Sea Ledger, September 2004

2004-09-01 to 2004-09-30 · archive

issued: 272
warning-days in force: 6,221
in force at month end: 209
sea × type cells: 174

baseline: same month, previous 5 years (2003-09, 2002-09, 2001-09, 2000-09, 1999-09)

By type

type	issued	warning-days	in force at end
Exercises	77	928.6	27
Quakes	45	137.5	3
Nav aids	42	1,969.4	67
Cable ops	29	432.8	17
Surveys	18	746.8	28
Incidents	16	628.3	18
Spills	12	126	8
Derelicts	11	86.4	1
Wrecks	5	414.6	15
Missiles	4	60	2
Debris	3	46.6	2
Restricted	2	80.3	2
Other	2	331.1	10
Structures	2	15	2
Mines	1	6.7	0
Icebergs	1	6.1	0
Containers	1	6.1	0
Towing	1	41.5	2
War risk	0	90	3
Ordnance	0	60	2
Volcanic	0	7.5	0

By sea and type · 174 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Quakes · South Pacific Ocean	12	35.1	1	27	1.1× / 11.2
Exercises · Black Sea	11	83.5	2	36	1.7× / 6.6
Quakes · Philippine Seasurge	10	32.7	0	—	3.3× / 3
Exercises · Laccadive Seasurge	9	40.1	1	34	2.4× / 3.8
Quakes · South Atlantic Oceansurge	9	25.9	1	24	6.4× / 1.4
Exercises · Bay of Bengalsurge	8	50	2	34	4.0× / 2
Exercises · North Pacific Ocean	7	67.5	1	34	0.8× / 8.4
Exercises · North Atlantic Ocean	7	46.3	2	34	0.7× / 9.8
Incidents · South Pacific Ocean	6	153.5	6	94	1.3× / 4.6
Nav aids · Irish Sea and St. George's Channelsurge	6	84.9	3	72	2.3× / 2.6
Cable ops · North Atlantic Ocean	6	67	3	94	0.9× / 6.6
Cable ops · South Atlantic Ocean	6	9	1	11	0.2× / 28.2
Nav aids · North Atlantic Ocean	5	154.9	5	295	1.3× / 3.8
Spills · Gulf of Mexicosurge	5	51	4	44	2.8× / 1.8
Exercises · South Atlantic Oceansurge	5	49	1	28	3.6× / 1.4
Missiles · North Pacific Ocean	4	60	2	32	0.7× / 5.4
Exercises · Mediterranean Sea - Eastern Basin	4	37.8	2	61	1.4× / 2.8
Nav aids · North Sea	4	33.2	1	43	0.7× / 5.4
Exercises · Persian Gulfsurge	4	25.8	1	36	4.0× / 1
Nav aids · Tyrrhenian Sea	4	23.2	1	48	1.4× / 2.8
Exercises · South Pacific Oceansurge	4	14.3	0	—	3.3× / 1.2
Surveys · North Sea	3	120.3	4	167	0.8× / 3.6
Exercises · Japan Sea	3	71.8	2	30	1.5× / 2
Spills · North Pacific Oceansurge	3	37	1	17	3.8× / 0.8
Nav aids · Indian Oceansurge	3	12.1	1	141	2.1× / 1.4
Cable ops · Celtic Sea	3	11.9	0	—	1.0× / 3
Quakes · North Pacific Ocean	3	10.5	0	—	0.4× / 6.8
Nav aids · South Pacific Ocean	2	142.9	4	160	0.6× / 3.4
Nav aids · Coral Sea	2	123.1	4	101	1.1× / 1.8
Exercises · Yellow Seanew	2	89.5	2	30	new / 0
Cable ops · South China Sea	2	74.5	2	221	1.3× / 1.6
Nav aids · Laccadive Sea	2	66	3	107	5.0× / 0.4
Nav aids · Celtic Sea	2	63.4	2	83	0.7× / 3
Incidents · South Atlantic Ocean	2	52.8	3	60	0.5× / 3.8
Restricted · Indian Oceannewlong running	2	50.3	1	478	new / 0
Wrecks · Irish Sea and St. George's Channel	2	45.7	2	24	10× / 0.2
Cable ops · Labrador Seanew	2	28	1	25	new / 0
Nav aids · Gulf of Mexico	2	27.9	0	—	10× / 0.2
Surveys · Ionian Sea	2	26.9	1	14	2.5× / 0.8
Surveys · Tyrrhenian Sea	2	25.9	0	—	1.0× / 2
Spills · The Coastal Waters of Southeast Alaska and British Columbianew	2	24	1	17	new / 0
Surveys · Mediterranean Sea - Eastern Basin	2	20.3	2	43	1.1× / 1.8
Incidents · North Atlantic Ocean	2	20.1	0	—	0.5× / 4.2
Incidents · Indian Ocean	2	19.4	2	16	0.5× / 4.4
Derelicts · Mediterranean Sea - Eastern Basin	2	18.3	0	—	5.0× / 0.4
Structures · Adriatic Seanew	2	15	2	13	new / 0
Surveys · Gulf of Mexiconew	2	13.1	1	13	new / 0
Derelicts · South Atlantic Ocean	2	12.2	0	—	1.1× / 1.8
Exercises · Red Seanew	2	10.6	0	—	new / 0
Derelicts · Gulf of Mexico	2	9.6	1	7	2.5× / 0.8
Exercises · Arabian Sea	2	8.3	0	—	1.0× / 2
Quakes · North Atlantic Ocean	2	6	0	—	2.0× / 1
Quakes · Indian Ocean	2	5.4	1	17	0.7× / 2.8
Cable ops · Adriatic Sea	2	4.3	0	—	10× / 0.2
Surveys · Black Sea	2	4.3	1	26	5.0× / 0.4
Nav aids · Bay of Bengallong running	1	223.8	7	365	5.0× / 0.2
Nav aids · Andaman or Burma Sea	1	103.5	4	92	2.5× / 0.4
Incidents · Coral Sea	1	66.1	1	46	0.3× / 3.2
Cable ops · Mediterranean Sea - Eastern Basin	1	61.5	1	101	0.8× / 1.2
Cable ops · Timor Sea	1	60.5	2	110	5.0× / 0.2
Nav aids · Red Sea	1	59.1	2	121	2.5× / 0.4
Surveys · Sea of Okhotsk	1	46	1	50	5.0× / 0.2
Towing · Black Sea	1	41.5	2	164	new / 0
Nav aids · Mediterranean Sea - Eastern Basin	1	40.5	1	41	1.7× / 0.6
Nav aids · Ionian Sea	1	37.3	2	311	2.5× / 0.4
Nav aids · Gulf of Suez	1	37.2	2	96	5.0× / 0.2
Other · Mediterranean Sea - Eastern Basin	1	34.7	1	163	1.0× / 1
Nav aids · Inner Seas off the West Coast of Scotlandlong running	1	33.5	2	423	0.6× / 1.6
Cable ops · Sea of Okhotsk	1	32.5	2	57	new / 0
Exercises · Malacca Strait	1	32.3	1	34	1.7× / 0.6
Other · Timor Sea	1	30	1	35	new / 0
Surveys · South Atlantic Ocean	1	27.6	1	30	0.6× / 1.8
Surveys · Mediterranean Sea - Western Basin	1	21.2	1	21	1.7× / 0.6
Surveys · Gulf of Suez	1	20.6	1	20	new / 0
Nav aids · Great Australian Bight	1	17.9	1	17	5.0× / 0.2
Nav aids · Arafura Sea	1	17.8	1	17	2.5× / 0.4
Cable ops · Arabian Sea	1	13.5	1	13	1.0× / 1
Exercises · Tyrrhenian Sea	1	13.1	0	—	0.3× / 3.8
Spills · Bering Sea	1	13	1	13	5.0× / 0.2
Nav aids · Mediterranean Sea - Western Basin	1	12.9	0	—	0.8× / 1.2
Cable ops · Bass Strait	1	12.3	1	12	5.0× / 0.2
Incidents · Persian Gulf	1	9.1	1	9	1.7× / 0.6
Cable ops · Inner Seas off the West Coast of Scotland	1	8.4	0	—	1.7× / 0.6
Cable ops · Gulf of Suez	1	7.6	1	7	new / 0
Derelicts · Arabian Sea	1	6.7	0	—	5.0× / 0.2
Mines · Black Sea	1	6.7	0	—	new / 0
Debris · Tyrrhenian Sea	1	6.7	0	—	new / 0
Debris · English Channel	1	6.6	0	—	5.0× / 0.2
Derelicts · South Pacific Ocean	1	6.4	0	—	1.7× / 0.6
Derelicts · Tyrrhenian Sea	1	6.4	0	—	new / 0
Derelicts · Coral Sea	1	6.2	0	—	2.5× / 0.4
Derelicts · North Pacific Ocean	1	6.1	0	—	1.0× / 1
Containers · North Sea	1	6.1	0	—	new / 0
Exercises · Sea of Okhotsk	1	6.1	0	—	2.5× / 0.4
Icebergs · South Atlantic Ocean	1	6.1	0	—	0.2× / 4.8
Wrecks · Bristol Channel	1	5.8	0	—	new / 0
Exercises · Alboran Sea	1	4.6	0	—	new / 0
Cable ops · Black Sea	1	4.3	1	4	2.5× / 0.4
Quakes · Southern Ocean	1	3.9	0	—	1.7× / 0.6
Exercises · Indian Ocean	1	3.7	0	—	0.6× / 1.6
Debris · Philippine Sea	1	3.3	1	3	1.7× / 0.6
Wrecks · Gulf of Mexico	1	3.1	1	3	5.0× / 0.2
Quakes · Andaman or Burma Sea	1	3	0	—	1.3× / 0.8
Quakes · Caribbean Sea	1	3	0	—	new / 0
Quakes · Celebes Sea	1	3	0	—	5.0× / 0.2
Quakes · Coral Sea	1	3	0	—	0.7× / 1.4
Quakes · Gulf of California	1	3	0	—	new / 0
Quakes · South China Sea	1	3	0	—	5.0× / 0.2
Incidents · Mozambique Channel	1	2.4	1	2	2.5× / 0.4
Exercises · Mediterranean Sea - Western Basin	1	2.1	0	—	0.3× / 3
Exercises · Bering Sea	1	1	0	—	new / 0
Spills · North Atlantic Ocean	1	1	1	1	0.8× / 1.2
Exercises · Philippine Sea	1	0.7	0	—	2.5× / 0.4
Surveys · Philippine Sea	1	0.6	1	0	0.6× / 1.6
Incidents · Timor Sea	1	0.6	0	—	5.0× / 0.2
Exercises · South China Sea	1	0.5	1	0	5.0× / 0.2
Wrecks · North Atlantic Ocean	1	0	0	—	new / 0
Exercises · Aegean Sea	0	210	7	275	0.0× / 4.6
Nav aids · Arabian Sea	0	150	5	79	0.0× / 0.4
Surveys · Baffin Bay	0	150	5	364	— / 0
Other · Persian Gulflong running	0	100	3	604	0.0× / 0.8
Wrecks · Arabian Sea	0	90	3	106	0.0× / 0.2
Surveys · Beaufort Sea	0	90	3	266	— / 0
War risk · Persian Gulflong running	0	90	3	972	— / 0
Incidents · North Pacific Ocean	0	89.2	1	48	0.0× / 12.6
Nav aids · South Atlantic Ocean	0	83.6	2	236	0.0× / 5.2
Nav aids · English Channel	0	60.7	2	105	0.0× / 1.8
Other · Coral Sea	0	60	2	97	0.0× / 0.2
Exercises · Ionian Sea	0	60	2	275	0.0× / 2.4
Wrecks · Mediterranean Sea - Eastern Basin	0	60	2	94	— / 0
Nav aids · Mozambique Channel	0	60	2	149	0.0× / 0.8
Nav aids · North Pacific Ocean	0	60	2	62	0.0× / 0.2
Nav aids · Tasman Sea	0	60	2	79	0.0× / 1.8
Cable ops · North Sea	0	37.5	1	86	0.0× / 2.6
Surveys · Arctic Ocean	0	30	1	266	— / 0
Surveys · Balearic (Iberian Sea)long running	0	30	1	434	— / 0
Nav aids · Bass Strait	0	30	1	82	0.0× / 0.4
Wrecks · Bass Strait	0	30	1	153	— / 0
Ordnance · Bay of Bengal	0	30	1	86	— / 0
Incidents · Bay of Bengal	0	30	1	41	0.0× / 0.8
Surveys · Bay of Bengal	0	30	1	141	— / 0
Wrecks · Bay of Bengal	0	30	1	127	— / 0
Incidents · Bay of Biscay	0	30	1	41	0.0× / 0.2
Nav aids · Bismarck Sea	0	30	1	48	— / 0
Other · Black Sea	0	30	1	164	— / 0
Surveys · Greenland Sealong running	0	30	1	582	— / 0
Ordnance · Gulf of Oman	0	30	1	93	— / 0
Wrecks · Laccadive Sea	0	30	1	79	— / 0
Nav aids · Malacca Strait	0	30	1	52	0.0× / 0.2
Surveys · North Atlantic Ocean	0	30	1	69	0.0× / 1.6
Debris · North Pacific Ocean	0	30	1	106	0.0× / 1
Restricted · North Pacific Ocean	0	30	1	119	— / 0
Other · North Sea	0	30	1	58	0.0× / 1.4
Nav aids · Persian Gulflong running	0	30	1	1,031	0.0× / 1
Surveys · Persian Gulf	0	30	1	155	— / 0
Nav aids · Philippine Sea	0	30	1	62	0.0× / 0.2
Incidents · Philippine Sea	0	30	1	35	0.0× / 6
Wrecks · Singapore Strait	0	30	1	129	— / 0
Nav aids · South China Sealong running	0	30	1	470	— / 0
Wrecks · South China Sea	0	30	1	33	0.0× / 0.4
Wrecks · South Pacific Ocean	0	30	1	123	— / 0
Other · Tasman Sea	0	30	1	113	— / 0
Wrecks · Yellow Sea	0	30	1	106	— / 0
Incidents · Red Sea	0	29.6	0	—	0.0× / 0.2
Incidents · Southern Ocean	0	29.6	0	—	— / 0
Incidents · Arabian Sea	0	21.6	0	—	0.0× / 1.4
Incidents · Mediterranean Sea - Western Basin	0	21.6	0	—	— / 0
Other · South Atlantic Ocean	0	16.4	0	—	0.0× / 1
Incidents · Mediterranean Sea - Eastern Basin	0	14.5	0	—	0.0× / 1.2
Derelicts · North Atlantic Ocean	0	14.5	0	—	0.0× / 2.2
Incidents · Norwegian Sea	0	7.5	0	—	— / 0
Volcanic · Philippine Sea	0	7.5	0	—	0.0× / 0.2
Incidents · Celtic Sea	0	0.7	0	—	0.0× / 0.2
Icebergs · Indian Ocean	0	0	0	—	0.0× / 0.4

Cite: seahazards.com Sea Ledger, 2004-09, 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.