Sea Ledger, November 2006

2006-11-01 to 2006-11-30 · archive

issued: 340
warning-days in force: 12,263
in force at month end: 402
sea × type cells: 228

baseline: same month, previous 5 years (2005-11, 2004-11, 2003-11, 2002-11, 2001-11)

By type

type	issued	warning-days	in force at end
Quakes	62	171.5	6
Exercises	57	870.6	28
Incidents	55	1,388.8	39
Cable ops	44	874.6	29
Nav aids	40	3,852.7	131
Icebergs	15	81.6	3
Surveys	14	2,160.4	69
Derelicts	12	52.9	4
Other	11	761.8	25
Spills	5	79	2
Missiles	4	60	2
Towing	4	41	2
Containers	4	16.7	2
Volcanic	3	88.3	4
Restricted	3	220.8	8
Ordnance	2	50.7	3
Debris	2	72.7	2
Mines	1	5.7	0
Wrecks	1	1,213	37
War risk	1	12.3	0
Structures	0	127.7	4
Piracy	0	60	2

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Quakes · North Pacific Oceansurge	34	96.3	0	—	4.2× / 8.2
Cable ops · South Atlantic Ocean	16	80.9	2	175	0.9× / 18.6
Exercises · Bay of Bengalsurge	13	57.5	2	31	2.2× / 6
Incidents · Indian Oceansurge	11	146.9	7	37	2.2× / 5
Exercises · North Atlantic Ocean	9	75.4	2	95	0.9× / 9.8
Exercises · Laccadive Sea	9	63.9	2	31	1.1× / 8.6
Quakes · South Pacific Ocean	9	16.7	4	17	1.0× / 9
Icebergs · South Pacific Oceannew	8	45.3	1	34	new / 0
Incidents · South Pacific Ocean	7	287	6	78	1.8× / 4
Cable ops · Mediterranean Sea - Eastern Basinsurge	7	139.2	4	55	2.5× / 2.8
Incidents · North Pacific Ocean	6	209.6	6	72	0.6× / 10
Nav aids · Coral Seasurgelong running	6	199.7	8	879	3.3× / 1.8
Incidents · South Atlantic Ocean	6	86.5	2	78	1.4× / 4.4
Quakes · Solomon Seasurge	6	19.2	0	—	10× / 0.6
Exercises · North Pacific Ocean	5	51.8	1	31	1.0× / 5.2
Cable ops · Bay of Bengalsurge	5	36.7	4	23	3.6× / 1.4
Derelicts · Indian Oceansurge	5	12.1	3	12	3.1× / 1.6
Missiles · North Pacific Ocean	4	60	2	32	0.8× / 5.2
Icebergs · Southern Oceansurge	4	18.6	2	10	2.9× / 1.4
Quakes · Indian Ocean	4	12	0	—	1.8× / 2.2
Incidents · Tasman Seasurge	4	0.2	0	—	2.2× / 1.8
Nav aids · Caribbean Seasurgelong running	3	237.3	9	535	7.5× / 0.4
Nav aids · Inner Seas off the West Coast of Scotland	3	119.1	3	175	1.3× / 2.4
Incidents · North Atlantic Ocean	3	87.5	1	64	0.5× / 6.2
Nav aids · English Channellong running	3	87.1	4	410	1.1× / 2.8
Exercises · Yellow Seasurge	3	84	3	36	3.0× / 1
Exercises · Japan Seasurge	3	78.8	2	36	7.5× / 0.4
Incidents · South China Sea	3	60.5	2	61	0.8× / 3.8
Nav aids · North Sea	3	49.3	2	42	0.6× / 4.8
Surveys · South Atlantic Ocean	3	43.5	1	117	0.9× / 3.2
Spills · North Atlantic Oceansurge	3	37	1	30	2.5× / 1.2
Exercises · Red Seanew	3	34.3	2	22	new / 0
Nav aids · Red Seasurgelong running	3	30.4	2	850	7.5× / 0.4
Cable ops · Arabian Sea	3	28.5	1	28	1.4× / 2.2
Icebergs · South Atlantic Ocean	3	17.7	0	—	1.1× / 2.6
Exercises · South Pacific Ocean	3	10.1	1	8	0.6× / 4.8
Nav aids · South Pacific Ocean	2	561.5	20	329	0.8× / 2.4
Exercises · Aegean Sea	2	277.6	10	338	0.8× / 2.4
Nav aids · North Pacific Oceannewlong running	2	172.5	6	510	new / 0
Incidents · Philippine Sea	2	112.7	3	75	0.4× / 5.2
Cable ops · South China Sea	2	111.8	2	117	2.5× / 0.8
Nav aids · Mediterranean Sea - Western Basin	2	98.1	4	223	2.5× / 0.8
Incidents · Bay of Bengal	2	80.7	2	66	5.0× / 0.4
Other · Mediterranean Sea - Eastern Basin	2	71.6	0	—	2.0× / 1
Nav aids · North Atlantic Ocean	2	69.5	3	317	0.5× / 3.8
Nav aids · Sea of Okhotsk	2	59.1	3	163	10× / 0.2
Other · South Atlantic Ocean	2	47	2	61	2.0× / 1
Volcanic · Philippine Seanew	2	44.5	2	57	new / 0
Spills · Gulf of Mexico	2	35	1	40	0.9× / 2.2
Restricted · North Atlantic Oceannew	2	29.9	1	41	new / 0
Towing · Black Seanew	2	28.4	1	56	new / 0
Nav aids · Gulf of Alaskanew	2	22.1	2	11	new / 0
Ordnance · Tyrrhenian Sea	2	20.7	2	14	5.0× / 0.4
Incidents · Coral Sea	2	18.2	1	30	0.6× / 3.2
Exercises · Persian Gulf	2	14.5	0	—	5.0× / 0.4
Towing · South Atlantic Ocean	2	12.6	1	12	10× / 0.2
Cable ops · North Atlantic Ocean	2	12.5	0	—	2.5× / 0.8
Derelicts · North Atlantic Ocean	2	12.3	0	—	0.4× / 4.8
Derelicts · South Pacific Ocean	2	8.7	1	5	10× / 0.2
Quakes · Sea of Okhotsk	2	6	0	—	2.5× / 0.8
Exercises · Arabian Sea	2	5.8	0	—	0.4× / 4.8
Containers · North Pacific Ocean	2	1.8	1	1	10× / 0.2
Nav aids · Laccadive Sea	1	126	4	338	5.0× / 0.2
Nav aids · Andaman or Burma Sealong running	1	125	4	393	1.7× / 0.6
Wrecks · North Sealong running	1	118.1	4	429	1.7× / 0.6
Other · South Pacific Ocean	1	107.5	4	157	5.0× / 0.2
Nav aids · Mediterranean Sea - Eastern Basinlong running	1	106.1	3	832	1.7× / 0.6
Surveys · Arabian Sealong running	1	62.1	2	621	1.7× / 0.6
Nav aids · Bass Strait	1	60.4	2	73	5.0× / 0.2
Cable ops · Black Sea	1	60	2	64	2.5× / 0.4
Surveys · Gulf of Suez	1	52.4	2	135	2.5× / 0.4
Nav aids · Persian Gulf	1	49.3	2	103	1.7× / 0.6
Surveys · Indian Ocean	1	46	2	57	1.3× / 0.8
Cable ops · Laccadive Sea	1	43.8	2	45	2.5× / 0.4
Cable ops · Java Sea	1	41.9	1	33	1.3× / 0.8
Incidents · Mozambique Channel	1	39.3	1	46	2.5× / 0.4
Surveys · Sea of Marmara	1	38.9	1	174	new / 0
Surveys · Philippine Sea	1	31.9	1	37	1.7× / 0.6
Surveys · North Sea	1	31.5	1	206	1.7× / 0.6
Nav aids · Irish Sea and St. George's Channel	1	30.7	1	266	0.7× / 1.4
Cable ops · Red Sea	1	29.6	1	29	new / 0
Surveys · English Channel	1	27.3	0	—	1.3× / 0.8
Other · North Atlantic Ocean	1	27.2	1	27	0.8× / 1.2
Nav aids · South Atlantic Ocean	1	26.9	1	26	0.2× / 6.2
Incidents · Arafura Sea	1	26.6	1	26	1.3× / 0.8
Surveys · Caribbean Sea	1	24.4	1	24	new / 0
Cable ops · Malacca Strait	1	24.4	1	24	new / 0
Incidents · Arabian Sea	1	23.8	0	—	2.5× / 0.4
Other · Mediterranean Sea - Western Basin	1	23.1	1	23	new / 0
Other · Celtic Sea	1	22.6	1	22	0.8× / 1.2
Incidents · Mediterranean Sea - Eastern Basin	1	19.7	1	19	0.3× / 3.4
Cable ops · Sulu Sea	1	16.5	1	16	new / 0
Other · Malacca Strait	1	15.8	1	15	new / 0
Incidents · Sea of Okhotsk	1	14.6	1	14	new / 0
Incidents · Gulf of Oman	1	14.4	1	14	new / 0
Volcanic · South Pacific Ocean	1	13.8	1	13	new / 0
War risk · South Atlantic Ocean	1	12.3	0	—	new / 0
Incidents · Persian Gulf	1	12.2	1	12	5.0× / 0.2
Cable ops · Gulf of Oman	1	10.6	1	10	new / 0
Cable ops · Gulf of Aden	1	9.6	1	9	new / 0
Exercises · South Atlantic Ocean	1	9.1	0	—	0.3× / 3.8
Containers · North Atlantic Ocean	1	8.6	1	34	0.8× / 1.2
Incidents · Laccadive Sea	1	7.8	0	—	new / 0
Debris · South Atlantic Ocean	1	6.8	0	—	new / 0
Derelicts · Bay of Biscay	1	6.5	0	—	new / 0
Derelicts · Mediterranean Sea - Western Basin	1	6.5	0	—	new / 0
Surveys · Mediterranean Sea - Western Basin	1	6.4	1	6	5.0× / 0.2
Containers · Bay of Biscay	1	6.3	0	—	5.0× / 0.2
Mines · South Atlantic Ocean	1	5.7	0	—	new / 0
Surveys · Celtic Sea	1	5.5	0	—	0.8× / 1.2
Exercises · Mozambique Channel	1	5.3	0	—	new / 0
Quakes · Molukka Sea	1	4.6	1	31	1.0× / 1
Debris · English Channel	1	3.9	0	—	2.5× / 0.4
Surveys · Tasman Sea	1	3.9	1	3	new / 0
Other · Caribbean Sea	1	3.5	1	3	new / 0
Restricted · Alboran Sea	1	3.3	1	3	new / 0
Quakes · Banda Sea	1	3	0	—	0.6× / 1.8
Quakes · Bismarck Sea	1	3	0	—	0.8× / 1.2
Quakes · Eastern China Sea	1	3	0	—	5.0× / 0.2
Quakes · South Atlantic Ocean	1	3	0	—	0.6× / 1.6
Quakes · Southern Ocean	1	3	0	—	1.3× / 0.8
Quakes · North Atlantic Ocean	1	1.3	1	1	2.5× / 0.4
Exercises · Gulf of Alaska	1	1	0	—	new / 0
Other · Irish Sea and St. George's Channel	1	0.9	0	—	new / 0
Derelicts · Coral Sea	1	0.8	0	—	new / 0
Cable ops · Indian Ocean	1	0.4	0	—	1.7× / 0.6
Incidents · North Sea	1	0.1	0	—	new / 0
Surveys · Beaufort Sealong running	0	690	23	1,057	— / 0
Nav aids · Bay of Bengallong running	0	393.7	9	645	0.0× / 0.2
Surveys · Arctic Oceanlong running	0	360	12	1,057	— / 0
Nav aids · Arabian Sealong running	0	228.9	6	834	0.0× / 0.6
Nav aids · Indian Ocean	0	210	7	199	0.0× / 0.6
Wrecks · Mediterranean Sea - Eastern Basinlong running	0	180	6	885	0.0× / 0.4
Surveys · Baffin Baylong running	0	150	5	1,155	— / 0
Nav aids · Bering Sea	0	122.3	4	134	— / 0
Nav aids · Mozambique Channellong running	0	120	4	597	0.0× / 1
Other · Persian Gulflong running	0	120	4	414	0.0× / 0.2
Wrecks · South China Sealong running	0	104.7	3	770	0.0× / 1
Wrecks · Arabian Sealong running	0	91.9	1	602	0.0× / 0.4
Nav aids · Arafura Sea	0	90	3	115	0.0× / 0.4
Nav aids · Gulf of Mexicolong running	0	90	3	598	0.0× / 0.6
Surveys · Laptev Sea	0	90	3	191	— / 0
Wrecks · Persian Gulf	0	90	3	326	— / 0
Other · South China Sea	0	90	3	169	0.0× / 0.2
Nav aids · Tyrrhenian Sealong running	0	90	3	742	0.0× / 1.4
Nav aids · Tasman Sealong running	0	67.7	2	830	0.0× / 1
Other · Arabian Sea	0	60	2	288	0.0× / 0.2
Wrecks · Bay of Bengal	0	60	2	181	— / 0
Wrecks · Coral Sea	0	60	2	309	0.0× / 0.2
Nav aids · Great Australian Bight	0	60	2	161	0.0× / 1.2
Incidents · Gulf of Guinea	0	60	2	41	— / 0
Exercises · Ionian Sea	0	60	2	338	0.0× / 1.2
Surveys · North Atlantic Ocean	0	60	2	239	0.0× / 1.6
Piracy · Persian Gulflong running	0	60	2	660	0.0× / 0.2
Surveys · Persian Gulf	0	60	2	212	0.0× / 0.4
Cable ops · Tasman Sea	0	60	2	305	0.0× / 0.2
Wrecks · Tasman Sea	0	60	2	195	— / 0
Surveys · The Northwestern Passages	0	60	2	40	— / 0
Wrecks · Tyrrhenian Sea	0	60	2	254	0.0× / 0.2
Surveys · Black Sea	0	53	0	—	0.0× / 0.6
Surveys · Bay of Bengal	0	45.6	0	—	0.0× / 0.4
Cable ops · Persian Gulf	0	40.6	1	115	0.0× / 0.6
Structures · Persian Gulflong running	0	37.7	1	773	— / 0
Wrecks · Yellow Sealong running	0	37.7	1	897	— / 0
Ordnance · Arabian Sea	0	30	1	327	0.0× / 0.2
Debris · Arctic Oceanlong running	0	30	1	709	— / 0
Other · Bay of Bengal	0	30	1	31	— / 0
Restricted · Bay of Bengal	0	30	1	226	— / 0
Wrecks · Caribbean Sea	0	30	1	31	— / 0
Nav aids · Celtic Sea	0	30	1	69	0.0× / 2.2
Surveys · Chukchi Sealong running	0	30	1	590	— / 0
Other · Eastern China Sea	0	30	1	248	— / 0
Wrecks · Eastern China Sea	0	30	1	164	— / 0
Surveys · Greenland Sealong running	0	30	1	1,373	— / 0
Wrecks · Gulf of Guinea	0	30	1	48	— / 0
Cable ops · Gulf of Mexico	0	30	1	56	0.0× / 0.4
Other · Gulf of Mexicolong running	0	30	1	374	0.0× / 1
Other · Gulf of Suez	0	30	1	272	— / 0
Other · Indian Ocean	0	30	1	252	0.0× / 0.8
Restricted · Indian Oceanlong running	0	30	1	585	— / 0
Wrecks · Indian Oceanlong running	0	30	1	724	— / 0
Nav aids · Ionian Sea	0	30	1	217	0.0× / 0.6
Wrecks · Irish Sea and St. George's Channellong running	0	30	1	812	— / 0
Incidents · Japan Sea	0	30	1	38	0.0× / 1
Nav aids · Malacca Straitlong running	0	30	1	427	— / 0
Wrecks · Malacca Strait	0	30	1	247	— / 0
Restricted · Mediterranean Sea - Eastern Basin	0	30	1	177	— / 0
Structures · Mediterranean Sea - Eastern Basin	0	30	1	161	0.0× / 0.2
Exercises · Mediterranean Sea - Western Basin	0	30	1	90	0.0× / 2.4
Wrecks · North Atlantic Ocean	0	30	1	301	— / 0
Debris · North Pacific Ocean	0	30	1	93	0.0× / 0.6
Restricted · North Pacific Ocean	0	30	1	192	— / 0
Surveys · North Pacific Oceanlong running	0	30	1	486	0.0× / 0.2
Volcanic · North Pacific Ocean	0	30	1	327	0.0× / 0.2
Cable ops · North Sea	0	30	1	42	0.0× / 1.8
Restricted · North Sea	0	30	1	115	— / 0
Structures · North Sea	0	30	1	101	— / 0
Wrecks · Philippine Sea	0	30	1	234	— / 0
Wrecks · Red Sea	0	30	1	162	0.0× / 0.2
Surveys · Sea of Azov	0	30	1	35	— / 0

Cite: seahazards.com Sea Ledger, 2006-11, 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.