Sea Ledger, October 2004

2004-10-01 to 2004-10-31 · archive

issued: 270
warning-days in force: 6,675
in force at month end: 210
sea × type cells: 186

baseline: same month, previous 5 years (2003-10, 2002-10, 2001-10, 2000-10, 1999-10)

By type

type	issued	warning-days	in force at end
Exercises	74	920.2	21
Quakes	46	138.2	2
Incidents	31	725.4	29
Surveys	30	888.5	29
Cable ops	29	490.8	16
Nav aids	18	2,003.6	65
Wrecks	8	551.6	21
Derelicts	8	52.8	0
Containers	6	29.6	2
Missiles	5	62	2
Spills	5	112	1
Other	4	322.3	10
Restricted	2	68.9	2
Debris	2	40.9	1
Structures	1	75.7	3
Ordnance	1	48.8	2
War risk	0	93	3
Towing	0	51	1

By sea and type · 186 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Exercises · Laccadive Seasurge	10	33.4	1	37	2.4× / 4.2
Quakes · Japan Seasurge	10	30	0	—	50× / 0.2
Exercises · North Pacific Ocean	9	66.4	2	34	1.6× / 5.6
Exercises · Bay of Bengalsurge	8	40.4	0	—	3.6× / 2.2
Surveys · South Atlantic Oceansurge	8	24.7	0	—	2.7× / 3
Cable ops · North Atlantic Oceansurge	7	71.8	2	60	2.7× / 2.6
Exercises · Black Sea	7	54.7	0	—	1.1× / 6.6
Quakes · South Pacific Ocean	7	21.9	0	—	0.6× / 11.8
Surveys · Mediterranean Sea - Eastern Basinsurge	6	97.4	3	44	3.0× / 2
Exercises · North Atlantic Ocean	6	42.5	2	36	0.6× / 9.4
Quakes · North Pacific Ocean	6	18	0	—	0.8× / 7.6
Incidents · North Pacific Ocean	5	63.7	4	66	0.7× / 7.2
Missiles · North Pacific Ocean	5	62	2	63	0.9× / 5.4
Cable ops · South Atlantic Ocean	5	22	1	31	0.2× / 29.2
Exercises · South Pacific Oceansurge	5	17.9	1	28	4.2× / 1.2
Incidents · South Pacific Ocean	4	197.8	5	125	0.7× / 6
Incidents · Coral Sea	4	72.1	4	37	0.9× / 4.6
Cable ops · South China Seasurge	4	63.5	1	57	2.9× / 1.4
Exercises · South Atlantic Oceansurge	4	63.3	0	—	2.9× / 1.4
Incidents · North Atlantic Ocean	4	38.7	2	30	0.5× / 7.6
Quakes · South Atlantic Oceansurge	4	13.1	0	—	3.3× / 1.2
Quakes · Banda Seasurge	4	12	0	—	2.0× / 2
Quakes · Philippine Seasurge	4	12	0	—	2.2× / 1.8
Exercises · Arabian Sea	4	10.4	1	26	1.4× / 2.8
Nav aids · Arabian Seanew	3	179.5	6	110	new / 0
Wrecks · North Seanew	3	46.2	3	20	new / 0
Spills · North Atlantic Oceansurge	3	43	1	32	2.1× / 1.4
Cable ops · Mediterranean Sea - Eastern Basin	3	21.1	2	68	1.5× / 2
Derelicts · Mediterranean Sea - Eastern Basinsurge	3	18.9	0	—	7.5× / 0.4
Exercises · Persian Gulfsurge	3	18.3	2	34	2.5× / 1.2
Cable ops · Irish Sea and St. George's Channelsurge	3	16.9	1	28	2.1× / 1.4
Surveys · Celtic Sea	3	11.6	0	—	1.7× / 1.8
Containers · Celtic Seasurge	3	10.9	2	27	3.0× / 1
Quakes · Coral Seasurge	3	7.4	1	20	2.5× / 1.2
Nav aids · North Atlantic Ocean	2	102.4	4	195	0.7× / 2.8
Incidents · South Atlantic Ocean	2	75.6	3	61	0.4× / 4.6
Nav aids · English Channel	2	69.3	3	136	0.6× / 3.4
Exercises · Japan Sea	2	63.8	1	34	1.3× / 1.6
Nav aids · North Sea	2	32.3	1	45	0.2× / 8.6
Exercises · Tyrrhenian Sea	2	29.4	0	—	1.4× / 1.4
Incidents · Arabian Sea	2	25.9	2	14	2.0× / 1
Wrecks · Persian Gulf	2	23.2	2	11	5.0× / 0.4
Surveys · Ionian Sea	2	14.7	2	45	2.5× / 0.8
Containers · Coral Seanew	2	13.1	0	—	new / 0
Exercises · Gulf of Omannew	2	12.6	0	—	new / 0
Exercises · Red Sea	2	11	1	24	10× / 0.2
Exercises · Caribbean Seanew	2	8.3	0	—	new / 0
Debris · Celtic Seanew	2	6.9	0	—	new / 0
Quakes · Solomon Sea	2	6	0	—	0.9× / 2.2
Quakes · Southern Ocean	2	6	0	—	10× / 0.2
Nav aids · Coral Sea	1	131	5	132	0.3× / 3.4
Nav aids · South Pacific Ocean	1	111.6	3	191	0.4× / 2.6
Nav aids · Gulf of Suez	1	66	2	127	2.5× / 0.4
Exercises · Ionian Sea	1	63.3	2	306	0.5× / 2.2
Nav aids · Tasman Sea	1	62.8	2	110	2.5× / 0.4
Nav aids · Celtic Sea	1	62.1	2	114	0.5× / 2.2
Nav aids · Great Australian Bight	1	59.4	2	48	1.3× / 0.8
Cable ops · North Sea	1	58.5	2	117	0.3× / 3.2
Surveys · Persian Gulf	1	56.7	2	186	new / 0
Surveys · Arctic Ocean	1	44.5	2	297	new / 0
Exercises · Mediterranean Sea - Eastern Basin	1	44.5	0	—	0.3× / 3
Wrecks · South China Sea	1	41.9	2	64	5.0× / 0.2
Surveys · Sea of Okhotsk	1	41.1	1	47	new / 0
Other · North Sea	1	37.7	1	89	0.8× / 1.2
Exercises · Malacca Strait	1	34.3	1	33	1.7× / 0.6
Surveys · North Atlantic Ocean	1	33.1	2	100	1.3× / 0.8
Nav aids · Bass Strait	1	32.5	1	113	0.7× / 1.4
Other · Timor Sea	1	31	1	41	5.0× / 0.2
Cable ops · Gulf of Suez	1	26.6	1	38	new / 0
Restricted · Indian Ocean	1	25.6	0	—	new / 0
Wrecks · Malacca Strait	1	23.6	1	23	new / 0
Cable ops · Bay of Bengal	1	23.4	1	23	1.3× / 0.8
Incidents · Japan Sea	1	23.1	1	23	1.7× / 0.6
Incidents · Philippine Sea	1	22.9	1	66	0.2× / 4.4
Cable ops · Sea of Okhotsk	1	20.6	0	—	new / 0
Cable ops · Gulf of Mexico	1	20.1	1	20	new / 0
Incidents · Arafura Sea	1	19.9	1	19	2.5× / 0.4
Incidents · Mediterranean Sea - Eastern Basin	1	19.5	1	19	0.5× / 2
Spills · North Pacific Ocean	1	19	0	—	2.5× / 0.4
Incidents · Gulf of Guinea	1	18.6	1	18	new / 0
Incidents · Persian Gulf	1	18.4	1	40	5.0× / 0.2
Surveys · Bass Strait	1	18.1	1	18	2.5× / 0.4
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	18	0	—	2.5× / 0.4
Incidents · Tasman Sea	1	14.3	0	—	0.8× / 1.2
Structures · Persian Gulf	1	13.7	1	13	new / 0
Surveys · Tyrrhenian Sea	1	13.3	0	—	1.3× / 0.8
Wrecks · Coral Sea	1	12.9	0	—	5.0× / 0.2
Restricted · North Atlantic Ocean	1	12.3	1	12	5.0× / 0.2
Surveys · Gulf of Guinea	1	10.7	1	10	new / 0
Surveys · Japan Sea	1	10.4	1	10	2.5× / 0.4
Surveys · Mediterranean Sea - Western Basin	1	10.1	1	52	2.5× / 0.4
Surveys · Irish Sea and St. George's Channel	1	9.5	1	9	0.4× / 2.8
Exercises · Mediterranean Sea - Western Basin	1	9.4	0	—	0.6× / 1.6
Incidents · Ionian Sea	1	8.5	0	—	5.0× / 0.2
Exercises · Gulf of Aden	1	8.4	0	—	new / 0
Cable ops · Mediterranean Sea - Western Basin	1	7.4	0	—	5.0× / 0.2
Derelicts · South China Sea	1	6.8	0	—	new / 0
Derelicts · North Atlantic Ocean	1	6.2	0	—	0.5× / 2.2
Derelicts · Caribbean Sea	1	6.1	0	—	new / 0
Derelicts · North Pacific Ocean	1	6.1	0	—	0.7× / 1.4
Surveys · South Pacific Ocean	1	5.9	1	5	new / 0
Derelicts · Indian Ocean	1	5.7	0	—	1.7× / 0.6
Other · Indian Ocean	1	5.6	1	5	0.6× / 1.6
Containers · North Atlantic Ocean	1	5.6	0	—	0.6× / 1.6
Ordnance · Philippine Sea	1	5.3	1	5	5.0× / 0.2
Exercises · Adriatic Sea	1	5	0	—	0.2× / 5
Exercises · Sulu Sea	1	3.6	0	—	new / 0
Quakes · Aegean Sea	1	3	0	—	new / 0
Quakes · North Atlantic Ocean	1	3	0	—	0.6× / 1.6
Quakes · Savu Sea	1	3	0	—	new / 0
Quakes · South China Sea	1	2.2	1	2	1.3× / 0.8
Nav aids · Mediterranean Sea - Western Basin	1	2.1	0	—	2.5× / 0.4
Exercises · Sea of Okhotsk	1	1.6	0	—	5.0× / 0.2
Other · Inner Seas off the West Coast of Scotland	1	1	0	—	5.0× / 0.2
Nav aids · Bristol Channel	1	0.4	0	—	new / 0
Cable ops · Celtic Sea	1	0.2	0	—	5.0× / 0.2
Incidents · Celtic Sea	1	0.1	0	—	1.3× / 0.8
Incidents · Gulf of Oman	1	0.1	0	—	new / 0
Exercises · Aegean Sea	0	217	7	306	0.0× / 3
Nav aids · Bay of Bengallong running	0	217	7	396	0.0× / 0.8
Surveys · Baffin Baylong running	0	155	5	395	0.0× / 0.6
Nav aids · Andaman or Burma Sea	0	105.5	3	123	0.0× / 0.6
Surveys · Beaufort Sea	0	93	3	297	— / 0
Nav aids · Laccadive Sea	0	93	3	138	— / 0
Other · Persian Gulflong running	0	93	3	635	0.0× / 0.2
War risk · Persian Gulflong running	0	93	3	1,003	— / 0
Surveys · North Sea	0	89.7	1	198	0.0× / 4.4
Nav aids · Irish Sea and St. George's Channel	0	80.4	2	103	0.0× / 1
Wrecks · Arabian Sea	0	62.8	2	137	— / 0
Structures · Adriatic Sea	0	62	2	44	— / 0
Other · Coral Sea	0	62	2	128	0.0× / 0.6
Incidents · Indian Ocean	0	62	2	47	0.0× / 4.4
Nav aids · Ionian Sea	0	62	2	342	0.0× / 0.4
Wrecks · Irish Sea and St. George's Channel	0	62	2	55	— / 0
Wrecks · Mediterranean Sea - Eastern Basin	0	62	2	125	0.0× / 0.2
Nav aids · Mozambique Channel	0	62	2	180	0.0× / 0.6
Nav aids · North Pacific Ocean	0	62	2	93	0.0× / 0.8
Nav aids · Red Sea	0	62	2	90	0.0× / 0.2
Nav aids · South Atlantic Ocean	0	62	2	267	0.0× / 7.4
Cable ops · Timor Sea	0	62	2	141	— / 0
Exercises · Yellow Sea	0	59.2	0	—	— / 0
Towing · Black Sea	0	51	1	195	0.0× / 0.2
Nav aids · Inner Seas off the West Coast of Scotlandlong running	0	37.6	1	454	0.0× / 2
Cable ops · Arabian Sea	0	31	1	44	0.0× / 2.2
Nav aids · Arafura Sea	0	31	1	48	— / 0
Surveys · Balearic (Iberian Sea)long running	0	31	1	465	— / 0
Cable ops · Bass Strait	0	31	1	43	0.0× / 0.2
Wrecks · Bass Strait	0	31	1	184	— / 0
Wrecks · Bay of Bengal	0	31	1	158	— / 0
Nav aids · Bismarck Sea	0	31	1	79	— / 0
Other · Black Sea	0	31	1	195	0.0× / 0.2
Surveys · Greenland Sealong running	0	31	1	613	— / 0
Spills · Gulf of Mexico	0	31	0	—	0.0× / 1
Wrecks · Gulf of Mexico	0	31	1	34	— / 0
Ordnance · Gulf of Oman	0	31	1	124	— / 0
Nav aids · Indian Ocean	0	31	1	40	0.0× / 1.6
Wrecks · Laccadive Sea	0	31	1	110	— / 0
Nav aids · Malacca Strait	0	31	1	83	0.0× / 0.2
Nav aids · Mediterranean Sea - Eastern Basin	0	31	1	72	— / 0
Incidents · Mozambique Channel	0	31	1	33	0.0× / 0.2
Debris · North Pacific Ocean	0	31	1	137	— / 0
Restricted · North Pacific Ocean	0	31	1	150	— / 0
Nav aids · Persian Gulflong running	0	31	1	1,062	0.0× / 1
Nav aids · Philippine Sea	0	31	1	93	— / 0
Wrecks · Singapore Strait	0	31	1	160	— / 0
Nav aids · South China Sealong running	0	31	1	501	— / 0
Wrecks · South Pacific Ocean	0	31	1	154	— / 0
Other · Tasman Sea	0	31	1	144	0.0× / 0.4
Wrecks · Yellow Sea	0	31	1	137	— / 0
Other · Mediterranean Sea - Eastern Basin	0	30	0	—	0.0× / 0.4
Surveys · Philippine Sea	0	30	0	—	0.0× / 0.6
Surveys · Gulf of Mexico	0	20	0	—	— / 0
Surveys · Bay of Bengal	0	16	0	—	— / 0
Surveys · Black Sea	0	13	0	—	0.0× / 0.2
Ordnance · Bay of Bengal	0	12.5	0	—	— / 0
Cable ops · Black Sea	0	8	0	—	0.0× / 0.6
Surveys · Gulf of Suez	0	8	0	—	0.0× / 0.2
Cable ops · Labrador Sea	0	6.7	0	—	— / 0
Incidents · Bay of Bengal	0	6.6	0	—	0.0× / 0.6
Incidents · Bay of Biscay	0	6.6	0	—	— / 0
Derelicts · Gulf of Mexico	0	3	0	—	0.0× / 0.4
Debris · Philippine Sea	0	3	0	—	0.0× / 0.4
Exercises · South China Sea	0	1.5	0	—	0.0× / 0.2
Spills · Bering Sea	0	1	0	—	0.0× / 0.2
Nav aids · Tyrrhenian Sea	0	0.7	0	—	0.0× / 4.8
Quakes · Indian Ocean	0	0.6	0	—	0.0× / 1.8

Cite: seahazards.com Sea Ledger, 2004-10, 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.