Sea Ledger, August 2004

2004-08-01 to 2004-08-31 · archive

issued: 259
warning-days in force: 5,982
in force at month end: 203
sea × type cells: 169

baseline: same month, previous 5 years (2003-08, 2002-08, 2001-08, 2000-08, 1999-08)

By type

type	issued	warning-days	in force at end
Exercises	69	856.5	34
Nav aids	51	1,746.5	63
Incidents	29	674.7	22
Quakes	27	80.1	3
Derelicts	13	97	4
Cable ops	13	511.2	14
Other	13	391.6	12
Surveys	12	754.9	21
Spills	7	104	4
Wrecks	6	275	12
Missiles	5	62	2
Ordnance	5	80.6	2
Debris	3	45.3	1
Towing	2	37.5	1
Containers	2	12.1	0
Restricted	1	119.5	3
Icebergs	1	6.5	1
Mines	0	3	0
War risk	0	93	3
Volcanic	0	31	1

By sea and type · 169 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Exercises · North Atlantic Ocean	11	56.9	2	55	1.1× / 10.2
Exercises · Black Sea	10	84.1	2	26	1.4× / 7
Exercises · North Pacific Ocean	10	42.7	4	34	1.5× / 6.8
Exercises · Laccadive Seasurge	9	45.2	2	31	2.5× / 3.6
Nav aids · South Pacific Oceansurge	8	141	4	130	3.3× / 2.4
Nav aids · South Atlantic Oceanlong running	6	88.8	3	431	1.0× / 6
Exercises · Bay of Bengalsurge	6	18.2	2	28	3.8× / 1.6
Quakes · North Pacific Ocean	6	16.5	1	27	0.9× / 6.8
Nav aids · Arabian Seasurge	5	98.2	5	49	5.0× / 1
Spills · Gulf of Mexicosurge	5	76	4	42	2.5× / 2
Missiles · North Pacific Ocean	5	62	2	36	0.9× / 5.6
Derelicts · Mediterranean Sea - Eastern Basinsurge	5	25	2	31	3.6× / 1.4
Quakes · South Pacific Ocean	5	15	0	—	0.5× / 10
Exercises · Yellow Seanew	4	104.1	3	34	new / 0
Nav aids · Irish Sea and St. George's Channelsurge	4	75.1	2	42	2.0× / 2
Incidents · South Atlantic Ocean	4	62.3	2	313	0.7× / 5.4
Incidents · North Pacific Ocean	4	50.1	3	25	0.3× / 12.6
Surveys · Mediterranean Sea - Eastern Basinsurge	4	49.9	1	36	3.3× / 1.2
Nav aids · North Sea	4	19.3	2	21	0.7× / 6
Nav aids · North Atlantic Ocean	3	179.5	5	265	0.6× / 5.4
Other · Persian Gulfsurgelong running	3	134.6	4	574	15× / 0.2
Cable ops · Mediterranean Sea - Eastern Basinsurge	3	68.8	3	71	3.0× / 1
Exercises · Mediterranean Sea - Eastern Basin	3	56.8	2	31	1.3× / 2.4
Exercises · Persian Gulfsurge	3	33.1	2	23	15× / 0.2
Incidents · North Atlantic Ocean	3	31.8	1	33	0.6× / 4.8
Incidents · Indian Ocean	3	19.1	0	—	0.6× / 5
Quakes · Southern Oceansurge	3	10.2	1	31	5.0× / 0.6
Quakes · Solomon Seasurge	3	9	0	—	3.8× / 0.8
Exercises · Arabian Seasurge	3	8.5	1	29	3.0× / 1
Nav aids · Bay of Bengalnew	2	218.8	8	335	new / 0
Cable ops · South China Sea	2	155.7	5	191	0.8× / 2.4
Incidents · South Pacific Ocean	2	128.4	4	64	0.4× / 5
Nav aids · Coral Sea	2	99.6	4	71	0.9× / 2.2
Nav aids · Andaman or Burma Sea	2	83.3	3	62	5.0× / 0.4
Surveys · Tyrrhenian Sea	2	80.6	1	57	2.5× / 0.8
Incidents · Coral Sea	2	73.7	2	58	0.3× / 6.6
Exercises · Japan Sea	2	62.1	2	34	2.0× / 1
Cable ops · North Atlantic Ocean	2	58.6	1	64	0.3× / 6.2
Wrecks · Arabian Seanew	2	43.3	3	76	new / 0
Surveys · Sea of Okhotsk	2	35.7	2	20	5.0× / 0.4
Other · Mediterranean Sea - Eastern Basin	2	35.3	1	133	3.3× / 0.6
Derelicts · North Atlantic Ocean	2	34.9	1	28	1.3× / 1.6
Nav aids · Inner Seas off the West Coast of Scotlandlong running	2	33.6	1	393	0.7× / 2.8
Surveys · Black Sea	2	12.5	0	—	10× / 0.2
Nav aids · Mediterranean Sea - Eastern Basin	2	12.4	2	11	3.3× / 0.6
Containers · Philippine Sea	2	12.1	0	—	5.0× / 0.4
Other · Labrador Sea	2	10.8	0	—	0.7× / 2.8
Debris · Indian Oceannew	2	8.2	0	—	new / 0
Towing · Tyrrhenian Seanew	2	6.5	0	—	new / 0
Quakes · Indian Ocean	2	6	0	—	1.3× / 1.6
Exercises · Indian Oceannew	2	5.8	1	18	new / 0
Wrecks · South China Seanew	2	5.2	1	3	new / 0
Quakes · Philippine Sea	2	3.3	1	12	1.0× / 2
Nav aids · Mediterranean Sea - Western Basin	2	0.8	0	—	3.3× / 0.6
Nav aids · Red Sealong running	1	79.5	2	630	2.5× / 0.4
Nav aids · Indian Ocean	1	78.8	2	111	1.3× / 0.8
Surveys · North Sea	1	67	2	137	0.2× / 5
Nav aids · English Channel	1	64	3	75	0.3× / 3
Nav aids · North Pacific Ocean	1	41.4	2	32	2.5× / 0.4
Nav aids · Tasman Sea	1	41	2	49	0.5× / 2.2
Incidents · Arabian Sea	1	40	1	35	0.8× / 1.2
Surveys · South Atlantic Ocean	1	37.7	1	66	0.5× / 2
Wrecks · Mediterranean Sea - Eastern Basin	1	37.6	2	64	new / 0
Exercises · Malacca Strait	1	34.9	1	34	1.7× / 0.6
Incidents · Philippine Sea	1	30.2	1	50	0.3× / 3.4
Other · South Atlantic Ocean	1	30	1	30	1.7× / 0.6
Other · North Sea	1	28.9	1	28	0.4× / 2.8
Cable ops · Sea of Okhotsk	1	27.4	1	55	5.0× / 0.2
Incidents · Mediterranean Sea - Western Basin	1	26.7	1	26	new / 0
Nav aids · Malacca Strait	1	22.7	1	22	new / 0
Nav aids · Bismarck Sea	1	18.6	1	18	new / 0
Nav aids · Tyrrhenian Sea	1	18.4	1	18	0.4× / 2.6
Incidents · Southern Ocean	1	17.5	1	17	1.7× / 0.6
Incidents · Red Sea	1	14.7	1	14	new / 0
Spills · Bering Sea	1	14	0	—	new / 0
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	14	0	—	5.0× / 0.2
Incidents · Bay of Bengal	1	11.6	1	11	1.7× / 0.6
Incidents · Bay of Biscay	1	11.6	1	11	1.7× / 0.6
Cable ops · Gulf of Guinea	1	10.1	0	—	1.3× / 0.8
Exercises · South Atlantic Ocean	1	9.7	0	—	1.3× / 0.8
Cable ops · Alboran Sea	1	7.9	0	—	new / 0
Cable ops · Mediterranean Sea - Western Basin	1	6.9	0	—	5.0× / 0.2
Derelicts · South Atlantic Ocean	1	6.9	0	—	0.4× / 2.4
Icebergs · Indian Ocean	1	6.5	1	6	new / 0
Other · Mediterranean Sea - Western Basin	1	6.3	0	—	5.0× / 0.2
Derelicts · Tyrrhenian Sea	1	6.3	0	—	1.7× / 0.6
Debris · North Sea	1	6.1	0	—	2.5× / 0.4
Other · Yellow Sea	1	6.1	0	—	0.6× / 1.6
Exercises · South Pacific Ocean	1	6	1	34	0.7× / 1.4
Derelicts · Mediterranean Sea - Western Basin	1	5.9	0	—	new / 0
Ordnance · Philippine Sea	1	5.8	0	—	2.5× / 0.4
Derelicts · Timor Sea	1	5.7	0	—	new / 0
Other · Timor Sea	1	5.6	1	5	new / 0
Ordnance · Black Sea	1	4.9	0	—	5.0× / 0.2
Exercises · Sulu Sea	1	4.7	0	—	new / 0
Quakes · South Atlantic Ocean	1	4.5	0	—	0.7× / 1.4
Ordnance · Persian Gulf	1	4.4	0	—	1.3× / 0.8
Exercises · Philippine Sea	1	4.2	0	—	1.7× / 0.6
Quakes · Andaman or Burma Sea	1	3.6	0	—	1.7× / 0.6
Quakes · Aegean Sea	1	3	0	—	new / 0
Quakes · Bismarck Sea	1	3	0	—	0.8× / 1.2
Quakes · Coral Sea	1	3	0	—	0.4× / 2.6
Quakes · Gulf of Mexico	1	3	0	—	new / 0
Cable ops · South Atlantic Ocean	1	3	0	—	0.0× / 29.6
Derelicts · South China Sea	1	3	0	—	new / 0
Wrecks · Mozambique Channel	1	2.9	0	—	new / 0
Ordnance · Mediterranean Sea - Eastern Basin	1	2.1	0	—	new / 0
Other · Inner Seas off the West Coast of Scotland	1	2	0	—	5.0× / 0.2
Nav aids · Great Australian Bight	1	1.9	0	—	1.7× / 0.6
Restricted · South Atlantic Ocean	1	1.9	0	—	new / 0
Ordnance · South Pacific Ocean	1	1.4	0	—	new / 0
Derelicts · North Pacific Ocean	1	1.3	1	1	1.3× / 0.8
Cable ops · Indian Ocean	1	0.5	0	—	5.0× / 0.2
Exercises · Mediterranean Sea - Western Basin	1	0.5	0	—	0.6× / 1.6
Incidents · English Channel	1	0.3	0	—	new / 0
Incidents · Great Australian Bight	1	0.3	0	—	5.0× / 0.2
Incidents · Gulf of Guinea	1	0.1	0	—	5.0× / 0.2
Incidents · Timor Sea	1	0.1	0	—	2.5× / 0.4
Exercises · Aegean Sea	0	217	7	245	0.0× / 1.6
Surveys · Baffin Bay	0	155	5	334	— / 0
Surveys · Beaufort Sea	0	93	3	236	— / 0
War risk · Persian Gulflong running	0	93	3	942	— / 0
Cable ops · North Sea	0	80.3	2	56	0.0× / 3.8
Incidents · Mediterranean Sea - Eastern Basin	0	66.1	1	58	0.0× / 1.2
Other · Coral Sea	0	62	2	67	0.0× / 0.2
Restricted · Indian Oceanlong running	0	62	2	448	— / 0
Exercises · Ionian Sea	0	62	2	245	0.0× / 1.6
Nav aids · Mozambique Channel	0	62	2	119	0.0× / 0.6
Cable ops · Timor Sea	0	62	2	80	0.0× / 0.4
Surveys · Bay of Bengal	0	51	1	111	0.0× / 0.2
Surveys · Persian Gulf	0	48.5	1	179	0.0× / 0.2
Nav aids · Celtic Sea	0	33.2	1	53	0.0× / 2.6
Surveys · Arctic Ocean	0	31	1	236	— / 0
Surveys · Balearic (Iberian Sea)long running	0	31	1	404	— / 0
Nav aids · Bass Strait	0	31	1	52	0.0× / 0.4
Wrecks · Bass Strait	0	31	1	123	— / 0
Ordnance · Bay of Bengal	0	31	1	56	— / 0
Wrecks · Bay of Bengal	0	31	1	97	0.0× / 0.2
Other · Black Sea	0	31	1	134	0.0× / 0.2
Towing · Black Sea	0	31	1	134	— / 0
Incidents · Celtic Sea	0	31	1	46	0.0× / 0.2
Surveys · Greenland Sealong running	0	31	1	552	— / 0
Ordnance · Gulf of Oman	0	31	1	63	— / 0
Nav aids · Gulf of Suez	0	31	1	66	0.0× / 1
Nav aids · Ionian Sea	0	31	1	281	0.0× / 0.4
Nav aids · Laccadive Sea	0	31	1	77	— / 0
Wrecks · Laccadive Sea	0	31	1	49	— / 0
Surveys · North Atlantic Ocean	0	31	1	39	0.0× / 3
Debris · North Pacific Ocean	0	31	1	76	0.0× / 0.8
Restricted · North Pacific Ocean	0	31	1	89	— / 0
Incidents · Norwegian Sea	0	31	1	38	— / 0
Nav aids · Persian Gulflong running	0	31	1	1,001	0.0× / 1.4
Nav aids · Philippine Sea	0	31	1	32	— / 0
Volcanic · Philippine Sea	0	31	1	123	0.0× / 0.6
Wrecks · Singapore Strait	0	31	1	99	— / 0
Nav aids · South China Sealong running	0	31	1	440	— / 0
Wrecks · South Pacific Ocean	0	31	1	93	— / 0
Other · Tasman Sea	0	31	1	83	0.0× / 0.6
Wrecks · Yellow Sea	0	31	1	76	— / 0
Cable ops · Sea of Azov	0	30	0	—	— / 0
Restricted · North Sea	0	24.6	0	—	— / 0
Nav aids · Southern Ocean	0	17.6	0	—	— / 0
Incidents · Tasman Sea	0	17.5	0	—	0.0× / 0.8
Incidents · Tyrrhenian Sea	0	10.6	0	—	0.0× / 0.8
Other · Indian Ocean	0	8	0	—	— / 0
Derelicts · Arafura Sea	0	5	0	—	0.0× / 0.2
Derelicts · Eastern China Sea	0	3	0	—	0.0× / 0.2
Mines · Sea of Azov	0	3	0	—	— / 0
Derelicts · Indian Ocean	0	0	0	—	0.0× / 1.2

Cite: seahazards.com Sea Ledger, 2004-08, 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.