Sea Ledger, December 2006

2006-12-01 to 2006-12-31 · archive

issued: 344
warning-days in force: 13,550
in force at month end: 444
sea × type cells: 240

baseline: same month, previous 5 years (2005-12, 2004-12, 2003-12, 2002-12, 2001-12)

By type

type	issued	warning-days	in force at end
Incidents	61	1,446.5	51
Nav aids	55	4,573.1	161
Exercises	50	862.1	14
Cable ops	46	1,027.3	38
Quakes	41	147.6	4
Surveys	17	2,202.1	66
Derelicts	16	143.4	8
Icebergs	12	75.4	0
Other	10	896.2	28
Containers	8	45.7	2
Spills	8	67	5
Missiles	6	62	2
Debris	5	85.1	2
Wrecks	4	1,193.6	40
Volcanic	2	136.9	4
Ordnance	1	99.2	3
Piracy	1	85.7	3
Storms	1	8.7	1
Restricted	0	217.5	7
Towing	0	51	1
Structures	0	124	4

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	21	144.8	5	206	1.4× / 15.6
Quakes · South Pacific Ocean	14	49.4	1	32	1.2× / 12
Incidents · South Pacific Ocean	11	164.7	5	74	1.4× / 7.8
Exercises · Laccadive Sea	10	91.5	1	40	1.1× / 9
Nav aids · Arabian Seasurge	9	295.9	13	356	5.6× / 1.6
Exercises · North Atlantic Ocean	9	73.7	0	—	1.0× / 9.2
Incidents · South China Sea	8	94.6	5	55	1.5× / 5.4
Exercises · North Pacific Ocean	7	75.4	2	35	1.1× / 6.4
Exercises · Bay of Bengal	7	53.4	2	46	1.0× / 6.8
Exercises · South Pacific Oceansurge	7	35.9	0	—	2.9× / 2.4
Quakes · North Pacific Ocean	7	19.4	1	28	1.4× / 5.2
Incidents · North Pacific Ocean	6	234.3	7	61	0.6× / 11
Cable ops · Mediterranean Sea - Eastern Basinsurge	6	143.6	5	53	3.3× / 1.8
Nav aids · North Sea	6	115.4	5	73	1.4× / 4.2
Incidents · South Atlantic Ocean	6	86.3	4	60	1.3× / 4.6
Missiles · North Pacific Ocean	6	62	2	63	1.3× / 4.6
Derelicts · North Pacific Oceansurge	6	42.7	1	29	4.3× / 1.4
Incidents · North Atlantic Ocean	5	112.6	4	59	0.9× / 5.6
Spills · Gulf of Mexico	5	43	3	44	1.7× / 3
Icebergs · Southern Oceansurge	5	35.8	0	—	3.6× / 1.4
Icebergs · South Pacific Oceansurge	5	27.8	0	—	4.2× / 1.2
Nav aids · Coral Sealong running	4	307.2	11	910	1.3× / 3.2
Nav aids · Mediterranean Sea - Western Basin	4	141	6	254	1.3× / 3.2
Incidents · Philippine Sea	4	118.9	5	64	0.6× / 6.8
Surveys · South Atlantic Ocean	4	58.3	2	148	1.3× / 3
Quakes · South China Seasurge	4	12	0	—	10× / 0.4
Incidents · Southern Oceannew	4	4.7	1	29	new / 0
Wrecks · North Sealong running	3	159.7	6	460	1.4× / 2.2
Nav aids · Laccadive Seasurge	3	153.5	6	361	5.0× / 0.6
Nav aids · Mediterranean Sea - Eastern Basinsurgelong running	3	111.7	4	863	5.0× / 0.6
Surveys · North Seasurge	3	64.2	2	237	2.1× / 1.4
Nav aids · Irish Sea and St. George's Channelsurge	3	60.3	2	297	2.1× / 1.4
Incidents · Laccadive Seasurge	3	53.6	3	30	7.5× / 0.4
Derelicts · Indian Oceansurge	3	34.1	1	32	7.5× / 0.4
Derelicts · South Atlantic Ocean	3	34.1	3	27	1.4× / 2.2
Derelicts · North Atlantic Oceansurge	3	25.3	2	24	2.1× / 1.4
Containers · North Atlantic Oceansurge	3	19.4	0	—	2.5× / 1.2
Cable ops · North Atlantic Oceansurge	3	10	1	23	3.0× / 1
Exercises · Arabian Sea	3	8	1	23	0.9× / 3.4
Incidents · Tasman Sea	3	4.6	1	26	1.7× / 1.8
Nav aids · English Channellong running	2	139	4	441	0.5× / 4
Incidents · Indian Ocean	2	138.9	3	68	0.9× / 2.2
Nav aids · Inner Seas off the West Coast of Scotland	2	125.2	4	206	1.4× / 1.4
Nav aids · Tyrrhenian Sealong running	2	103.4	4	773	1.1× / 1.8
Incidents · Bay of Bengal	2	71.3	2	57	2.0× / 1
Exercises · Japan Sea	2	68.4	2	37	3.3× / 0.6
Exercises · Yellow Sea	2	66.8	1	37	2.0× / 1
Surveys · Indian Ocean	2	62.9	1	88	1.3× / 1.6
Incidents · Mozambique Channel	2	52.4	2	40	5.0× / 0.4
Nav aids · Bristol Channel	2	40.5	1	25	10× / 0.2
Nav aids · Gulf of Sueznew	2	34.9	2	17	new / 0
Nav aids · South Atlantic Ocean	2	34.3	2	57	0.4× / 4.6
Surveys · Laccadive Seanew	2	33.4	0	—	new / 0
Nav aids · Celtic Sea	2	32.6	1	100	1.1× / 1.8
Quakes · Bay of Bengal	2	23.4	1	20	0.4× / 5.4
Cable ops · Gulf of Guinea	2	13.4	1	19	3.3× / 0.6
Icebergs · South Atlantic Ocean	2	11.8	0	—	0.3× / 6.8
Containers · South China Sea	2	9.6	0	—	2.5× / 0.8
Cable ops · Timor Sea	2	8.5	2	4	10× / 0.2
Debris · South Atlantic Ocean	2	6.9	0	—	10× / 0.2
Nav aids · Philippine Seanew	2	6.2	1	13	new / 0
Quakes · Celebes Sea	2	6	0	—	3.3× / 0.6
Quakes · Indian Ocean	2	6	0	—	0.3× / 7
Spills · North Pacific Ocean	2	5	2	3	2.5× / 0.8
Nav aids · Bay of Bengallong running	1	302.3	10	566	0.8× / 1.2
Nav aids · Caribbean Sealong running	1	291.5	10	566	5.0× / 0.2
Nav aids · North Pacific Oceanlong running	1	159.8	6	541	new / 0
Other · Persian Gulflong running	1	148.1	5	445	2.5× / 0.4
Nav aids · North Atlantic Ocean	1	104.3	4	348	0.4× / 2.6
Other · South Atlantic Ocean	1	87.1	3	92	1.3× / 0.8
Cable ops · Black Sea	1	74.4	3	95	1.3× / 0.8
Surveys · North Atlantic Ocean	1	68.6	2	270	0.5× / 2
Nav aids · Red Sea	1	67.2	3	47	5.0× / 0.2
Surveys · Persian Gulf	1	62	2	243	new / 0
Volcanic · Philippine Sea	1	62	2	88	5.0× / 0.2
Incidents · Persian Gulf	1	60.2	2	43	new / 0
Volcanic · South Pacific Ocean	1	43.9	1	44	new / 0
Cable ops · Java Sea	1	37.6	2	53	new / 0
Other · Mediterranean Sea - Western Basin	1	35.9	1	54	5.0× / 0.2
Surveys · Sea of Marmara	1	35.2	1	205	new / 0
Incidents · Mediterranean Sea - Eastern Basin	1	34.2	1	50	0.4× / 2.8
Cable ops · Arabian Sea	1	31	1	38	0.4× / 2.6
Cable ops · Laccadive Sea	1	31	1	61	new / 0
Cable ops · Malacca Strait	1	30.9	1	55	new / 0
Cable ops · Tyrrhenian Sea	1	30.5	1	30	5.0× / 0.2
Cable ops · Gulf of Suez	1	30.3	1	30	5.0× / 0.2
Incidents · Sulu Sea	1	30.3	1	30	new / 0
Debris · North Pacific Ocean	1	27.7	0	—	new / 0
Incidents · Coral Sea	1	26.9	0	—	0.6× / 1.8
Exercises · Mediterranean Sea - Western Basin	1	26.3	0	—	new / 0
Cable ops · Mediterranean Sea - Western Basin	1	24.5	1	24	new / 0
Other · Irish Sea and St. George's Channel	1	24.3	1	24	2.5× / 0.4
Piracy · Singapore Strait	1	23.7	1	23	new / 0
Other · Black Sea	1	22.6	1	22	new / 0
Cable ops · Bristol Channel	1	20.8	1	20	new / 0
Surveys · Adriatic Sea	1	20.6	0	—	new / 0
Other · Sea of Marmara	1	19.3	1	19	new / 0
Cable ops · Andaman or Burma Sea	1	17.4	1	17	new / 0
Other · Gulf of Thailand	1	17.4	1	17	new / 0
Surveys · Mediterranean Sea - Eastern Basin	1	16.3	1	16	1.0× / 1
Incidents · North Sea	1	15.6	1	15	new / 0
Other · Mediterranean Sea - Eastern Basin	1	15.4	0	—	1.7× / 0.6
Debris · North Atlantic Ocean	1	15.2	1	15	1.3× / 0.8
Spills · Bering Sea	1	14	0	—	5.0× / 0.2
Nav aids · Singapore Strait	1	13.6	1	13	5.0× / 0.2
Nav aids · Black Sea	1	12.5	0	—	new / 0
Other · North Pacific Ocean	1	12.4	1	12	1.0× / 1
Containers · North Pacific Ocean	1	11.9	0	—	0.8× / 1.2
Wrecks · Southern Ocean	1	10.9	1	10	new / 0
Surveys · Malacca Strait	1	10.6	0	—	new / 0
Storms · Indian Ocean	1	8.7	1	8	new / 0
Cable ops · Irish Sea and St. George's Channel	1	8.1	0	—	2.5× / 0.4
Exercises · Indian Ocean	1	6.7	0	—	1.7× / 0.6
Ordnance · Philippine Sea	1	6.2	0	—	2.5× / 0.4
Derelicts · South China Sea	1	6.2	1	6	1.7× / 0.6
Debris · Arabian Sea	1	4.3	0	—	new / 0
Quakes · Eastern China Sea	1	3	0	—	1.7× / 0.6
Quakes · Flores Sea	1	3	0	—	new / 0
Quakes · Java Sea	1	3	0	—	new / 0
Quakes · Malacca Strait	1	3	0	—	new / 0
Quakes · Philippine Sea	1	3	0	—	0.5× / 2.2
Quakes · Sea of Okhotsk	1	3	0	—	new / 0
Quakes · Solomon Sea	1	3	0	—	0.8× / 1.2
Quakes · South Atlantic Ocean	1	3	0	—	0.7× / 1.4
Quakes · Timor Sea	1	3	0	—	new / 0
Containers · Celtic Sea	1	2.6	1	2	5.0× / 0.2
Containers · North Sea	1	2.2	1	2	new / 0
Exercises · Andaman or Burma Sea	1	1.8	0	—	1.7× / 0.6
Quakes · Arabian Sea	1	1.6	1	1	new / 0
Other · English Channel	1	0.9	0	—	1.7× / 0.6
Cable ops · Indian Ocean	1	0.5	0	—	new / 0
Surveys · Beaufort Sealong running	0	713	23	1,088	— / 0
Nav aids · South Pacific Ocean	0	620	20	360	0.0× / 1.8
Surveys · Arctic Oceanlong running	0	372	12	1,088	— / 0
Exercises · Aegean Sealong running	0	273.6	4	369	0.0× / 5
Nav aids · Indian Ocean	0	217	7	230	0.0× / 0.8
Wrecks · Mediterranean Sea - Eastern Basinlong running	0	186	6	916	— / 0
Surveys · Baffin Baylong running	0	155	5	1,186	— / 0
Nav aids · Bering Sea	0	124	4	165	— / 0
Nav aids · Mozambique Channellong running	0	124	4	628	0.0× / 0.2
Nav aids · Andaman or Burma Sealong running	0	122.8	3	424	0.0× / 0.4
Cable ops · Bay of Bengal	0	106	3	40	0.0× / 1.8
Other · South Pacific Ocean	0	98.7	3	188	0.0× / 0.4
Nav aids · Arafura Sea	0	93	3	146	0.0× / 0.2
Nav aids · Gulf of Mexicolong running	0	93	3	629	0.0× / 0.2
Surveys · Laptev Sea	0	93	3	222	— / 0
Wrecks · Persian Gulf	0	93	3	357	0.0× / 0.4
Nav aids · Sea of Okhotsk	0	93	3	194	— / 0
Wrecks · South China Sealong running	0	93	3	801	0.0× / 0.2
Other · South China Sea	0	80	2	200	— / 0
Other · Arabian Sea	0	62	2	319	0.0× / 0.6
Nav aids · Bass Strait	0	62	2	104	0.0× / 0.6
Wrecks · Bay of Bengal	0	62	2	212	— / 0
Wrecks · Coral Sea	0	62	2	340	0.0× / 0.2
Nav aids · Great Australian Bight	0	62	2	192	0.0× / 0.6
Nav aids · Gulf of Alaska	0	62	2	42	— / 0
Incidents · Gulf of Guinea	0	62	2	72	0.0× / 0.6
Nav aids · Persian Gulf	0	62	2	134	0.0× / 0.4
Piracy · Persian Gulflong running	0	62	2	691	— / 0
Cable ops · Tasman Sea	0	62	2	336	0.0× / 0.2
Nav aids · Tasman Sea	0	62	2	323	0.0× / 1
Wrecks · Tasman Sea	0	62	2	226	— / 0
Surveys · The Northwestern Passages	0	62	2	71	— / 0
Ordnance · Tyrrhenian Sea	0	62	2	45	— / 0
Wrecks · Tyrrhenian Sea	0	62	2	285	— / 0
Exercises · Ionian Sealong running	0	61.9	1	369	0.0× / 2.2
Surveys · Arabian Sea	0	58	1	355	0.0× / 0.2
Surveys · Gulf of Suez	0	47	1	166	0.0× / 0.2
Restricted · Alboran Sea	0	31	1	34	— / 0
Ordnance · Arabian Sea	0	31	1	358	0.0× / 0.2
Wrecks · Arabian Sea	0	31	1	253	0.0× / 0.4
Debris · Arctic Oceanlong running	0	31	1	740	0.0× / 0.2
Other · Bay of Bengal	0	31	1	62	— / 0
Restricted · Bay of Bengal	0	31	1	257	— / 0
Other · Caribbean Sea	0	31	1	34	— / 0
Surveys · Caribbean Sea	0	31	1	55	— / 0
Wrecks · Caribbean Sea	0	31	1	62	— / 0
Surveys · Chukchi Sealong running	0	31	1	621	— / 0
Other · Eastern China Sea	0	31	1	279	— / 0
Wrecks · Eastern China Sea	0	31	1	195	— / 0
Surveys · Greenland Sealong running	0	31	1	1,404	— / 0
Wrecks · Gulf of Guinea	0	31	1	79	— / 0
Other · Gulf of Mexicolong running	0	31	1	405	— / 0
Cable ops · Gulf of Oman	0	31	1	41	0.0× / 0.2
Incidents · Gulf of Oman	0	31	1	45	0.0× / 0.2
Other · Gulf of Suez	0	31	1	303	— / 0
Other · Indian Ocean	0	31	1	283	0.0× / 0.6
Restricted · Indian Oceanlong running	0	31	1	616	— / 0
Wrecks · Indian Oceanlong running	0	31	1	755	0.0× / 0.4
Nav aids · Ionian Sea	0	31	1	248	0.0× / 0.4
Wrecks · Irish Sea and St. George's Channellong running	0	31	1	843	— / 0
Nav aids · Malacca Straitlong running	0	31	1	458	— / 0
Other · Malacca Strait	0	31	1	46	— / 0
Wrecks · Malacca Strait	0	31	1	278	— / 0
Restricted · Mediterranean Sea - Eastern Basin	0	31	1	208	— / 0
Structures · Mediterranean Sea - Eastern Basin	0	31	1	192	— / 0
Wrecks · North Atlantic Ocean	0	31	1	332	0.0× / 0.2
Restricted · North Pacific Ocean	0	31	1	223	— / 0
Surveys · North Pacific Oceanlong running	0	31	1	517	0.0× / 0.2
Volcanic · North Pacific Ocean	0	31	1	358	— / 0

Cite: seahazards.com Sea Ledger, 2006-12, 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.