Sea Ledger, July 2004

2004-07-01 to 2004-07-31 · archive

issued: 269
warning-days in force: 5,681
in force at month end: 175
sea × type cells: 180

baseline: same month, previous 5 years (2003-07, 2002-07, 2001-07, 2000-07, 1999-07)

By type

type	issued	warning-days	in force at end
Exercises	64	816.7	21
Nav aids	35	1,601.6	53
Quakes	35	107.5	4
Incidents	34	557.5	17
Cable ops	24	410.1	15
Derelicts	20	119.7	4
Surveys	16	778.3	24
Other	9	305.8	11
Spills	9	142	3
Missiles	7	65.5	2
Containers	4	18.1	0
Restricted	3	117.7	4
Ordnance	3	63.4	2
Debris	2	43.8	1
Mines	1	2.4	1
Wrecks	1	323.6	8
Towing	1	36.7	1
Volcanic	1	47.7	1
War risk	0	93	3
Structures	0	29.4	0

By sea and type · 180 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Quakes · South Pacific Ocean	12	36	0	—	1.7× / 7.2
Exercises · Laccadive Seasurge	10	42.6	1	36	3.1× / 3.2
Exercises · North Pacific Ocean	7	73.3	1	36	0.9× / 7.8
Exercises · North Atlantic Ocean	7	62.7	1	81	0.8× / 8.6
Cable ops · Mediterranean Sea - Western Basinsurge	7	15.4	1	23	7.0× / 1
Spills · Gulf of Mexicosurge	6	77	3	34	2.5× / 2.4
Incidents · Mediterranean Sea - Eastern Basinsurge	6	70.7	3	60	6.0× / 1
Missiles · North Pacific Ocean	6	62	2	36	1.1× / 5.4
Exercises · Mediterranean Sea - Eastern Basinsurge	6	60	1	63	2.7× / 2.2
Exercises · Bay of Bengalsurge	6	18.1	0	—	3.3× / 1.8
Nav aids · South Atlantic Oceanlong running	5	225.9	4	400	0.8× / 6.6
Nav aids · Bay of Bengalsurge	5	185.1	6	304	25× / 0.2
Incidents · South Pacific Ocean	5	88.7	3	55	0.7× / 6.8
Nav aids · Irish Sea and St. George's Channelsurge	5	56.8	3	76	3.6× / 1.4
Incidents · Indian Ocean	5	52.5	1	69	1.3× / 3.8
Cable ops · North Sea	5	41.4	3	26	0.8× / 6
Derelicts · Mediterranean Sea - Eastern Basinsurge	5	27.1	1	31	2.8× / 1.8
Exercises · South Pacific Oceansurge	5	7.9	2	16	5.0× / 1
Exercises · Yellow Seanew	4	76	3	35	new / 0
Quakes · North Pacific Ocean	4	13.7	0	—	0.8× / 5.2
Derelicts · South Atlantic Oceansurge	4	11.5	0	—	2.0× / 2
Nav aids · Coral Sea	3	94.2	4	40	1.4× / 2.2
Cable ops · South China Sea	3	80.6	4	160	1.7× / 1.8
Incidents · South Atlantic Ocean	3	60.8	1	282	0.4× / 6.8
Exercises · Black Sea	3	49	0	—	1.9× / 1.6
Surveys · Ionian Seasurge	3	33	0	—	3.8× / 0.8
Nav aids · Celtic Sea	3	32.4	2	24	1.0× / 3
Surveys · Tyrrhenian Seasurge	3	27.2	3	26	3.8× / 0.8
Derelicts · South China Seasurge	3	12.7	0	—	5.0× / 0.6
Cable ops · South Atlantic Ocean	3	9.9	0	—	0.1× / 32
Quakes · Indian Ocean	3	9.5	0	—	1.3× / 2.4
Quakes · Andaman or Burma Seanew	3	8.4	2	6	new / 0
Exercises · Arabian Sea	3	4.8	0	—	1.9× / 1.6
Exercises · Japan Sea	2	68.5	2	36	0.8× / 2.6
Surveys · North Sea	2	65.1	2	106	0.3× / 6
Cable ops · North Atlantic Ocean	2	49.5	2	57	0.2× / 10.6
Incidents · Coral Sea	2	47.4	2	27	0.3× / 5.8
Spills · North Pacific Ocean	2	39	0	—	2.5× / 0.8
Exercises · Malacca Strait	2	29.3	1	25	3.3× / 0.6
Incidents · Laccadive Sea	2	16.4	0	—	5.0× / 0.4
Incidents · Arabian Sea	2	14.8	1	50	1.3× / 1.6
Derelicts · North Atlantic Ocean	2	12.8	0	—	1.0× / 2
Containers · Philippine Seanew	2	11.2	0	—	new / 0
Exercises · South Atlantic Ocean	2	9.8	0	—	10× / 0.2
Exercises · Red Sea	2	9.3	0	—	5.0× / 0.4
Ordnance · North Atlantic Ocean	2	7	0	—	0.6× / 3.4
Quakes · Coral Sea	2	6	0	—	1.3× / 1.6
Other · Indian Ocean	2	6	1	11	5.0× / 0.4
Quakes · Philippine Sea	2	6	0	—	0.4× / 5
Quakes · Solomon Sea	2	6	0	—	1.3× / 1.6
Nav aids · Philippine Sea	2	5.5	1	5	10× / 0.2
Quakes · Southern Ocean	2	3.9	1	15	5.0× / 0.4
Nav aids · North Sea	2	2.5	0	—	0.4× / 5.6
Nav aids · South Pacific Ocean	1	131.6	4	99	0.5× / 2
Other · Persian Gulflong running	1	125.5	5	543	new / 0
Nav aids · Mozambique Channel	1	90.8	2	88	2.5× / 0.4
Nav aids · Red Sealong running	1	64.6	3	599	new / 0
Surveys · South Atlantic Ocean	1	62	2	36	1.0× / 1
Other · Coral Sea	1	56	2	36	new / 0
Volcanic · Philippine Sea	1	47.7	1	92	new / 0
Nav aids · Andaman or Burma Sea	1	47.4	2	31	2.5× / 0.4
Restricted · Indian Oceanlong running	1	44.7	2	417	new / 0
Nav aids · Arabian Sea	1	43.7	1	78	1.7× / 0.6
Nav aids · North Pacific Ocean	1	42.6	1	40	1.7× / 0.6
Surveys · Bay of Bengal	1	41.4	2	80	new / 0
Nav aids · English Channel	1	40.5	2	44	0.4× / 2.8
Surveys · Mediterranean Sea - Eastern Basin	1	35.7	1	46	0.4× / 2.6
Incidents · Philippine Sea	1	35.2	1	78	0.1× / 7.8
Nav aids · Inner Seas off the West Coast of Scotland	1	33.3	1	362	0.3× / 3.8
Surveys · North Atlantic Ocean	1	31	1	66	0.6× / 1.8
Incidents · Tasman Sea	1	28.6	1	28	0.8× / 1.2
Ordnance · Bay of Bengal	1	25.4	1	25	new / 0
Cable ops · Sea of Okhotsk	1	25	1	24	5.0× / 0.2
Derelicts · Arafura Sea	1	24.1	1	35	5.0× / 0.2
Nav aids · Bass Strait	1	21.6	1	21	1.3× / 0.8
Exercises · Mediterranean Sea - Western Basin	1	20	0	—	0.4× / 2.4
Wrecks · Laccadive Sea	1	18.3	1	18	new / 0
Nav aids · Tasman Sea	1	18.1	1	18	0.8× / 1.2
Incidents · Celtic Sea	1	15.6	1	15	new / 0
Spills · North Atlantic Ocean	1	14	0	—	0.7× / 1.4
Derelicts · South Pacific Ocean	1	13.7	0	—	0.5× / 2
Restricted · North Atlantic Ocean	1	11.8	0	—	5.0× / 0.2
Surveys · Adriatic Sea	1	9.8	0	—	1.7× / 0.6
Cable ops · English Channel	1	9.8	0	—	0.7× / 1.4
Cable ops · Celtic Sea	1	9.4	0	—	0.1× / 8.6
Restricted · North Sea	1	9.4	1	9	new / 0
Incidents · North Atlantic Ocean	1	8.6	1	55	0.2× / 6
Incidents · Norwegian Sea	1	7.6	1	7	new / 0
Derelicts · Indian Ocean	1	7	1	6	2.5× / 0.4
Debris · Irish Sea and St. George's Channel	1	6.9	0	—	new / 0
Derelicts · North Pacific Ocean	1	6.8	0	—	0.6× / 1.6
Containers · Arabian Sea	1	6.6	0	—	5.0× / 0.2
Incidents · Arafura Sea	1	6.3	0	—	1.3× / 0.8
Surveys · Bay of Biscay	1	6.3	0	—	1.3× / 0.8
Other · North Atlantic Ocean	1	6.2	0	—	0.1× / 6.6
Cable ops · Sea of Azov	1	6	1	72	new / 0
Debris · Celtic Sea	1	5.9	0	—	new / 0
Other · South Atlantic Ocean	1	5.8	0	—	5.0× / 0.2
Surveys · Mediterranean Sea - Western Basin	1	5.7	0	—	1.3× / 0.8
Towing · Tyrrhenian Sea	1	5.7	0	—	new / 0
Missiles · South Pacific Ocean	1	3.5	0	—	new / 0
Derelicts · Eastern China Sea	1	3.4	1	3	new / 0
Other · English Channel	1	3	0	—	2.5× / 0.4
Quakes · North Atlantic Ocean	1	3	0	—	1.7× / 0.6
Quakes · Sea of Okhotsk	1	3	0	—	2.5× / 0.4
Quakes · South China Sea	1	3	0	—	1.7× / 0.6
Quakes · Tasman Sea	1	3	0	—	new / 0
Incidents · Bismarck Sea	1	2.9	0	—	new / 0
Mines · Sea of Azov	1	2.4	1	2	new / 0
Incidents · Ionian Sea	1	2.3	0	—	5.0× / 0.2
Exercises · Andaman or Burma Sea	1	1.9	0	—	5.0× / 0.2
Other · Inner Seas off the West Coast of Scotland	1	1.9	0	—	5.0× / 0.2
Exercises · Tyrrhenian Sea	1	1.7	0	—	0.6× / 1.6
Quakes · South Atlantic Ocean	1	1.5	1	1	0.7× / 1.4
Exercises · Indian Ocean	1	1.3	0	—	5.0× / 0.2
Derelicts · Tyrrhenian Sea	1	0.6	0	—	new / 0
Other · Arabian Sea	1	0.5	0	—	5.0× / 0.2
Surveys · Celtic Sea	1	0.3	0	—	0.1× / 7.2
Incidents · Mozambique Channel	1	0.3	0	—	new / 0
Containers · South Pacific Ocean	1	0.3	0	—	0.8× / 1.2
Exercises · Gulf of Mexico	1	0	0	—	new / 0
Exercises · Aegean Sea	0	217	7	214	0.0× / 0.6
Nav aids · North Atlantic Ocean	0	186	6	234	0.0× / 5.8
Surveys · Baffin Bay	0	155	5	303	— / 0
Surveys · Beaufort Sea	0	93	3	205	— / 0
Nav aids · Indian Ocean	0	93	3	80	0.0× / 0.6
War risk · Persian Gulflong running	0	93	3	911	— / 0
Exercises · Ionian Sea	0	62	2	214	0.0× / 2.6
Surveys · Persian Gulf	0	62	2	148	0.0× / 0.2
Cable ops · Timor Sea	0	62	2	49	0.0× / 0.2
Wrecks · Gulf of Mexico	0	58.9	0	—	— / 0
Incidents · North Pacific Ocean	0	38.7	0	—	0.0× / 8.8
Other · Tasman Sea	0	33.9	1	52	0.0× / 0.2
Wrecks · Arabian Sea	0	31	1	45	0.0× / 0.4
Surveys · Arctic Ocean	0	31	1	205	— / 0
Surveys · Balearic (Iberian Sea)long running	0	31	1	373	0.0× / 0.2
Wrecks · Bass Strait	0	31	1	92	— / 0
Wrecks · Bay of Bengal	0	31	1	66	0.0× / 0.4
Other · Black Sea	0	31	1	103	0.0× / 0.2
Towing · Black Sea	0	31	1	103	— / 0
Surveys · Greenland Sealong running	0	31	1	521	— / 0
Ordnance · Gulf of Oman	0	31	1	32	0.0× / 0.2
Nav aids · Gulf of Suez	0	31	1	35	0.0× / 0.6
Nav aids · Ionian Sea	0	31	1	250	0.0× / 0.2
Nav aids · Laccadive Sea	0	31	1	46	— / 0
Cable ops · Mediterranean Sea - Eastern Basin	0	31	1	40	0.0× / 0.8
Other · Mediterranean Sea - Eastern Basin	0	31	1	102	0.0× / 0.8
Wrecks · Mediterranean Sea - Eastern Basin	0	31	1	33	0.0× / 0.4
Debris · North Pacific Ocean	0	31	1	45	— / 0
Restricted · North Pacific Ocean	0	31	1	58	0.0× / 0.2
Nav aids · Persian Gulflong running	0	31	1	970	0.0× / 1.2
Wrecks · Singapore Strait	0	31	1	68	— / 0
Nav aids · South China Sealong running	0	31	1	409	— / 0
Wrecks · South Pacific Ocean	0	31	1	62	0.0× / 0.6
Nav aids · Southern Ocean	0	31	1	92	— / 0
Incidents · Tyrrhenian Sea	0	31	1	32	— / 0
Wrecks · Yellow Sea	0	31	1	45	— / 0
Cable ops · Yellow Sea	0	30	0	—	0.0× / 0.2
Structures · North Atlantic Ocean	0	29.4	0	—	— / 0
Wrecks · North Atlantic Ocean	0	29.4	0	—	0.0× / 0.4
Cable ops · Norwegian Sea	0	26.8	0	—	0.0× / 0.8
Restricted · Mediterranean Sea - Eastern Basin	0	20.8	0	—	— / 0
Incidents · Gulf of Guinea	0	20.4	0	—	0.0× / 0.8
Surveys · North Pacific Ocean	0	20.4	0	—	0.0× / 0.2
Surveys · Eastern China Sea	0	20	0	—	— / 0
Surveys · Gulf of Suez	0	17.4	0	—	— / 0
Spills · The Coastal Waters of Southeast Alaska and British Columbia	0	12	0	—	0.0× / 0.8
Other · Gulf of Mexico	0	5	0	—	0.0× / 0.4
Cable ops · Gulf of Suez	0	5	0	—	0.0× / 0.2
Cable ops · South Pacific Ocean	0	5	0	—	0.0× / 0.8
Quakes · Molukka Sea	0	4.5	0	—	0.0× / 0.6
Cable ops · Aegean Sea	0	3.3	0	—	0.0× / 0.4
Incidents · Bay of Bengal	0	2.9	0	—	0.0× / 0.2
Incidents · Great Australian Bight	0	2.9	0	—	0.0× / 0.2
Incidents · Persian Gulf	0	2.9	0	—	— / 0
Exercises · Philippine Sea	0	1.5	0	—	0.0× / 0.4
Cable ops · Arabian Sea	0	0	0	—	0.0× / 0.6
Cable ops · Bay of Bengal	0	0	0	—	0.0× / 1
Cable ops · Black Sea	0	0	0	—	0.0× / 0.4
Cable ops · Philippine Sea	0	0	0	—	— / 0

Cite: seahazards.com Sea Ledger, 2004-07, 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.