Sea Ledger, November 2004

2004-11-01 to 2004-11-30 · archive

issued: 250
warning-days in force: 6,585
in force at month end: 215
sea × type cells: 176

baseline: same month, previous 5 years (2003-11, 2002-11, 2001-11, 2000-11, 1999-11)

By type

type	issued	warning-days	in force at end
Exercises	68	709.7	14
Quakes	50	150.5	4
Nav aids	30	1,970.2	69
Incidents	27	974.8	32
Cable ops	24	493.7	19
Surveys	18	774.2	24
Other	13	434.8	16
Derelicts	6	30.2	2
Missiles	6	60	2
Spills	4	45	3
Ordnance	2	44.4	1
Containers	1	3.7	0
Debris	1	36.5	1
War risk	0	90	3
Wrecks	0	630	21
Towing	0	30	1
Structures	0	67.6	2
Restricted	0	39.7	1

By sea and type · 176 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Quakes · North Pacific Oceansurge	14	40.5	2	28	2.3× / 6
Quakes · South Pacific Ocean	13	38.6	2	28	1.3× / 10.2
Exercises · North Atlantic Ocean	11	39.8	1	32	1.1× / 9.8
Cable ops · South Atlantic Ocean	10	64.7	2	32	0.3× / 31.2
Exercises · Laccadive Seasurge	10	51.3	1	30	2.3× / 4.4
Exercises · North Pacific Ocean	8	28.8	0	—	1.4× / 5.8
Exercises · Bay of Bengalsurge	7	29.5	0	—	2.2× / 3.2
Quakes · Coral Seasurge	7	22.6	0	—	2.9× / 2.4
Missiles · North Pacific Ocean	6	60	2	60	1.1× / 5.2
Exercises · South Pacific Oceansurge	6	33.8	0	—	2.0× / 3
Nav aids · Coral Seasurge	5	172.7	7	162	5.0× / 1
Incidents · Indian Ocean	5	65.7	2	77	0.9× / 5.4
Nav aids · North Sea	5	46.1	2	33	0.7× / 7
Incidents · North Atlantic Ocean	4	77.6	3	60	0.7× / 5.8
Exercises · Black Seasurge	4	26.2	1	19	2.2× / 1.8
Quakes · Banda Seasurge	4	12	0	—	10× / 0.4
Quakes · Philippine Seasurge	4	12	0	—	2.2× / 1.8
Cable ops · Mediterranean Sea - Eastern Basin	3	98.7	3	40	1.9× / 1.6
Nav aids · Mozambique Channelsurge	3	82.5	3	210	7.5× / 0.4
Incidents · South Atlantic Ocean	3	81.4	3	66	0.7× / 4.6
Cable ops · Arabian Sea	3	69.8	4	74	1.4× / 2.2
Surveys · Mediterranean Sea - Eastern Basin	3	58.8	1	56	1.5× / 2
Exercises · Mediterranean Sea - Eastern Basin	3	37.2	1	28	0.9× / 3.4
Spills · North Atlantic Oceansurge	3	31	3	32	3.0× / 1
Surveys · English Channelsurge	3	18.9	0	—	3.8× / 0.8
Exercises · Arabian Sea	3	8	0	—	0.8× / 4
Nav aids · Arabian Sea	2	153.8	5	140	10× / 0.2
Incidents · South Pacific Ocean	2	153	5	155	0.4× / 5.2
Incidents · Coral Sea	2	122.5	4	67	0.4× / 4.8
Incidents · North Pacific Ocean	2	113.9	3	53	0.2× / 11.2
Nav aids · North Atlantic Ocean	2	72.7	2	225	0.5× / 4
Nav aids · Celtic Sea	2	67.2	1	144	1.1× / 1.8
Exercises · Ionian Sea	2	63.5	2	336	1.4× / 1.4
Nav aids · South Atlantic Ocean	2	61.6	3	297	0.3× / 7.6
Other · Tasman Seanew	2	58.5	2	174	new / 0
Other · Japan Sea	2	51.5	2	25	1.3× / 1.6
Exercises · Yellow Seanew	2	43.2	0	—	new / 0
Surveys · North Atlantic Ocean	2	29.3	0	—	1.7× / 1.2
Exercises · Persian Gulfnew	2	12.8	0	—	new / 0
Cable ops · Ionian Sea	2	9.7	1	19	10× / 0.2
Derelicts · North Atlantic Ocean	2	6.8	1	23	0.4× / 5
Surveys · South Atlantic Ocean	2	3	1	5	0.5× / 3.8
Exercises · Bering Seanew	2	2	0	—	new / 0
Nav aids · Laccadive Sea	1	109.8	3	168	5.0× / 0.2
Incidents · Arabian Sea	1	85.7	3	44	1.7× / 0.6
Nav aids · Tasman Sea	1	84.5	3	140	0.7× / 1.4
Nav aids · English Channel	1	69.7	3	166	0.4× / 2.6
Nav aids · Great Australian Bight	1	64.5	3	78	0.7× / 1.4
Nav aids · Gulf of Suez	1	63.6	3	157	5.0× / 0.2
Other · Coral Sea	1	60.8	2	158	5.0× / 0.2
Incidents · Philippine Sea	1	42.9	2	40	0.2× / 4.6
Incidents · Arafura Sea	1	42.2	1	49	1.3× / 0.8
Surveys · Ionian Sea	1	41.1	1	39	2.5× / 0.4
Nav aids · Inner Seas off the West Coast of Scotlandlong running	1	36.3	1	484	0.4× / 2.4
Other · Timor Sea	1	30.1	1	41	new / 0
Nav aids · Arafura Sea	1	30	1	78	5.0× / 0.2
Surveys · Bass Strait	1	30	1	48	5.0× / 0.2
Cable ops · Gulf of Mexico	1	30	1	50	5.0× / 0.2
Cable ops · South China Sea	1	30	1	52	1.7× / 0.6
Incidents · Southern Ocean	1	28.9	1	28	5.0× / 0.2
Surveys · Bay of Bengal	1	28.5	1	28	new / 0
Surveys · Mediterranean Sea - Western Basin	1	28.4	1	39	2.5× / 0.4
Exercises · Mediterranean Sea - Western Basin	1	28.1	0	—	0.3× / 3.4
Incidents · Tyrrhenian Sea	1	27.9	1	27	new / 0
Other · North Sea	1	24.4	0	—	1.7× / 0.6
Incidents · Mediterranean Sea - Eastern Basin	1	23.9	0	—	0.3× / 3.2
Surveys · Alboran Sea	1	21.7	1	21	new / 0
Other · South Pacific Ocean	1	21.4	1	21	2.5× / 0.4
Other · Adriatic Sea	1	16.4	1	16	2.5× / 0.4
Cable ops · Gulf of Suez	1	14.1	1	36	5.0× / 0.2
Spills · North Pacific Ocean	1	14	0	—	1.0× / 1
Nav aids · Tyrrhenian Sea	1	12.7	1	12	0.3× / 3.2
Surveys · Philippine Sea	1	10.8	0	—	2.5× / 0.4
Other · North Pacific Ocean	1	10.4	1	10	1.7× / 0.6
Incidents · Adriatic Sea	1	9.9	1	9	5.0× / 0.2
Surveys · North Sea	1	9.5	0	—	0.3× / 4
Ordnance · Mediterranean Sea - Eastern Basin	1	8.9	0	—	new / 0
Exercises · Andaman or Burma Sea	1	8.1	0	—	1.7× / 0.6
Exercises · Gulf of Oman	1	7.9	0	—	new / 0
Cable ops · Eastern China Sea	1	7.8	0	—	1.3× / 0.8
Derelicts · Laccadive Sea	1	6.7	0	—	new / 0
Other · Celtic Sea	1	6.6	0	—	0.8× / 1.2
Debris · Arafura Sea	1	6.5	0	—	new / 0
Derelicts · Persian Gulf	1	6.3	0	—	1.3× / 0.8
Derelicts · Tasman Sea	1	6.1	0	—	5.0× / 0.2
Exercises · Tyrrhenian Sea	1	5.9	0	—	0.3× / 3
Incidents · Ligurian Sea	1	5.1	1	5	new / 0
Derelicts · South Atlantic Ocean	1	4.3	1	4	0.6× / 1.8
Exercises · Adriatic Sea	1	3.7	0	—	0.3× / 3.4
Containers · Celtic Sea	1	3.7	0	—	new / 0
Surveys · Arabian Sea	1	3.4	1	3	new / 0
Exercises · Indian Ocean	1	3.3	0	—	new / 0
Quakes · Bismarck Sea	1	3	0	—	0.5× / 2.2
Quakes · Caribbean Sea	1	3	0	—	2.5× / 0.4
Quakes · Japan Sea	1	3	0	—	5.0× / 0.2
Quakes · Savu Sea	1	3	0	—	5.0× / 0.2
Quakes · Sea of Okhotsk	1	3	0	—	2.5× / 0.4
Quakes · Solomon Sea	1	3	0	—	0.1× / 7.4
Quakes · South Atlantic Ocean	1	3	0	—	0.6× / 1.6
Quakes · Tasman Sea	1	3	0	—	2.5× / 0.4
Cable ops · Celtic Sea	1	2.9	0	—	0.3× / 3.4
Other · Mediterranean Sea - Eastern Basin	1	2.9	1	2	1.7× / 0.6
Other · Inner Seas off the West Coast of Scotland	1	1.8	0	—	new / 0
Cable ops · Arafura Sea	1	1.6	1	1	new / 0
Ordnance · Tyrrhenian Sea	1	1.4	0	—	1.7× / 0.6
Exercises · Irish Sea and St. George's Channel	1	1.3	1	1	new / 0
Incidents · Celtic Sea	1	1	0	—	0.8× / 1.2
Nav aids · Gulf of Mexico	1	0.8	0	—	new / 0
Exercises · South Atlantic Ocean	1	0	0	—	0.2× / 4.2
Exercises · Aegean Sea	0	210	7	336	0.0× / 2.6
Nav aids · Bay of Bengallong running	0	210	7	426	0.0× / 0.4
Surveys · Baffin Baylong running	0	150	5	425	— / 0
Nav aids · Andaman or Burma Sea	0	90	3	153	0.0× / 0.6
Surveys · Beaufort Sea	0	90	3	327	— / 0
Wrecks · North Sea	0	90	3	50	0.0× / 0.6
Other · Persian Gulflong running	0	90	3	665	0.0× / 0.4
War risk · Persian Gulflong running	0	90	3	1,033	— / 0
Nav aids · South Pacific Ocean	0	90	3	221	0.0× / 3.2
Wrecks · Arabian Sea	0	60	2	167	0.0× / 0.2
Surveys · Arctic Ocean	0	60	2	327	— / 0
Nav aids · Irish Sea and St. George's Channel	0	60	2	133	0.0× / 2.6
Wrecks · Irish Sea and St. George's Channel	0	60	2	85	— / 0
Wrecks · Mediterranean Sea - Eastern Basin	0	60	2	155	0.0× / 0.2
Nav aids · North Pacific Ocean	0	60	2	123	0.0× / 0.6
Cable ops · North Sea	0	60	2	147	0.0× / 3.6
Surveys · Persian Gulf	0	60	2	216	0.0× / 0.4
Wrecks · Persian Gulf	0	60	2	41	0.0× / 0.2
Nav aids · Red Sea	0	60	2	120	0.0× / 0.2
Wrecks · South China Sea	0	60	2	94	0.0× / 1
Cable ops · Timor Sea	0	60	2	171	— / 0
Structures · Adriatic Sea	0	37.6	1	74	— / 0
Nav aids · Ionian Sealong running	0	31.7	1	372	0.0× / 0.6
Surveys · Balearic (Iberian Sea)long running	0	30	1	495	— / 0
Cable ops · Bass Strait	0	30	1	73	0.0× / 0.8
Nav aids · Bass Strait	0	30	1	143	0.0× / 0.8
Wrecks · Bass Strait	0	30	1	214	— / 0
Wrecks · Bay of Bengal	0	30	1	188	— / 0
Nav aids · Bismarck Sea	0	30	1	109	— / 0
Other · Black Sea	0	30	1	225	— / 0
Towing · Black Sea	0	30	1	225	— / 0
Surveys · Greenland Sealong running	0	30	1	643	— / 0
Incidents · Gulf of Guinea	0	30	1	48	— / 0
Surveys · Gulf of Guinea	0	30	1	40	0.0× / 0.2
Wrecks · Gulf of Mexico	0	30	1	64	— / 0
Ordnance · Gulf of Oman	0	30	1	154	0.0× / 0.4
Nav aids · Indian Ocean	0	30	1	70	0.0× / 0.6
Other · Indian Ocean	0	30	1	35	0.0× / 1.2
Wrecks · Laccadive Sea	0	30	1	140	— / 0
Nav aids · Malacca Strait	0	30	1	113	— / 0
Wrecks · Malacca Strait	0	30	1	53	— / 0
Nav aids · Mediterranean Sea - Eastern Basin	0	30	1	102	0.0× / 1
Debris · North Pacific Ocean	0	30	1	167	0.0× / 0.6
Restricted · North Pacific Ocean	0	30	1	180	— / 0
Nav aids · Persian Gulflong running	0	30	1	1,092	0.0× / 2
Incidents · Persian Gulf	0	30	1	33	0.0× / 0.2
Structures · Persian Gulf	0	30	1	43	— / 0
Nav aids · Philippine Sea	0	30	1	123	— / 0
Wrecks · Singapore Strait	0	30	1	190	— / 0
Nav aids · South China Sealong running	0	30	1	531	— / 0
Surveys · South Pacific Ocean	0	30	1	35	— / 0
Wrecks · South Pacific Ocean	0	30	1	184	0.0× / 0.4
Wrecks · Yellow Sea	0	30	1	167	— / 0
Exercises · Malacca Strait	0	29.7	0	—	0.0× / 0.6
Exercises · Japan Sea	0	29.6	0	—	— / 0
Incidents · Japan Sea	0	23.6	0	—	0.0× / 1
Surveys · Japan Sea	0	10	0	—	0.0× / 0.2
Restricted · North Atlantic Ocean	0	9.7	0	—	— / 0
Incidents · Mozambique Channel	0	9.6	0	—	0.0× / 0.4
Cable ops · North Atlantic Ocean	0	7.9	0	—	0.0× / 2.8
Cable ops · Bay of Bengal	0	6	0	—	0.0× / 1.2
Exercises · Red Sea	0	6	0	—	— / 0
Ordnance · Philippine Sea	0	4.1	0	—	0.0× / 1
Surveys · Irish Sea and St. George's Channel	0	0.8	0	—	0.0× / 0.4
Quakes · South China Sea	0	0.8	0	—	0.0× / 0.2
Cable ops · Irish Sea and St. George's Channel	0	0.5	0	—	0.0× / 2.4
Surveys · Sea of Okhotsk	0	0	0	—	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2004-11, 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.