Sea Ledger, December 2004

2004-12-01 to 2004-12-31 · archive

issued: 330
warning-days in force: 7,439
in force at month end: 243
sea × type cells: 182

baseline: same month, previous 5 years (2003-12, 2002-12, 2001-12, 2000-12, 1999-12)

By type

type	issued	warning-days	in force at end
Quakes	111	319.9	13
Exercises	57	615.9	15
Incidents	33	1,050.5	36
Nav aids	30	2,143.1	74
Cable ops	23	627.9	20
Surveys	18	698.2	22
Spills	11	176	1
Other	10	556.1	20
Wrecks	9	779.3	26
Containers	8	45.3	3
Derelicts	7	42.3	0
Icebergs	5	16.6	0
Missiles	3	62	2
Towing	2	36.8	1
Ordnance	1	39.8	2
Restricted	1	33.2	1
Debris	1	41.2	2
War risk	0	93	3
Structures	0	62	2

By sea and type · 182 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Quakes · Indian Oceansurge	28	79.6	3	5	13× / 2.2
Quakes · Bay of Bengalsurge	26	71.6	3	5	130× / 0.2
Quakes · Andaman or Burma Seanew	20	56.9	5	5	new / 0
Quakes · South Pacific Ocean	17	51.4	0	—	1.6× / 11
Exercises · Black Seasurge	9	76.6	0	—	5.6× / 1.6
Exercises · North Atlantic Ocean	9	30.2	1	35	1.1× / 8.6
Cable ops · South Atlantic Ocean	8	90.6	1	54	0.3× / 28.8
Exercises · North Pacific Ocean	7	24.8	1	22	1.0× / 7.2
Surveys · South Atlantic Oceansurge	7	24.7	0	—	2.7× / 2.6
Quakes · North Pacific Ocean	7	22	1	33	1.4× / 5
Spills · Gulf of Mexicosurge	6	83	1	29	3.3× / 1.8
Incidents · South Pacific Ocean	5	159.3	4	186	0.7× / 6.8
Incidents · North Pacific Ocean	5	125.2	4	72	0.6× / 8.8
Incidents · North Atlantic Ocean	5	106.6	6	68	0.7× / 6.8
Nav aids · Inner Seas off the West Coast of Scotlandsurgelong running	5	37	1	515	3.6× / 1.4
Incidents · South Atlantic Ocean	4	159	7	50	0.8× / 5
Cable ops · Mediterranean Sea - Eastern Basinnew	4	81.9	2	53	new / 0
Spills · North Atlantic Ocean	4	79	0	—	1.4× / 2.8
Exercises · Laccadive Sea	4	32.7	0	—	0.8× / 5
Exercises · Bay of Bengal	4	27.7	0	—	0.9× / 4.6
Containers · North Pacific Oceansurge	4	25.5	1	15	20× / 0.2
Incidents · South China Sea	4	22.4	2	17	0.8× / 5
Icebergs · South Pacific Oceansurge	4	10.2	0	—	10× / 0.4
Wrecks · North Sea	3	125	4	81	1.9× / 1.6
Nav aids · English Channel	3	104	3	197	0.4× / 7
Missiles · North Pacific Ocean	3	62	2	33	0.6× / 5.4
Exercises · Arctic Oceannew	3	24.7	0	—	new / 0
Exercises · Mediterranean Sea - Eastern Basin	3	24.7	1	59	1.7× / 1.8
Exercises · Persian Gulfsurge	3	18.5	1	28	15× / 0.2
Nav aids · Mediterranean Sea - Western Basin	3	13.7	2	10	1.3× / 2.4
Exercises · Gulf of Omannew	3	12.5	2	18	new / 0
Exercises · Yellow Seanew	3	12.1	2	15	new / 0
Incidents · Tasman Seasurge	3	10.1	2	8	2.1× / 1.4
Quakes · Bismarck Sea	3	9	0	—	1.3× / 2.4
Quakes · Caribbean Seasurge	3	9	0	—	3.8× / 0.8
Nav aids · Coral Sea	2	217.6	7	193	0.8× / 2.6
Nav aids · Arabian Sea	2	169.8	7	171	5.0× / 0.4
Nav aids · South Pacific Ocean	2	92.3	3	252	1.4× / 1.4
Nav aids · Celtic Sea	2	58.7	2	55	0.5× / 4.2
Other · North Pacific Ocean	2	51	3	41	3.3× / 0.6
Nav aids · Tyrrhenian Sea	2	43.9	3	43	0.8× / 2.6
Nav aids · Indian Ocean	2	40.5	2	101	10× / 0.2
Surveys · Philippine Sea	2	26.6	0	—	3.3× / 0.6
Cable ops · Gulf of Guinea	2	25.9	1	23	5.0× / 0.4
Wrecks · Indian Oceannew	2	25.4	1	25	new / 0
Cable ops · Irish Sea and St. George's Channel	2	16.3	1	13	2.5× / 0.8
Surveys · Gulf of Mexiconew	2	13.8	1	25	new / 0
Derelicts · North Pacific Ocean	2	12.5	0	—	1.7× / 1.2
Derelicts · South Pacific Ocean	2	8.4	0	—	5.0× / 0.4
Containers · North Atlantic Ocean	2	7	2	6	1.4× / 1.4
Towing · Sulu Seanew	2	6.8	1	6	new / 0
Quakes · Philippine Sea	2	5.4	1	5	1.3× / 1.6
Exercises · Arabian Sea	2	4.6	0	—	0.8× / 2.4
Exercises · Andaman or Burma Sea	2	4.3	0	—	10× / 0.2
Other · North Atlantic Ocean	2	4	0	—	0.8× / 2.4
Other · English Channel	2	3.8	1	20	5.0× / 0.4
Incidents · Mediterranean Sea - Eastern Basin	2	1.1	0	—	1.0× / 2
Cable ops · Arabian Sea	1	118.2	4	105	0.5× / 2.2
Other · Persian Gulflong running	1	110.4	4	696	2.5× / 0.4
Incidents · Coral Sea	1	105.5	3	75	0.3× / 3.2
Nav aids · Great Australian Bight	1	93	3	109	0.8× / 1.2
Wrecks · Arabian Sea	1	92.6	3	198	5.0× / 0.2
Wrecks · Persian Gulf	1	73.6	3	72	5.0× / 0.2
Exercises · Ionian Sealong running	1	65.2	1	367	0.5× / 2
Nav aids · South Atlantic Ocean	1	64.3	2	328	0.2× / 5.8
Nav aids · Irish Sea and St. George's Channel	1	63	2	164	1.0× / 1
Cable ops · Timor Sea	1	62.4	3	202	new / 0
Wrecks · Yellow Sea	1	59.7	2	198	new / 0
Incidents · Indian Ocean	1	51.2	1	59	0.3× / 3
Other · Timor Sea	1	49.1	2	46	new / 0
Surveys · Arabian Sea	1	48.1	1	34	new / 0
Incidents · Gulf of Guinea	1	39.6	2	79	2.5× / 0.4
Nav aids · North Sea	1	39	1	58	0.1× / 7
Nav aids · Mediterranean Sea - Eastern Basin	1	34	1	133	2.5× / 0.4
Surveys · Ionian Sea	1	32.2	1	59	5.0× / 0.2
Other · North Sea	1	29	1	28	1.0× / 1
Surveys · Mediterranean Sea - Eastern Basin	1	22.3	1	43	0.8× / 1.2
Exercises · Norwegian Sea	1	21.2	0	—	new / 0
Other · Arabian Sea	1	17.4	1	17	new / 0
Cable ops · Adriatic Sea	1	16.5	1	16	5.0× / 0.2
Surveys · Indian Ocean	1	15.1	1	15	new / 0
Nav aids · Caribbean Sea	1	14.2	1	14	new / 0
Spills · Bering Sea	1	14	0	—	new / 0
Cable ops · Bay of Bengal	1	13.4	1	13	1.7× / 0.6
Nav aids · Gulf of Aqaba	1	13.4	1	13	new / 0
Surveys · Gulf of Oman	1	13.4	1	13	new / 0
Cable ops · Tyrrhenian Sea	1	12.4	0	—	new / 0
Cable ops · Black Sea	1	11.5	1	11	2.5× / 0.4
Cable ops · Gulf of Suez	1	10.6	1	34	new / 0
Debris · Arctic Ocean	1	10.2	1	10	new / 0
Ordnance · Tasman Sea	1	8.8	1	8	new / 0
Derelicts · South China Sea	1	6.6	0	—	1.0× / 1
Containers · Celtic Sea	1	6.4	0	—	1.3× / 0.8
Derelicts · Mediterranean Sea - Eastern Basin	1	6.4	0	—	0.6× / 1.6
Icebergs · South Atlantic Ocean	1	6.4	0	—	0.1× / 6.6
Containers · Tasman Sea	1	6.4	0	—	5.0× / 0.2
Incidents · Java Sea	1	6.2	0	—	new / 0
Exercises · South Pacific Ocean	1	5.5	0	—	0.4× / 2.6
Quakes · Banda Sea	1	3	0	—	1.3× / 0.8
Quakes · Bering Sea	1	3	0	—	2.5× / 0.4
Quakes · Celebes Sea	1	3	0	—	2.5× / 0.4
Quakes · Coral Sea	1	3	0	—	0.3× / 3.2
Quakes · Japan Sea	1	3	0	—	5.0× / 0.2
Exercises · Japan Sea	1	2.6	1	2	5.0× / 0.2
Surveys · Black Sea	1	2.5	0	—	new / 0
Exercises · Malacca Strait	1	2.5	1	2	1.7× / 0.6
Incidents · Caribbean Sea	1	2.4	1	2	5.0× / 0.2
Derelicts · South Atlantic Ocean	1	2.4	0	—	0.8× / 1.2
Restricted · North Atlantic Ocean	1	2.2	0	—	5.0× / 0.2
Surveys · North Pacific Ocean	1	0.6	1	0	new / 0
Wrecks · Bay of Biscay	1	0	0	—	2.5× / 0.4
Exercises · Aegean Sealong running	0	215.8	4	367	0.0× / 3.4
Nav aids · Bay of Bengallong running	0	195.6	6	457	0.0× / 0.6
Surveys · Baffin Baylong running	0	155	5	456	— / 0
Nav aids · Andaman or Burma Sea	0	93	3	184	0.0× / 0.6
Surveys · Beaufort Sea	0	93	3	358	— / 0
Nav aids · Gulf of Suez	0	93	3	188	— / 0
War risk · Persian Gulflong running	0	93	3	1,064	— / 0
Nav aids · Tasman Sea	0	93	3	171	0.0× / 1.8
Nav aids · Laccadive Sea	0	71.6	2	199	0.0× / 0.6
Nav aids · Mozambique Channel	0	64.5	2	241	0.0× / 0.6
Surveys · Arctic Ocean	0	62	2	358	— / 0
Other · Coral Sea	0	62	2	189	0.0× / 0.2
Wrecks · Irish Sea and St. George's Channel	0	62	2	116	— / 0
Wrecks · Mediterranean Sea - Eastern Basin	0	62	2	186	— / 0
Nav aids · North Atlantic Ocean	0	62	2	256	0.0× / 3.4
Nav aids · North Pacific Ocean	0	62	2	154	0.0× / 0.2
Surveys · Persian Gulf	0	62	2	247	— / 0
Nav aids · Red Sea	0	62	2	151	0.0× / 0.2
Wrecks · South China Sea	0	62	2	125	— / 0
Other · Tasman Sea	0	62	2	205	0.0× / 1.4
Incidents · Arabian Sea	0	59.1	0	—	0.0× / 1.4
Incidents · Philippine Sea	0	50.7	1	71	0.0× / 5.8
Other · Japan Sea	0	39.4	0	—	0.0× / 1.6
Other · Adriatic Sea	0	31	1	47	— / 0
Incidents · Adriatic Sea	0	31	1	40	0.0× / 0.8
Structures · Adriatic Sea	0	31	1	105	— / 0
Cable ops · Arafura Sea	0	31	1	32	— / 0
Nav aids · Arafura Sea	0	31	1	109	— / 0
Incidents · Arafura Sea	0	31	1	49	0.0× / 0.6
Surveys · Balearic (Iberian Sea)long running	0	31	1	526	— / 0
Cable ops · Bass Strait	0	31	1	104	0.0× / 0.4
Nav aids · Bass Strait	0	31	1	174	0.0× / 1.2
Wrecks · Bass Strait	0	31	1	245	— / 0
Surveys · Bay of Bengal	0	31	1	59	— / 0
Wrecks · Bay of Bengal	0	31	1	219	— / 0
Nav aids · Bismarck Sea	0	31	1	140	— / 0
Other · Black Sea	0	31	1	256	— / 0
Surveys · Greenland Sealong running	0	31	1	674	— / 0
Cable ops · Gulf of Mexico	0	31	1	55	0.0× / 0.2
Wrecks · Gulf of Mexico	0	31	1	95	0.0× / 0.2
Ordnance · Gulf of Oman	0	31	1	185	— / 0
Other · Indian Ocean	0	31	1	66	0.0× / 0.6
Nav aids · Ionian Sealong running	0	31	1	403	0.0× / 0.4
Wrecks · Laccadive Sea	0	31	1	171	— / 0
Incidents · Ligurian Sea	0	31	1	36	— / 0
Nav aids · Malacca Strait	0	31	1	144	0.0× / 0.4
Wrecks · Malacca Strait	0	31	1	84	0.0× / 0.4
Debris · North Pacific Ocean	0	31	1	198	— / 0
Restricted · North Pacific Ocean	0	31	1	211	— / 0
Nav aids · Persian Gulflong running	0	31	1	1,123	0.0× / 0.6
Structures · Persian Gulf	0	31	1	74	— / 0
Nav aids · Philippine Sea	0	31	1	154	— / 0
Wrecks · Singapore Strait	0	31	1	221	— / 0
Cable ops · South China Sea	0	31	1	46	0.0× / 0.6
Nav aids · South China Sealong running	0	31	1	562	0.0× / 0.2
Other · South Pacific Ocean	0	31	1	52	0.0× / 0.4
Wrecks · South Pacific Ocean	0	31	1	215	0.0× / 0.4
Cable ops · North Sea	0	30.4	0	—	0.0× / 3.6
Towing · Black Sea	0	30	0	—	— / 0
Incidents · Persian Gulf	0	19.7	0	—	0.0× / 0.2
Incidents · Southern Ocean	0	19.7	0	—	— / 0
Incidents · Tyrrhenian Sea	0	19.7	0	—	0.0× / 0.2
Surveys · Alboran Sea	0	15	0	—	— / 0
Cable ops · Ionian Sea	0	13.8	0	—	0.0× / 1
Surveys · South Pacific Ocean	0	12.1	0	—	0.0× / 0.2
Exercises · Irish Sea and St. George's Channel	0	9.7	0	—	— / 0
Surveys · Gulf of Guinea	0	6.7	0	—	0.0× / 0.2
Derelicts · North Atlantic Ocean	0	6	0	—	0.0× / 3.2
Other · Mediterranean Sea - Eastern Basin	0	4	0	—	0.0× / 0.6
Surveys · Bass Strait	0	0.1	0	—	— / 0
Surveys · Mediterranean Sea - Western Basin	0	0	0	—	0.0× / 0.6

Cite: seahazards.com Sea Ledger, 2004-12, 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.