Sea Ledger, November 2007

2007-11-01 to 2007-11-30 · archive

issued: 331
warning-days in force: 17,920
in force at month end: 617
sea × type cells: 261

baseline: same month, previous 5 years (2006-11, 2005-11, 2004-11, 2003-11, 2002-11)

By type

type	issued	warning-days	in force at end
Incidents	68	2,280.8	88
Exercises	54	809.8	27
Quakes	50	211.8	4
Cable ops	47	1,435.7	49
Nav aids	29	6,210.4	210
Derelicts	21	218.1	9
Other	13	1,146	41
Spills	12	167	6
Surveys	11	2,170.3	71
Containers	8	43.3	2
Missiles	5	60	2
Icebergs	4	27.3	2
Wrecks	3	1,752.2	61
Debris	3	49	1
Restricted	1	408.8	13
Towing	1	14.9	1
Ordnance	1	225	7
Volcanic	0	240	8
Structures	0	300	10
Piracy	0	150	5

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Quakes · South Pacific Oceansurge	27	79.9	1	28	3.1× / 8.8
Cable ops · South Atlantic Ocean	15	57.7	1	31	0.9× / 16.8
Incidents · South Pacific Oceansurge	10	295.8	11	80	2.1× / 4.8
Incidents · North Pacific Ocean	9	234.2	10	75	1.0× / 9.2
Incidents · North Atlantic Ocean	8	307.9	11	82	1.4× / 5.8
Incidents · Philippine Sea	8	189.9	7	74	1.9× / 4.2
Exercises · North Atlantic Ocean	8	103.6	2	93	0.8× / 10.6
Exercises · Bay of Bengal	8	82.5	5	36	1.0× / 8.2
Incidents · South China Seasurge	7	210.6	10	80	2.5× / 2.8
Derelicts · South China Seanew	7	83.8	3	29	new / 0
Derelicts · North Atlantic Ocean	6	35.7	2	20	1.3× / 4.6
Exercises · South Atlantic Ocean	6	22.3	2	19	1.8× / 3.4
Nav aids · Irish Sea and St. George's Channelsurgelong running	5	178.7	7	631	3.1× / 1.6
Other · South Atlantic Oceansurgelong running	5	103.8	4	426	4.2× / 1.2
Surveys · South Atlantic Ocean	5	90.1	3	165	1.6× / 3.2
Cable ops · North Atlantic Oceansurge	5	72.7	2	203	4.2× / 1.2
Missiles · North Pacific Ocean	5	60	2	60	1.0× / 4.8
Cable ops · English Channelsurge	5	42.3	1	80	13× / 0.4
Quakes · Indian Ocean	5	15	0	—	1.7× / 3
Cable ops · Mediterranean Sea - Eastern Basin	4	105.4	4	145	1.1× / 3.6
Spills · Gulf of Mexico	4	69	1	39	1.8× / 2.2
Exercises · North Pacific Ocean	4	51.8	1	33	1.0× / 4
Exercises · Laccadive Sea	4	46.5	1	51	0.4× / 10.4
Spills · North Atlantic Oceansurge	4	41	3	23	2.2× / 1.8
Containers · North Atlantic Oceansurge	4	24.7	0	—	3.3× / 1.2
Exercises · Baltic Seanew	4	23.1	1	29	new / 0
Quakes · North Pacific Ocean	4	14.6	0	—	0.3× / 14.4
Quakes · Solomon Seasurge	4	12	0	—	2.2× / 1.8
Incidents · Indian Ocean	3	219.6	9	193	0.5× / 5.6
Nav aids · North Atlantic Oceanlong running	3	126.4	4	682	0.9× / 3.2
Incidents · Tasman Sea	3	92.4	3	56	1.7× / 1.8
Nav aids · Great Australian Bightsurgelong running	3	91.1	3	452	2.5× / 1.2
Exercises · Yellow Sea	3	71.7	2	34	1.9× / 1.6
Exercises · Japan Seasurge	3	70.7	2	34	3.0× / 1
Incidents · Gulf of Guineanew	3	46	2	22	new / 0
Exercises · Philippine Seasurge	3	21.4	0	—	15× / 0.2
Exercises · Arabian Sea	3	16.1	0	—	0.6× / 5
Exercises · Indian Oceansurge	3	4.4	0	—	15× / 0.2
Nav aids · North Sealong running	2	460.9	16	407	0.4× / 4.6
Cable ops · South China Sea	2	236.3	6	264	2.5× / 0.8
Nav aids · Mozambique Channellong running	2	230.3	8	962	2.5× / 0.8
Nav aids · South Atlantic Oceanlong running	2	188.4	7	391	0.4× / 5.2
Nav aids · English Channellong running	2	126.1	4	775	0.7× / 3
Other · South China Seanewlong running	2	70.6	3	534	new / 0
Incidents · Japan Sea	2	57.8	3	59	5.0× / 0.4
Cable ops · Gulf of Mexico	2	54.7	3	102	5.0× / 0.4
Incidents · Mozambique Channel	2	50.1	2	57	10× / 0.2
Cable ops · Sea of Marmaranew	2	46.8	3	147	new / 0
Cable ops · Black Sea	2	38.4	1	28	3.3× / 0.6
Incidents · Coral Sea	2	37.1	1	45	1.0× / 2
Spills · North Pacific Ocean	2	28	0	—	1.7× / 1.2
Surveys · Caribbean Sea	2	23	1	23	10× / 0.2
Icebergs · South Atlantic Ocean	2	22.5	0	—	0.6× / 3.2
Other · Celtic Sea	2	22	1	20	1.4× / 1.4
Exercises · South Pacific Ocean	2	15.1	0	—	0.5× / 4.2
Cable ops · Bay of Bengal	2	14.6	2	10	1.3× / 1.6
Debris · Arafura Sea	2	12.9	0	—	10× / 0.2
Derelicts · North Pacific Ocean	2	11.6	1	11	2.5× / 0.8
Containers · Mediterranean Sea - Eastern Basinnew	2	10.7	1	25	new / 0
Cable ops · North Pacific Ocean	2	8.8	2	4	5.0× / 0.4
Incidents · South Atlantic Ocean	2	8.1	1	21	0.4× / 5
Derelicts · Bass Straitnew	2	6.4	0	—	new / 0
Nav aids · The Coastal Waters of Southeast Alaska and British Columbianew	2	6.3	0	—	new / 0
Quakes · Bismarck Sea	2	6	0	—	1.4× / 1.4
Quakes · Coral Sea	2	6	0	—	0.9× / 2.2
Quakes · Flores Sea	2	6	0	—	10× / 0.2
Icebergs · Southern Ocean	2	4.8	2	2	1.7× / 1.2
Incidents · Southern Ocean	2	1.4	0	—	3.3× / 0.6
Nav aids · South Pacific Oceanlong running	1	600.4	21	694	0.6× / 1.8
Nav aids · Coral Sealong running	1	481.5	16	1,244	0.3× / 3
Nav aids · Tasman Sealong running	1	150.5	5	657	1.7× / 0.6
Incidents · Arabian Sea	1	113.3	4	83	1.7× / 0.6
Ordnance · North Sea	1	105	3	203	5.0× / 0.2
Surveys · North Atlantic Oceanlong running	1	95.8	3	604	0.6× / 1.6
Restricted · North Sealong running	1	83.4	3	480	new / 0
Cable ops · North Sea	1	71	2	233	1.0× / 1
Nav aids · Celtic Sea	1	65.7	2	169	0.5× / 2.2
Quakes · Bay of Bengal	1	63	2	354	new / 0
Wrecks · Arabian Sealong running	1	62.6	3	587	2.5× / 0.4
Nav aids · Mediterranean Sea - Eastern Basinlong running	1	61.3	2	1,197	1.7× / 0.6
Incidents · Mediterranean Sea - Eastern Basin	1	58.6	2	78	0.3× / 3.4
Nav aids · Baltic Sea	1	39.6	2	165	new / 0
Other · Mediterranean Sea - Eastern Basin	1	36	2	225	0.8× / 1.2
Wrecks · Southern Ocean	1	35.9	2	344	new / 0
Wrecks · South Atlantic Oceanlong running	1	33.7	2	992	new / 0
Incidents · Timor Sea	1	32.5	2	37	new / 0
Cable ops · Bass Strait	1	31.9	1	121	5.0× / 0.2
Surveys · South Pacific Ocean	1	28.5	1	28	new / 0
Surveys · Philippine Sea	1	26.6	1	51	1.3× / 0.8
Cable ops · Andaman or Burma Sea	1	24.5	1	24	new / 0
Incidents · Bass Strait	1	23.8	0	—	new / 0
Incidents · Laccadive Sea	1	23.7	1	23	5.0× / 0.2
Surveys · Gulf of Guinea	1	15.3	1	15	2.5× / 0.4
Towing · South Atlantic Ocean	1	14.9	1	14	1.7× / 0.6
Derelicts · Bay of Bengal	1	13.3	1	13	new / 0
Other · Bass Strait	1	12.7	1	12	2.5× / 0.4
Spills · Bering Sea	1	10	1	10	new / 0
Cable ops · Celtic Sea	1	9	0	—	1.3× / 0.8
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	8	1	8	new / 0
Exercises · Andaman or Burma Sea	1	7.9	0	—	1.0× / 1
Incidents · Gulf of Suez	1	7.7	1	7	new / 0
Derelicts · North Sea	1	6.9	0	—	5.0× / 0.2
Incidents · Andaman or Burma Sea	1	6.6	0	—	new / 0
Debris · South Atlantic Ocean	1	6.1	0	—	5.0× / 0.2
Containers · Mediterranean Sea - Western Basin	1	5.5	0	—	new / 0
Cable ops · Timor Sea	1	4.4	1	4	new / 0
Quakes · South Atlantic Ocean	1	3	0	—	0.6× / 1.6
Quakes · South China Sea	1	3	0	—	new / 0
Containers · Persian Gulf	1	2.4	1	2	new / 0
Exercises · Norwegian Sea	1	1.6	1	1	new / 0
Cable ops · Eastern China Sea	1	1.4	0	—	1.7× / 0.6
Quakes · Caribbean Sea	1	1.2	1	1	2.5× / 0.4
Exercises · Bering Sea	1	1.1	1	1	2.5× / 0.4
Derelicts · Timor Sea	1	0.2	0	—	2.5× / 0.4
Nav aids · Timor Sea	1	0.2	0	—	2.5× / 0.4
Other · Gulf of Alaska	1	0.1	0	—	new / 0
Other · Southern Ocean	1	0.1	0	—	new / 0
Nav aids · Bristol Channel	1	0	1	0	5.0× / 0.2
Derelicts · Celtic Sea	1	0	0	—	1.7× / 0.6
Surveys · Beaufort Sealong running	0	690	23	1,422	— / 0
Nav aids · Arabian Sealong running	0	450	15	690	0.0× / 0.4
Surveys · Arctic Oceanlong running	0	390	13	1,422	— / 0
Nav aids · Caribbean Sealong running	0	360	12	900	0.0× / 1
Nav aids · Indian Oceanlong running	0	360	12	564	0.0× / 0.4
Nav aids · North Pacific Oceanlong running	0	283.6	9	863	0.0× / 0.4
Nav aids · Bay of Bengallong running	0	240	8	900	0.0× / 0.2
Wrecks · North Sealong running	0	240	8	794	0.0× / 0.6
Wrecks · Mediterranean Sea - Eastern Basinlong running	0	210	7	1,250	0.0× / 0.4
Wrecks · Persian Gulflong running	0	210	7	489	— / 0
Exercises · Aegean Sea	0	180	6	331	0.0× / 2
Surveys · Baffin Baylong running	0	150	5	1,520	— / 0
Nav aids · Bass Straitlong running	0	150	5	438	0.0× / 0.4
Nav aids · Gulf of Mexicolong running	0	150	5	963	0.0× / 0.6
Nav aids · Inner Seas off the West Coast of Scotlandlong running	0	150	5	540	0.0× / 2.2
Nav aids · Laccadive Sealong running	0	150	5	693	0.0× / 0.4
Structures · Mediterranean Sea - Eastern Basinlong running	0	150	5	526	0.0× / 0.2
Nav aids · Tyrrhenian Sealong running	0	150	5	1,107	0.0× / 0.4
Nav aids · Arafura Sealong running	0	120	4	480	0.0× / 0.4
Nav aids · Bering Sealong running	0	120	4	499	— / 0
Wrecks · English Channel	0	120	4	176	— / 0
Piracy · Gulf of Aden	0	120	4	32	— / 0
Nav aids · Mediterranean Sea - Western Basinlong running	0	120	4	588	0.0× / 0.8
Nav aids · Persian Gulflong running	0	120	4	468	0.0× / 0.6
Wrecks · South China Sealong running	0	120	4	1,135	0.0× / 0.2
Nav aids · Gulf of Suez	0	119.4	3	351	0.0× / 0.2
Surveys · Gulf of Suezlong running	0	101	3	500	0.0× / 0.4
Other · Arabian Sealong running	0	90	3	653	— / 0
Cable ops · Caribbean Sea	0	90	3	239	— / 0
Surveys · Laptev Sealong running	0	90	3	556	— / 0
Other · Persian Gulflong running	0	90	3	662	0.0× / 0.2
Other · South Pacific Oceanlong running	0	90	3	522	0.0× / 0.4
Cable ops · Tasman Sealong running	0	90	3	670	0.0× / 0.2
Cable ops · Gulf of Guinea	0	81.3	2	256	— / 0
Cable ops · Arabian Sea	0	79.5	2	65	0.0× / 2.8
Nav aids · Andaman or Burma Sealong running	0	60	2	758	0.0× / 0.8
Derelicts · Arabian Sea	0	60	2	157	— / 0
Wrecks · Bay of Bengallong running	0	60	2	546	— / 0
Other · Coral Sea	0	60	2	264	0.0× / 0.2
Wrecks · Coral Sealong running	0	60	2	674	0.0× / 0.2
Cable ops · Gulf of Suez	0	60	2	38	0.0× / 0.2
Cable ops · Indian Ocean	0	60	2	309	0.0× / 0.6
Other · Indian Oceanlong running	0	60	2	617	0.0× / 0.6
Wrecks · Indian Oceanlong running	0	60	2	1,089	— / 0
Exercises · Ionian Sea	0	60	2	322	0.0× / 1
Other · North Sea	0	60	2	118	0.0× / 0.6
Structures · North Sealong running	0	60	2	466	— / 0
Cable ops · Persian Gulf	0	60	2	173	0.0× / 0.4
Volcanic · Philippine Sealong running	0	60	2	422	0.0× / 0.4
Wrecks · Philippine Sealong running	0	60	2	599	— / 0
Nav aids · Sea of Okhotsklong running	0	60	2	528	0.0× / 0.6
Volcanic · South Pacific Ocean	0	60	2	300	0.0× / 0.2
Wrecks · South Pacific Oceanlong running	0	60	2	441	— / 0
Wrecks · Tasman Sealong running	0	60	2	560	— / 0
Surveys · The Northwestern Passageslong running	0	60	2	405	— / 0
Ordnance · Tyrrhenian Sealong running	0	60	2	379	0.0× / 0.8
Wrecks · Tyrrhenian Sealong running	0	60	2	619	— / 0
Restricted · North Atlantic Ocean	0	55.4	1	85	0.0× / 0.4
Incidents · Bay of Bengal	0	53.7	1	52	0.0× / 0.6
Surveys · Sea of Okhotsk	0	34.6	1	187	0.0× / 0.2
Other · English Channel	0	30.7	1	150	0.0× / 0.2
Incidents · Adriatic Sea	0	30	1	64	0.0× / 0.2
Restricted · Alboran Sea	0	30	1	123	0.0× / 0.2
Other · Andaman or Burma Sea	0	30	1	57	— / 0
Surveys · Arabian Sealong running	0	30	1	689	0.0× / 0.8
Debris · Arctic Oceanlong running	0	30	1	1,074	— / 0
Other · Arctic Ocean	0	30	1	87	— / 0
Cable ops · Banda Sea	0	30	1	53	— / 0
Volcanic · Banda Sea	0	30	1	242	— / 0
Other · Bay of Bengallong running	0	30	1	396	— / 0
Restricted · Bay of Bengallong running	0	30	1	591	— / 0
Surveys · Bay of Bengal	0	30	1	46	0.0× / 0.4
Incidents · Bay of Biscay	0	30	1	58	— / 0
Surveys · Bering Sea	0	30	1	73	— / 0
Exercises · Black Sea	0	30	1	225	0.0× / 2.2
Ordnance · Black Sea	0	30	1	186	— / 0
Wrecks · Black Sea	0	30	1	123	— / 0
Other · Caribbean Sea	0	30	1	142	0.0× / 0.2
Restricted · Caribbean Sea	0	30	1	290	— / 0
Wrecks · Caribbean Sealong running	0	30	1	396	— / 0
Surveys · Chukchi Sealong running	0	30	1	955	— / 0

Cite: seahazards.com Sea Ledger, 2007-11, 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.