	13.3	2	36	0.8× / 3.8
Debris · North Atlantic Oceansurge	3	9	0	—	15× / 0.2
Derelicts · Celtic Seanew	3	6.7	1	23	new / 0
Derelicts · North Atlantic Oceansurge	3	6.7	1	31	5.0× / 0.6
Quakes · Solomon Sea	3	6.3	1	10	1.9× / 1.6
Nav aids · Gulf of Alaska	3	5.4	2	33	1.4× / 2.2
Nav aids · The Coastal Waters of Southeast Alaska and British Columbiasurge	3	4.1	0	—	2.1× / 1.4
Incidents · Celtic Seasurge	3	2.7	1	20	15× / 0.2
Cable ops · Gulf of Guinea	2	113.3	3	154	3.3× / 0.6
Exercises · Aegean Sea	2	101	3	305	1.0× / 2
Wrecks · South China Sealong running	2	84.2	4	1,194	5.0× / 0.4
Exercises · Philippine Sea	2	66	2	35	0.8× / 2.4
Nav aids · Irish Sea and St. George's Channellong running	2	55.2	2	377	0.8× / 2.6
Cable ops · Makassar Straitnew	2	34.4	2	41	new / 0
Spills · Caribbean Sea	2	34	0	—	2.0× / 1
Spills · Gulf of Mexico	2	34	2	33	0.3× / 6.6
Surveys · Arabian Sea	2	31.8	2	35	10× / 0.2
Incidents · Mediterranean Sea - Eastern Basin	2	22.7	1	22	1.4× / 1.4
Other · Gulf of Mexico	2	22.1	1	25	10× / 0.2
Derelicts · North Pacific Ocean	2	14.7	1	38	1.4× / 1.4
Missiles · Japan Seanew	2	13.7	1	21	new / 0
Spills · North Pacific Ocean	2	13	2	10	2.0× / 1
Cable ops · Aegean Sea	2	12.4	1	12	10× / 0.2
Derelicts · Arabian Sea	2	6	0	—	10× / 0.2
Quakes · Banda Sea	2	6	0	—	1.7× / 1.2
Quakes · Molukka Sea	2	6	0	—	3.3× / 0.6
Quakes · Philippine Sea	2	6	0	—	0.8× / 2.6
Derelicts · South China Sea	2	6	0	—	2.5× / 0.8
Missiles · Laccadive Seanew	2	5.6	0	—	new / 0
Cable ops · Celtic Sea	2	4.4	0	—	1.0× / 2
Other · Celtic Seanew	2	3.8	2	2	new / 0
Incidents · Indian Ocean	2	1.8	0	—	0.6× / 3.2
Derelicts · South Pacific Ocean	2	0.8	0	—	5.0× / 0.4
Incidents · Philippine Sea	2	0.6	0	—	0.3× / 5.8
Incidents · Tasman Sea	2	0.1	0	—	0.8× / 2.4
Surveys · Arctic Oceanlong running	1	658	22	2,488	0.6× / 1.8
Surveys · Beaufort Sealong running	1	317	11	2,488	0.3× / 3.8
Nav aids · South Pacific Ocean	1	100.5	3	290	0.6× / 1.6
Surveys · North Sea	1	73.9	2	242	1.3× / 0.8
Ordnance · English Channel	1	57.5	2	229	5.0× / 0.2
Cable ops · North Sea	1	47.8	1	96	0.6× / 1.6
Wrecks · South Atlantic Ocean	1	45.2	1	172	5.0× / 0.2
Incidents · Mozambique Channel	1	42	0	—	1.3× / 0.8
Incidents · Tyrrhenian Sea	1	40	1	45	2.5× / 0.4
Ordnance · Gulf of Aden	1	34.6	2	63	new / 0
Ordnance · Persian Gulf	1	34.4	1	33	new / 0
Incidents · Caribbean Sea	1	32.9	1	42	1.7× / 0.6
Nav aids · Laccadive Sea	1	31	1	38	new / 0
Cable ops · Sea of Okhotsk	1	31	1	56	2.5× / 0.4
Surveys · Japan Sea	1	29.3	1	29	2.5× / 0.4
Surveys · Sea of Okhotsk	1	25.6	1	101	1.7× / 0.6
Surveys · Bay of Bengal	1	23.5	1	23	1.3× / 0.8
Other · Tyrrhenian Sea	1	21.1	1	21	new / 0
Cable ops · Gulf of Oman	1	20.4	1	20	new / 0
Cable ops · Yellow Sea	1	16.7	1	16	new / 0
Cable ops · Halmahera Sea	1	16.4	1	16	new / 0
Incidents · Ionian Sea	1	16.1	0	—	2.5× / 0.4
Missiles · South Atlantic Ocean	1	15.6	0	—	new / 0
Exercises · Gulf of California	1	15.5	0	—	5.0× / 0.2
Spills · North Atlantic Ocean	1	14	0	—	0.5× / 2.2
Nav aids · Mediterranean Sea - Eastern Basin	1	12.4	1	12	2.5× / 0.4
Incidents · Bay of Biscay	1	12.2	0	—	5.0× / 0.2
Other · Sea of Azov	1	11.1	1	11	new / 0
Cable ops · Gulf of Thailand	1	10.4	0	—	2.5× / 0.4
Other · Andaman or Burma Sea	1	9.3	1	9	5.0× / 0.2
Ordnance · Arabian Sea	1	9.3	0	—	new / 0
Restricted · North Atlantic Ocean	1	8.9	0	—	0.5× / 2
Quakes · Arafura Sea	1	8.5	0	—	new / 0
Other · North Atlantic Ocean	1	8.4	1	8	1.3× / 0.8
Missiles · Sea of Okhotsk	1	7.9	0	—	new / 0
Other · Black Sea	1	7.7	0	—	new / 0
Exercises · Bering Sea	1	7.3	0	—	1.7× / 0.6
Exercises · Mediterranean Sea - Eastern Basin	1	7.3	0	—	1.3× / 0.8
Missiles · North Atlantic Ocean	1	6.6	0	—	new / 0
Ordnance · North Pacific Ocean	1	5.9	0	—	new / 0
Surveys · Philippine Sea	1	4.8	0	—	1.3× / 0.8
Wrecks · Coral Sea	1	4.7	0	—	new / 0
Towing · Sea of Okhotsk	1	4.3	1	4	5.0× / 0.2
Cable ops · Indian Ocean	1	3.5	1	3	1.3× / 0.8
Derelicts · Bay of Bengal	1	3.4	1	3	1.7× / 0.6
Debris · Arafura Sea	1	3	0	—	new / 0
Derelicts · Caribbean Sea	1	3	0	—	5.0× / 0.2
Incidents · Gulf of Mexico	1	3	0	—	1.7× / 0.6
Debris · Indian Ocean	1	3	0	—	new / 0
Containers · North Pacific Ocean	1	3	0	—	2.5× / 0.4
Icebergs · South Atlantic Ocean	1	3	0	—	0.2× / 6.2
Debris · South China Sea	1	3	0	—	new / 0
Missiles · White Sea	1	3	0	—	new / 0
Missiles · Arctic Ocean	1	2.9	0	—	new / 0
Missiles · South Pacific Ocean	1	2.7	1	2	new / 0
Exercises · Indian Ocean	1	2.2	0	—	0.8× / 1.2
Derelicts · Red Sea	1	1.9	1	1	new / 0
Exercises · Coral Sea	1	1.5	0	—	new / 0
Nav aids · Bass Strait	1	1.3	0	—	1.7× / 0.6
Incidents · Timor Sea	1	1	1	1	1.0× / 1
Incidents · Baffin Bay	1	0.8	1	0	new / 0
Incidents · Southern Ocean	1	0.7	0	—	new / 0
Incidents · Gulf of Aden	1	0.5	1	0	new / 0
Wrecks · The Northwestern Passages	0	124	4	121	— / 0
Surveys · The Northwestern Passageslong running	0	99.6	1	786	0.0× / 0.4
Nav aids · Arabian Sea	0	98.5	3	319	0.0× / 0.2
Nav aids · Bay of Bengal	0	93	3	75	0.0× / 0.2
Surveys · Laptev Sealong running	0	93	3	1,622	0.0× / 0.2
Incidents · Adriatic Sea	0	62	2	45	— / 0
Wrecks · Arabian Sea	0	62	2	319	— / 0
Surveys · Baffin Bay	0	62	2	121	— / 0
Surveys · Chukchi Sealong running	0	62	2	2,021	— / 0
Nav aids · Malacca Strait	0	62	2	222	0.0× / 0.2
Wrecks · North Atlantic Oceanlong running	0	62	2	473	0.0× / 0.2
Wrecks · North Sea	0	62	2	163	0.0× / 0.2
Other · Mediterranean Sea - Eastern Basin	0	61	1	292	0.0× / 0.6
Nav aids · Gulf of Suezlong running	0	45.3	1	667	0.0× / 0.6
Structures · North Sea	0	44.8	0	—	— / 0
Other · Persian Gulf	0	32.4	1	78	0.0× / 0.4
Other · Arctic Ocean	0	31	1	119	— / 0
Cable ops · Barentsz Sea	0	31	1	41	— / 0
Surveys · Bering Sea	0	31	1	78	0.0× / 0.2
Nav aids · Bristol Channel	0	31	1	32	0.0× / 0.6
Cable ops · Caribbean Sea	0	31	1	79	0.0× / 1
Nav aids · Celtic Sea	0	31	1	210	0.0× / 1.8
Surveys · Greenland Sealong running	0	31	1	2,804	— / 0
Restricted · Gulf of Mexico	0	31	1	58	— / 0
Other · Gulf of Suez	0	31	1	75	— / 0
Wrecks · Indian Ocean	0	31	1	40	— / 0
Ordnance · Ionian Sea	0	31	1	63	— / 0
Wrecks · Laccadive Sea	0	31	1	75	— / 0
Wrecks · Mediterranean Sea - Eastern Basin	0	31	1	97	0.0× / 0.6
Nav aids · Mozambique Channel	0	31	1	194	— / 0
Ordnance · North Sealong running	0	31	1	730	0.0× / 1.2
Piracy · Persian Gulflong running	0	31	1	1,026	— / 0
Nav aids · Philippine Sea	0	31	1	86	— / 0
Volcanic · Philippine Sea	0	31	1	247	0.0× / 0.4
Other · South China Sealong running	0	31	1	837	— / 0
Other · The Northwestern Passages	0	31	1	92	— / 0
Surveys · North Atlantic Ocean	0	28.6	0	—	0.0× / 1
Incidents · Andaman or Burma Sea	0	22.4	0	—	0.0× / 0.2
Incidents · Arabian Sea	0	22.4	0	—	0.0× / 0.6
Other · Laptev Sea	0	22.4	0	—	— / 0
Surveys · Mozambique Channel	0	22.4	0	—	— / 0
Towing · South China Sea	0	22.4	0	—	— / 0
Cable ops · Beaufort Sea	0	18	0	—	— / 0
Cable ops · East Siberian Sea	0	14	0	—	— / 0
Cable ops · Norwegian Sea	0	11.7	0	—	0.0× / 0.2
Nav aids · Andaman or Burma Sea	0	4.7	0	—	0.0× / 0.6
Cable ops · English Channel	0	3.5	0	—	0.0× / 0.4
Quakes · South China Sea	0	2.4	0	—	0.0× / 0.6
Incidents · Japan Sea	0	1.4	0	—	0.0× / 0.4
Missiles · Black Sea	0	0.7	0	—	— / 0
Cable ops · Labrador Sea	0	0	0	—	0.0× / 0.2
Exercises · Mediterranean Sea - Western Basin	0	0	0	—	0.0× / 0.6
Surveys · Yellow Sea	0	0	0	—	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2010-10, 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.