Sea Ledger, January 2009

2009-01-01 to 2009-01-31 · archive

issued: 424
warning-days in force: 8,379
in force at month end: 279
sea × type cells: 178

baseline: same month, previous 5 years (2008-01, 2007-01, 2006-01, 2005-01, 2004-01)

By type

type	issued	warning-days	in force at end
Incidents	85	835.8	24
Exercises	75	498.5	22
Nav aids	70	2,246.2	73
Cable ops	58	1,032.4	38
Quakes	44	129.7	2
Spills	18	189	10
Surveys	17	2,114.5	68
Derelicts	13	45.1	2
Debris	10	80.2	2
Icebergs	8	59.1	2
Missiles	7	68.4	2
Other	6	317.4	11
Wrecks	6	454.4	13
Containers	4	20.6	2
War risk	1	24.5	1
Ordnance	1	32.4	2
Restricted	1	41.2	1
Volcanic	0	116.4	3
Piracy	0	63.9	1
Structures	0	9.4	0

By sea and type · 178 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Quakes · South Pacific Oceansurge	25	73.8	1	30	2.1× / 11.8
Cable ops · South Atlantic Ocean	24	198.4	6	84	1.1× / 22.8
Incidents · South Pacific Ocean	17	68	1	34	1.7× / 10
Incidents · North Pacific Oceansurge	14	146.3	4	77	2.2× / 6.4
Surveys · Mediterranean Sea - Eastern Basinsurge	14	88.8	3	67	7.8× / 1.8
Incidents · Indian Oceansurge	13	123.1	4	56	3.1× / 4.2
Nav aids · South Atlantic Oceansurgelong running	10	300.4	12	438	4.5× / 2.2
Spills · Gulf of Mexicosurge	10	113	5	24	2.5× / 4
Exercises · Bay of Bengal	10	86.5	2	57	1.9× / 5.2
Nav aids · North Sealong running	9	229.1	6	390	1.0× / 9
Incidents · Philippine Sea	9	57.2	2	50	1.3× / 6.8
Exercises · Yellow Seasurge	9	49.7	2	29	6.4× / 1.4
Exercises · Arabian Seasurge	9	42.7	1	30	2.5× / 3.6
Icebergs · South Atlantic Ocean	8	59.1	2	32	0.9× / 8.4
Exercises · North Pacific Oceansurge	8	48.4	5	35	2.1× / 3.8
Incidents · North Atlantic Oceansurge	6	159.2	5	55	2.0× / 3
Nav aids · North Atlantic Oceansurge	6	70.1	2	208	2.3× / 2.6
Missiles · North Pacific Ocean	6	62	2	62	1.0× / 6.2
Exercises · South Atlantic Ocean	6	42.8	2	26	1.8× / 3.4
Exercises · Japan Seasurge	6	35.7	1	28	5.0× / 1.2
Nav aids · Gulf of Alaskanew	6	6.4	0	—	new / 0
Nav aids · Indian Oceansurge	5	71	2	310	5.0× / 1
Spills · North Atlantic Ocean	5	46	4	17	1.6× / 3.2
Nav aids · Inner Seas off the West Coast of Scotland	5	39.8	1	50	0.9× / 5.6
Exercises · Aegean Sealong running	5	38.2	4	369	1.3× / 3.8
Wrecks · North Seasurge	5	30.2	0	—	13× / 0.4
Exercises · North Atlantic Ocean	5	16.1	1	118	1.0× / 4.8
Quakes · North Pacific Ocean	5	12.1	1	16	0.7× / 7
Nav aids · The Coastal Waters of Southeast Alaska and British Columbiasurge	5	8.5	1	31	25× / 0.2
Cable ops · Bay of Bengalsurge	4	187.8	7	64	2.2× / 1.8
Nav aids · Irish Sea and St. George's Channel	4	92.7	3	104	1.3× / 3.2
Exercises · Laccadive Sea	4	45.3	1	36	0.3× / 11.4
Cable ops · Mediterranean Sea - Eastern Basin	4	40.2	3	75	1.3× / 3
Exercises · Philippine Seasurge	4	36.8	0	—	4.0× / 1
Cable ops · Arabian Sea	4	34.3	3	50	1.1× / 3.6
Nav aids · English Channel	4	31.6	2	47	1.1× / 3.8
Cable ops · Laccadive Seasurge	4	26	1	30	6.7× / 0.6
Derelicts · South China Seanew	4	17	1	23	new / 0
Quakes · Indian Ocean	4	13.8	0	—	0.8× / 5.2
Debris · North Atlantic Oceannew	4	10.6	1	10	new / 0
Nav aids · Celtic Sea	3	80.9	3	85	1.0× / 3
Incidents · Laccadive Seasurge	3	51.7	2	20	3.8× / 0.8
Incidents · South China Sea	3	37.4	1	73	1.5× / 2
Incidents · Coral Sea	3	23.5	0	—	1.1× / 2.8
Debris · North Pacific Oceansurge	3	19.8	0	—	15× / 0.2
Containers · North Atlantic Ocean	3	19.3	1	12	0.9× / 3.2
Derelicts · Indian Oceansurge	3	13.2	1	31	7.5× / 0.4
Incidents · Tasman Sea	3	12.2	0	—	1.3× / 2.4
Incidents · South Atlantic Ocean	3	8.2	0	—	1.5× / 2
Derelicts · South Atlantic Oceansurge	3	4.5	0	—	2.5× / 1.2
Nav aids · North Pacific Oceanlong running	2	419.4	11	477	0.9× / 2.2
Incidents · Mediterranean Sea - Eastern Basin	2	86.3	1	72	0.8× / 2.6
Cable ops · South China Sealong running	2	34.2	1	483	2.5× / 0.8
Cable ops · South Pacific Ocean	2	29.7	2	26	10× / 0.2
Spills · Gulf of Alaskanew	2	28	0	—	new / 0
Cable ops · North Pacific Oceannew	2	16.6	1	29	new / 0
Cable ops · Bali Sea	2	15.3	1	15	10× / 0.2
Incidents · Southern Ocean	2	11.1	0	—	2.0× / 1
Debris · Philippine Seanew	2	7.4	0	—	new / 0
Quakes · Banda Sea	2	6	0	—	1.0× / 2
Quakes · North Atlantic Ocean	2	6	0	—	2.0× / 1
Quakes · Solomon Sea	2	6	0	—	1.7× / 1.2
Exercises · Indian Ocean	2	5.9	1	8	5.0× / 0.4
Other · South Atlantic Ocean	2	5.7	1	11	5.0× / 0.4
Derelicts · North Pacific Ocean	2	2.8	0	—	3.3× / 0.6
Nav aids · Bristol Channel	2	1.2	0	—	3.3× / 0.6
Nav aids · Tasman Sea	2	1.1	0	—	2.0× / 1
Incidents · Bismarck Sea	2	0.9	0	—	10× / 0.2
Nav aids · South Pacific Oceanlong running	1	96.8	4	602	0.6× / 1.8
Nav aids · Gulf of Suez	1	94.3	3	274	new / 0
Nav aids · Gulf of Mexicolong running	1	94.1	4	477	1.0× / 1
Other · Mediterranean Sea - Eastern Basinlong running	1	72.4	2	433	1.7× / 0.6
Wrecks · Persian Gulf	1	71.2	3	78	1.0× / 1
Cable ops · Gulf of Suez	1	61.3	2	64	1.3× / 0.8
Cable ops · Gulf of Mexico	1	43.2	2	39	1.7× / 0.6
Nav aids · Coral Sea	1	35.5	1	333	0.7× / 1.4
Cable ops · Tasman Sea	1	27.7	0	—	1.0× / 1
Exercises · South China Sea	1	24.8	1	34	new / 0
War risk · Mediterranean Sea - Eastern Basin	1	24.5	1	24	new / 0
Surveys · South Atlantic Ocean	1	23.4	1	45	0.7× / 1.4
Restricted · North Atlantic Ocean	1	22.4	1	22	5.0× / 0.2
Surveys · Indian Ocean	1	22	0	—	2.5× / 0.4
Cable ops · Yellow Sea	1	21.6	1	34	new / 0
Nav aids · Sea of Okhotsk	1	19.4	1	19	new / 0
Cable ops · North Sea	1	17.2	0	—	0.8× / 1.2
Cable ops · Eastern China Sea	1	13.4	0	—	1.3× / 0.8
Cable ops · Java Sea	1	10.1	0	—	new / 0
Incidents · Gulf of Oman	1	8.8	0	—	new / 0
Exercises · Baltic Sea	1	8.2	0	—	2.5× / 0.4
Nav aids · Bass Strait	1	7.9	0	—	1.0× / 1
Other · South Pacific Ocean	1	7.7	0	—	5.0× / 0.2
Exercises · Arctic Ocean	1	7.5	1	7	new / 0
Cable ops · Black Sea	1	6.9	0	—	1.0× / 1
Cable ops · North Atlantic Ocean	1	6.9	1	6	0.3× / 3
Other · Gulf of Aqaba	1	6.7	1	6	new / 0
Derelicts · North Atlantic Ocean	1	6.6	0	—	0.7× / 1.4
Surveys · Timor Sea	1	6.6	1	6	new / 0
Exercises · Andaman or Burma Sea	1	6.4	0	—	2.5× / 0.4
Debris · Caribbean Sea	1	6.4	0	—	new / 0
Missiles · Philippine Sea	1	6.4	0	—	new / 0
Incidents · Tyrrhenian Sea	1	5.4	1	5	2.5× / 0.4
Other · North Sea	1	3.7	0	—	0.7× / 1.4
Quakes · Arabian Sea	1	3	0	—	5.0× / 0.2
Incidents · Bay of Bengal	1	3	1	60	2.5× / 0.4
Quakes · Gulf of Alaska	1	3	0	—	2.5× / 0.4
Quakes · Gulf of California	1	3	0	—	5.0× / 0.2
Quakes · Savu Sea	1	3	0	—	new / 0
Exercises · Alboran Sea	1	2.2	0	—	new / 0
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	2	1	2	5.0× / 0.2
Ordnance · Persian Gulf	1	1.4	1	1	2.5× / 0.4
Containers · Celtic Sea	1	1.3	1	1	2.5× / 0.4
Exercises · South Pacific Ocean	1	0.9	0	—	0.5× / 2
Cable ops · English Channel	1	0.7	0	—	0.7× / 1.4
Incidents · Japan Sea	1	0.5	1	0	1.3× / 0.8
Exercises · Gulf of Mexico	1	0.4	0	—	2.5× / 0.4
Incidents · Arafura Sea	1	0.2	1	0	1.7× / 0.6
Nav aids · Great Australian Bight	1	0.2	0	—	1.7× / 0.6
Surveys · Beaufort Sealong running	0	744	24	1,850	0.0× / 0.6
Surveys · Arctic Oceanlong running	0	496	16	1,850	0.0× / 0.4
Nav aids · Gulf of Californialong running	0	279	9	397	— / 0
Surveys · Baffin Baylong running	0	186	6	1,948	0.0× / 0.4
Surveys · The Northwestern Passageslong running	0	186	6	833	— / 0
Cable ops · Caribbean Sea	0	93	3	261	0.0× / 0.8
Surveys · Laptev Sealong running	0	93	3	984	— / 0
Nav aids · Persian Gulf	0	93	3	100	0.0× / 0.8
Wrecks · The Northwestern Passages	0	93	3	147	— / 0
Wrecks · South Atlantic Ocean	0	71.4	2	112	— / 0
Wrecks · South China Sealong running	0	63.8	1	760	0.0× / 0.2
Other · Indian Ocean	0	62	2	227	0.0× / 0.2
Volcanic · Indian Ocean	0	62	2	227	— / 0
Nav aids · Malacca Strait	0	62	2	201	— / 0
Surveys · Malacca Strait	0	62	2	206	— / 0
Nav aids · South China Sea	0	40.4	1	314	0.0× / 0.2
Cable ops · Indian Ocean	0	39.2	1	106	0.0× / 1
Piracy · Gulf of Aden	0	32.9	0	—	— / 0
Cable ops · Andaman or Burma Sea	0	31	1	78	0.0× / 0.2
Debris · Arctic Oceanlong running	0	31	1	1,502	— / 0
Other · Arctic Oceanlong running	0	31	1	515	— / 0
Surveys · Bering Sea	0	31	1	107	— / 0
Other · Bismarck Sea	0	31	1	45	— / 0
Surveys · Chukchi Sealong running	0	31	1	1,383	— / 0
Other · Coral Sea	0	31	1	72	0.0× / 0.2
Wrecks · English Channel	0	31	1	193	0.0× / 0.4
Surveys · Greenland Sealong running	0	31	1	2,166	— / 0
Surveys · Gulf of Suezlong running	0	31	1	367	0.0× / 0.6
Wrecks · Inner Seas off the West Coast of Scotland	0	31	1	43	— / 0
Other · Ionian Sea	0	31	1	32	0.0× / 0.2
Wrecks · Laccadive Sea	0	31	1	305	— / 0
Nav aids · Mediterranean Sea - Eastern Basin	0	31	1	40	0.0× / 0.4
Surveys · Mediterranean Sea - Western Basin	0	31	1	65	0.0× / 0.6
Wrecks · North Atlantic Ocean	0	31	1	249	0.0× / 0.2
Ordnance · North Sea	0	31	1	92	0.0× / 0.2
Cable ops · Persian Gulf	0	31	1	81	0.0× / 0.4
Piracy · Persian Gulflong running	0	31	1	388	0.0× / 0.2
Surveys · Persian Gulf	0	31	1	158	0.0× / 0.2
Volcanic · Philippine Sea	0	31	1	210	0.0× / 1
Nav aids · Red Sea	0	31	1	134	— / 0
Other · South China Sea	0	31	1	199	0.0× / 0.2
Cable ops · Sulu Sea	0	31	1	178	— / 0
Volcanic · Banda Sea	0	23.4	0	—	— / 0
Incidents · North Sea	0	23.4	0	—	0.0× / 0.4
Surveys · Arabian Sea	0	17.2	0	—	0.0× / 0.8
Cable ops · Makassar Strait	0	15	0	—	0.0× / 0.2
Restricted · Alboran Sea	0	9.4	0	—	0.0× / 0.6
Incidents · Gulf of Aden	0	9.4	0	—	0.0× / 0.2
Nav aids · Philippine Sea	0	9.4	0	—	— / 0
Structures · South China Sea	0	9.4	0	—	— / 0
Restricted · Strait of Gibraltar	0	9.4	0	—	0.0× / 0.4
Debris · Indian Ocean	0	5	0	—	0.0× / 0.2
Surveys · Norwegian Sea	0	3.5	0	—	— / 0
Other · Gulf of Thailand	0	3.2	0	—	— / 0
Derelicts · Tasman Sea	0	1	0	—	0.0× / 0.6
Cable ops · Red Sea	0	0.7	0	—	0.0× / 0.4
Other · Inner Seas off the West Coast of Scotland	0	0.6	0	—	0.0× / 2.4
Wrecks · Baltic Sea	0	0.4	0	—	— / 0
Wrecks · Bay of Bengal	0	0.4	0	—	— / 0
Other · North Atlantic Ocean	0	0.4	0	—	0.0× / 1
Exercises · Ionian Sea	0	0	0	—	0.0× / 1.6

Cite: seahazards.com Sea Ledger, 2009-01, 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.