Sea Ledger, October 2007

2007-10-01 to 2007-10-31 · archive

issued: 288
warning-days in force: 17,692
in force at month end: 564
sea × type cells: 249

baseline: same month, previous 5 years (2006-10, 2005-10, 2004-10, 2003-10, 2002-10)

By type

type	issued	warning-days	in force at end
Incidents	68	2,201.8	61
Exercises	45	897.8	26
Cable ops	43	1,494.8	45
Quakes	33	174.9	4
Nav aids	27	6,096.3	204
Surveys	22	2,308.5	75
Other	10	1,069.1	36
Spills	8	88	3
Icebergs	8	44.5	2
Derelicts	7	143.4	3
Missiles	6	62	2
Piracy	4	40.2	5
Restricted	3	421.4	14
Volcanic	2	247.3	8
Containers	1	5.6	0
Debris	1	36.8	1
Wrecks	0	1,812.1	58
Towing	0	20.4	0
Ordnance	0	217	7
Structures	0	310	10

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Ocean	16	59.7	2	34	1.0× / 16.6
Incidents · South Pacific Ocean	13	324.3	9	92	1.3× / 10
Incidents · North Pacific Ocean	10	194.1	6	91	1.8× / 5.6
Surveys · South Atlantic Oceansurge	10	95.5	3	135	2.6× / 3.8
Exercises · Bay of Bengal	10	69.2	3	33	1.8× / 5.6
Incidents · Philippine Sea	9	109.3	5	96	1.8× / 5
Quakes · Indian Oceansurge	9	29.5	0	—	3.5× / 2.6
Icebergs · South Atlantic Oceansurge	8	43.5	2	36	2.9× / 2.8
Nav aids · North Sealong running	7	445	16	377	1.3× / 5.4
Missiles · North Pacific Ocean	6	62	2	59	1.0× / 5.8
Quakes · South Pacific Ocean	6	22.9	0	—	0.7× / 8.8
Quakes · North Pacific Ocean	6	20.1	1	31	0.8× / 7.6
Incidents · South China Seasurge	5	210.7	6	84	2.3× / 2.2
Cable ops · South China Seasurge	5	209.3	8	234	2.5× / 2
Exercises · North Atlantic Ocean	5	155.5	6	63	0.7× / 7.4
Nav aids · North Pacific Oceansurgelong running	4	262.2	10	833	10× / 0.4
Nav aids · Gulf of Mexicosurgelong running	4	131.4	5	933	5.0× / 0.8
Other · South Atlantic Oceansurgelong running	4	106.1	2	396	4.0× / 1
Exercises · Yellow Seasurge	4	74.1	3	35	4.0× / 1
Incidents · Tasman Seasurge	4	72.7	2	61	2.5× / 1.6
Exercises · Laccadive Sea	4	71.1	1	35	0.4× / 9.8
Derelicts · South Atlantic Oceansurge	4	32.5	1	31	2.9× / 1.4
Piracy · Gulf of Adensurge	4	9.2	4	2	20× / 0.2
Incidents · North Atlantic Ocean	3	313	8	363	0.8× / 3.8
Incidents · Indian Ocean	3	248.8	7	163	1.0× / 3
Cable ops · Arabian Sea	3	86.9	3	117	1.5× / 2
Exercises · South Pacific Ocean	3	53.5	0	—	0.8× / 3.6
Exercises · North Pacific Ocean	3	50.1	1	44	0.5× / 5.6
Surveys · Gulf of Suezsurgelong running	3	48.3	4	470	15× / 0.2
Exercises · Japan Sea	3	43.1	3	35	1.4× / 2.2
Spills · North Atlantic Oceansurge	3	42	0	—	2.5× / 1.2
Spills · Gulf of Mexico	3	29	2	31	1.3× / 2.4
Exercises · Baltic Seanew	3	21.5	0	—	new / 0
Exercises · South Atlantic Ocean	3	16.9	0	—	0.7× / 4.6
Quakes · Tasman Seasurge	3	13.6	0	—	15× / 0.2
Incidents · Timor Seasurge	3	10.8	1	20	5.0× / 0.6
Nav aids · Irish Sea and St. George's Channellong running	2	155.9	5	601	2.0× / 1
Cable ops · Mediterranean Sea - Eastern Basin	2	146.4	3	162	0.8× / 2.6
Nav aids · Bass Straitlong running	2	128.4	5	408	2.5× / 0.8
Cable ops · Indian Oceannew	2	77.2	2	279	new / 0
Nav aids · Gulf of Suez	2	76.6	4	321	5.0× / 0.4
Restricted · North Atlantic Ocean	2	71.3	3	55	1.4× / 1.4
Surveys · Bay of Bengal	2	69.7	1	216	5.0× / 0.4
Incidents · Bay of Bengal	2	59.7	2	97	2.5× / 0.8
Surveys · Mediterranean Sea - Eastern Basin	2	47.1	2	44	1.4× / 1.4
Incidents · South Atlantic Ocean	2	46.3	0	—	0.6× / 3.2
Cable ops · English Channelnew	2	36	1	50	new / 0
Cable ops · Gulf of Suez	2	30.8	2	34	10× / 0.2
Surveys · Aegean Seanew	2	20	2	12	new / 0
Exercises · Arabian Sea	2	12.2	0	—	0.5× / 3.8
Cable ops · Eastern China Sea	2	7.3	1	50	3.3× / 0.6
Quakes · Bismarck Sea	2	6	0	—	3.3× / 0.6
Quakes · Gulf of Alaskanew	2	6	0	—	new / 0
Quakes · Solomon Sea	2	6	0	—	0.8× / 2.6
Incidents · Eastern China Sea	2	1.7	1	25	10× / 0.2
Nav aids · Gulf of Alaskanew	2	1.1	0	—	new / 0
Nav aids · Arabian Sealong running	1	461.5	15	660	1.7× / 0.6
Nav aids · Caribbean Sealong running	1	365	12	870	1.0× / 1
Nav aids · South Atlantic Ocean	1	176.7	6	361	0.3× / 3.2
Incidents · Arabian Sea	1	113.3	3	81	1.0× / 1
Cable ops · Caribbean Sea	1	110.5	3	209	5.0× / 0.2
Nav aids · Persian Gulflong running	1	108.5	4	438	1.7× / 0.6
Cable ops · Gulf of Guinea	1	74.6	3	226	2.5× / 0.4
Cable ops · Celtic Sea	1	71.4	1	267	0.8× / 1.2
Other · Arabian Sealong running	1	63.6	3	623	new / 0
Volcanic · Philippine Sealong running	1	62	2	392	5.0× / 0.2
Other · Coral Sea	1	57.9	2	234	1.7× / 0.6
Incidents · Coral Sea	1	56.3	1	75	0.2× / 4.4
Other · English Channel	1	38.6	2	120	2.5× / 0.4
Cable ops · Sea of Marmara	1	37.5	1	117	new / 0
Cable ops · North Atlantic Ocean	1	34.2	2	173	0.4× / 2.4
Restricted · Sea of Marmara	1	30.6	1	30	new / 0
Volcanic · Red Sea	1	30.3	1	30	new / 0
Incidents · Sea of Okhotsk	1	29.7	1	29	new / 0
Incidents · Japan Sea	1	29.1	1	29	1.7× / 0.6
Incidents · Bay of Biscay	1	28.6	1	28	new / 0
Exercises · Philippine Sea	1	28.5	0	—	5.0× / 0.2
Other · Andaman or Burma Sea	1	27.5	1	27	new / 0
Incidents · Mozambique Channel	1	27.4	1	27	2.5× / 0.4
Cable ops · Baffin Bay	1	27.3	1	27	new / 0
Cable ops · Banda Sea	1	24	1	23	new / 0
Incidents · Mediterranean Sea - Western Basin	1	24	1	23	5.0× / 0.2
Incidents · Bass Strait	1	23.4	1	23	new / 0
Surveys · Philippine Sea	1	21.6	1	21	1.3× / 0.8
Incidents · Arafura Sea	1	21.1	0	—	2.5× / 0.4
Incidents · Strait of Gibraltar	1	15.7	1	15	new / 0
Incidents · Java Sea	1	14.3	1	14	new / 0
Spills · Bering Sea	1	14	0	—	5.0× / 0.2
Surveys · North Pacific Ocean	1	12.6	0	—	5.0× / 0.2
Cable ops · Singapore Strait	1	12.6	1	50	new / 0
Exercises · Alboran Sea	1	10.8	0	—	2.5× / 0.4
Derelicts · South China Sea	1	9.5	0	—	5.0× / 0.2
Other · Inner Seas off the West Coast of Scotland	1	7.7	1	7	2.5× / 0.4
Derelicts · Laccadive Sea	1	6.7	0	—	new / 0
Derelicts · North Atlantic Ocean	1	6.4	0	—	0.6× / 1.8
Cable ops · Irish Sea and St. George's Channel	1	6	0	—	1.0× / 1
Debris · Timor Sea	1	5.8	0	—	new / 0
Containers · Great Australian Bight	1	5.6	0	—	new / 0
Exercises · North Sea	1	4.6	0	—	new / 0
Other · Philippine Sea	1	3.3	1	3	new / 0
Quakes · Bali Sea	1	3	0	—	5.0× / 0.2
Spills · Caribbean Sea	1	3	1	3	2.5× / 0.4
Quakes · North Atlantic Ocean	1	3	0	—	1.7× / 0.6
Quakes · Philippine Sea	1	2.8	1	33	0.4× / 2.4
Exercises · Andaman or Burma Sea	1	2.7	0	—	1.7× / 0.6
Surveys · Japan Sea	1	2.6	1	2	1.3× / 0.8
Incidents · Andaman or Burma Sea	1	2.3	0	—	new / 0
Exercises · Caribbean Sea	1	1.4	0	—	2.5× / 0.4
Surveys · Beaufort Sealong running	0	713	23	1,392	0.0× / 3.8
Nav aids · South Pacific Oceanlong running	0	620	20	664	0.0× / 3
Nav aids · Coral Sealong running	0	496	16	1,214	0.0× / 2.6
Surveys · Arctic Oceanlong running	0	403	13	1,392	0.0× / 2
Nav aids · Indian Oceanlong running	0	372	12	534	0.0× / 0.4
Nav aids · Bay of Bengallong running	0	248	8	870	0.0× / 0.4
Wrecks · North Sealong running	0	248	8	764	0.0× / 0.8
Wrecks · Mediterranean Sea - Eastern Basinlong running	0	217	7	1,220	0.0× / 0.4
Nav aids · Mozambique Channellong running	0	217	7	932	0.0× / 0.6
Wrecks · Persian Gulflong running	0	217	7	459	0.0× / 0.4
Exercises · Aegean Sea	0	186	6	301	0.0× / 2
Surveys · Baffin Baylong running	0	155	5	1,490	0.0× / 0.6
Nav aids · Inner Seas off the West Coast of Scotlandlong running	0	155	5	510	0.0× / 1.6
Nav aids · Laccadive Sealong running	0	155	5	663	— / 0
Structures · Mediterranean Sea - Eastern Basinlong running	0	155	5	496	0.0× / 0.2
Nav aids · Tasman Sealong running	0	155	5	627	0.0× / 0.2
Nav aids · Tyrrhenian Sealong running	0	155	5	1,077	0.0× / 2
Nav aids · Arafura Sealong running	0	124	4	450	0.0× / 0.2
Nav aids · Bering Sealong running	0	124	4	469	— / 0
Nav aids · English Channellong running	0	124	4	745	0.0× / 2.6
Wrecks · English Channel	0	124	4	146	— / 0
Nav aids · Mediterranean Sea - Western Basinlong running	0	124	4	558	0.0× / 0.6
Wrecks · South China Sealong running	0	124	4	1,105	0.0× / 0.4
Cable ops · Tasman Sealong running	0	113.3	3	640	0.0× / 0.2
Incidents · Mediterranean Sea - Eastern Basin	0	112.6	1	88	0.0× / 2
Nav aids · North Atlantic Oceanlong running	0	95	3	652	0.0× / 1.8
Nav aids · Great Australian Bightlong running	0	93	3	422	0.0× / 1.2
Surveys · Laptev Sealong running	0	93	3	526	0.0× / 0.2
Surveys · North Atlantic Oceanlong running	0	93	3	574	0.0× / 0.8
Ordnance · North Sea	0	93	3	173	0.0× / 0.4
Other · Persian Gulflong running	0	93	3	632	0.0× / 0.4
Other · South Pacific Oceanlong running	0	93	3	492	0.0× / 0.6
Surveys · Sea of Okhotsk	0	92	2	157	0.0× / 0.8
Wrecks · Indian Oceanlong running	0	76.1	2	1,059	— / 0
Nav aids · Andaman or Burma Sealong running	0	62	2	728	0.0× / 0.6
Derelicts · Arabian Sea	0	62	2	127	0.0× / 0.2
Wrecks · Arabian Sealong running	0	62	2	557	— / 0
Quakes · Bay of Bengal	0	62	2	324	0.0× / 0.2
Wrecks · Bay of Bengallong running	0	62	2	516	— / 0
Nav aids · Celtic Sea	0	62	2	139	0.0× / 2.2
Wrecks · Coral Sealong running	0	62	2	644	0.0× / 0.2
Other · Indian Oceanlong running	0	62	2	587	0.0× / 1
Exercises · Ionian Sea	0	62	2	292	0.0× / 1.2
Nav aids · Mediterranean Sea - Eastern Basinlong running	0	62	2	1,167	0.0× / 0.2
Cable ops · North Sea	0	62	2	203	0.0× / 1
Other · North Sea	0	62	2	88	0.0× / 1.6
Restricted · North Sealong running	0	62	2	450	0.0× / 0.6
Structures · North Sealong running	0	62	2	436	— / 0
Cable ops · Persian Gulf	0	62	2	143	— / 0
Wrecks · Philippine Sealong running	0	62	2	569	0.0× / 0.2
Nav aids · Sea of Okhotsklong running	0	62	2	498	0.0× / 0.2
Other · South China Sealong running	0	62	2	504	— / 0
Volcanic · South Pacific Ocean	0	62	2	270	— / 0
Wrecks · South Pacific Oceanlong running	0	62	2	411	0.0× / 0.2
Wrecks · Tasman Sealong running	0	62	2	530	— / 0
Surveys · The Northwestern Passageslong running	0	62	2	375	0.0× / 0.4
Ordnance · Tyrrhenian Sea	0	62	2	349	— / 0
Wrecks · Tyrrhenian Sealong running	0	62	2	589	— / 0
Cable ops · Bay of Bengal	0	57.6	0	—	0.0× / 1.2
Incidents · Adriatic Sea	0	51.4	1	63	0.0× / 0.2
Other · Mediterranean Sea - Eastern Basin	0	51.4	1	195	0.0× / 0.6
Incidents · Gulf of Guinea	0	40.8	0	—	0.0× / 0.6
Restricted · Alboran Sea	0	31	1	93	— / 0
Surveys · Arabian Sealong running	0	31	1	659	0.0× / 0.2
Debris · Arctic Oceanlong running	0	31	1	1,044	— / 0
Other · Arctic Ocean	0	31	1	57	— / 0
Nav aids · Baltic Sea	0	31	1	135	— / 0
Volcanic · Banda Sea	0	31	1	212	— / 0
Cable ops · Bass Strait	0	31	1	91	0.0× / 0.6
Other · Bay of Bengallong running	0	31	1	366	0.0× / 0.2
Restricted · Bay of Bengallong running	0	31	1	561	— / 0
Surveys · Bering Sea	0	31	1	43	— / 0
Exercises · Black Sea	0	31	1	195	0.0× / 7.2
Ordnance · Black Sea	0	31	1	156	— / 0
Wrecks · Black Sea	0	31	1	93	— / 0
Other · Caribbean Sea	0	31	1	112	— / 0
Restricted · Caribbean Sea	0	31	1	260	— / 0
Wrecks · Caribbean Sealong running	0	31	1	366	0.0× / 0.4
Surveys · Chukchi Sealong running	0	31	1	925	— / 0
Other · Eastern China Sealong running	0	31	1	583	— / 0
Surveys · Greenland Sealong running	0	31	1	1,708	— / 0
Wrecks · Gulf of Guinealong running	0	31	1	383	0.0× / 0.2
Cable ops · Gulf of Mexico	0	31	1	72	0.0× / 0.4
Other · Gulf of Mexicolong running	0	31	1	709	— / 0
Structures · Gulf of Mexico	0	31	1	48	0.0× / 0.2
Other · Gulf of Suezlong running	0	31	1	607	— / 0
Structures · Gulf of Suez	0	31	1	196	— / 0
Other · Gulf of Thailand	0	31	1	321	— / 0
Restricted · Indian Oceanlong running	0	31	1	920	0.0× / 0.2
Wrecks · Inner Seas off the West Coast of Scotland	0	31	1	87	0.0× / 0.2
Nav aids · Ionian Sealong running	0	31	1	552	0.0× / 0.2
Wrecks · Irish Sea and St. George's Channellong running	0	31	1	1,147	— / 0

Cite: seahazards.com Sea Ledger, 2007-10, 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.