Sea Ledger, September 2003

2003-09-01 to 2003-09-30 · archive

issued: 355
warning-days in force: 5,553
in force at month end: 183
sea × type cells: 175

baseline: same month, previous 5 years (2002-09, 2001-09, 2000-09, 1999-09, 1998-09)

By type

type	issued	warning-days	in force at end
Exercises	83	644.4	18
Incidents	62	904.1	27
Quakes	53	146.8	10
Nav aids	44	1,505.9	54
Cable ops	36	448.8	19
Derelicts	16	106.6	3
Surveys	15	485.1	15
Other	13	458.3	11
Icebergs	7	34.5	3
Debris	7	29.8	0
Missiles	6	60.7	3
Ordnance	5	36.8	0
Spills	4	102	1
Restricted	2	32.9	1
Wrecks	1	447.2	15
Containers	1	6.6	0
War risk	0	60	2
Towing	0	30	1
Structures	0	12.5	0

By sea and type · 175 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Ocean	19	74.9	3	46	0.8× / 24.4
Exercises · Black Seasurge	18	129.1	3	54	6.0× / 3
Quakes · North Pacific Oceansurge	17	50	4	31	4.5× / 3.8
Incidents · North Pacific Ocean	14	324.6	11	71	1.4× / 9.8
Exercises · North Atlantic Ocean	12	96.1	3	32	1.6× / 7.4
Quakes · South Pacific Ocean	12	25.5	4	28	1.1× / 11.4
Incidents · Philippine Seasurge	11	101	4	68	2.9× / 3.8
Exercises · Laccadive Seasurge	11	64	2	34	6.9× / 1.6
Incidents · South Atlantic Oceansurge	8	22.5	1	22	3.6× / 2.2
Nav aids · Celtic Seasurge	6	127.1	4	172	3.0× / 2
Incidents · Indian Ocean	6	125.1	4	61	1.9× / 3.2
Exercises · North Pacific Ocean	6	25.3	0	—	0.8× / 7.2
Nav aids · South Atlantic Ocean	5	174.1	5	222	1.1× / 4.4
Nav aids · North Sea	5	62.7	3	40	1.1× / 4.4
Missiles · North Pacific Ocean	5	60	2	34	1.1× / 4.4
Exercises · Persian Gulfnew	5	25.1	1	20	new / 0
Icebergs · South Atlantic Ocean	5	21	2	36	1.3× / 3.8
Derelicts · South Atlantic Oceansurge	5	18.9	1	28	6.3× / 0.8
Quakes · Indian Oceansurge	5	15	0	—	2.1× / 2.4
Incidents · South Pacific Ocean	4	109.5	0	—	1.1× / 3.8
Exercises · Mediterranean Sea - Eastern Basinsurge	4	47.9	2	31	2.0× / 2
Surveys · North Pacific Oceannew	4	24.2	0	—	new / 0
Incidents · Mediterranean Sea - Eastern Basinsurge	4	14.9	0	—	10× / 0.4
Exercises · Arabian Seasurge	4	12.6	0	—	3.3× / 1.2
Quakes · South Atlantic Oceansurge	4	12.4	0	—	5.0× / 0.8
Exercises · Bay of Bengalsurge	4	11.4	0	—	3.3× / 1.2
Debris · North Pacific Oceansurge	4	9.9	0	—	20× / 0.2
Nav aids · South Pacific Ocean	3	130.1	4	311	1.1× / 2.8
Cable ops · Arabian Seasurge	3	36.2	2	19	7.5× / 0.4
Incidents · Bay of Bengalsurge	3	30.6	2	29	15× / 0.2
Cable ops · Bay of Bengalsurge	3	26.5	1	26	7.5× / 0.4
Cable ops · Eastern China Seasurge	3	22.7	3	13	2.5× / 1.2
Exercises · Japan Seasurge	3	21.8	0	—	2.1× / 1.4
Exercises · Tyrrhenian Sea	3	15.6	1	63	0.9× / 3.2
Derelicts · North Pacific Oceansurge	3	13.1	0	—	7.5× / 0.4
Quakes · North Atlantic Oceansurge	3	9	0	—	7.5× / 0.4
Quakes · Solomon Sea	3	9	0	—	1.3× / 2.4
Cable ops · North Sea	3	8.5	0	—	1.5× / 2
Exercises · Ionian Sea	3	7.3	1	14	1.7× / 1.8
Nav aids · Indian Oceansurge	3	3.9	0	—	3.8× / 0.8
Nav aids · Irish Sea and St. George's Channel	3	1.1	0	—	1.5× / 2
Other · Japan Sea	2	68.2	2	35	2.0× / 1
Incidents · North Atlantic Ocean	2	58.3	1	50	0.5× / 3.8
Nav aids · Mediterranean Sea - Eastern Basin	2	54.5	3	75	10× / 0.2
Spills · Gulf of Mexico	2	52	0	—	0.8× / 2.6
Nav aids · Laccadive Seanew	2	41	3	151	new / 0
Spills · North Atlantic Ocean	2	38	1	41	1.1× / 1.8
Cable ops · South China Sea	2	37.9	2	20	1.7× / 1.2
Other · Yellow Sea	2	34.1	1	34	3.3× / 0.6
Surveys · Philippine Sea	2	32.3	1	28	1.7× / 1.2
Surveys · Tyrrhenian Sea	2	29.5	1	25	1.3× / 1.6
Incidents · South China Sea	2	26.3	2	20	0.6× / 3.2
Surveys · South Atlantic Ocean	2	20	1	30	1.4× / 1.4
Debris · North Seanew	2	13.3	0	—	new / 0
Other · Labrador Sea	2	12.4	0	—	2.5× / 0.8
Other · North Atlantic Ocean	2	12.3	0	—	1.7× / 1.2
Nav aids · Sea of Okhotsknew	2	12.2	1	12	new / 0
Exercises · Philippine Seanew	2	11.3	0	—	new / 0
Exercises · South Atlantic Ocean	2	8.5	0	—	2.0× / 1
Exercises · Gulf of Mexico	2	6.6	0	—	10× / 0.2
Derelicts · Philippine Sea	2	5.6	0	—	2.5× / 0.8
Derelicts · Gulf of Mexico	2	5.1	1	5	5.0× / 0.4
Quakes · Tasman Seanew	2	3.2	1	26	new / 0
Other · English Channelnew	2	3	0	—	new / 0
Restricted · South Atlantic Oceannew	2	2.9	0	—	new / 0
Nav aids · Gulf of Suez	1	148.3	5	173	new / 0
Nav aids · Red Sea	1	87.6	3	294	5.0× / 0.2
Nav aids · Persian Gulflong running	1	76.6	3	665	1.3× / 0.8
Nav aids · Mozambique Channel	1	60	2	95	1.7× / 0.6
Cable ops · Mediterranean Sea - Eastern Basin	1	58.6	2	36	1.0× / 1
Other · Sea of Marmara	1	58.5	1	80	new / 0
Derelicts · North Atlantic Ocean	1	42.5	1	362	0.5× / 2
Nav aids · English Channel	1	38.1	1	267	0.6× / 1.6
Nav aids · Bay of Bengal	1	36.5	2	151	new / 0
Exercises · Malacca Strait	1	34.2	1	34	2.5× / 0.4
Cable ops · North Atlantic Ocean	1	33.6	1	55	0.2× / 6.4
Nav aids · Coral Sea	1	33.1	1	191	0.6× / 1.6
Other · Indian Ocean	1	31.9	0	—	5.0× / 0.2
Surveys · Gulf of Guinea	1	31.4	1	124	5.0× / 0.2
Cable ops · Persian Gulf	1	31.3	2	106	1.3× / 0.8
Nav aids · North Atlantic Ocean	1	30.8	1	174	0.3× / 3.8
Surveys · Bering Sea	1	27.6	1	27	new / 0
Wrecks · Persian Gulf	1	27.2	1	30	new / 0
Surveys · Bay of Biscay	1	24.6	1	33	5.0× / 0.2
Incidents · Tyrrhenian Sea	1	21	0	—	new / 0
Incidents · Malacca Strait	1	19.6	1	19	new / 0
Nav aids · Southern Ocean	1	17.2	1	255	new / 0
Surveys · Mediterranean Sea - Western Basin	1	17.1	0	—	2.5× / 0.4
Exercises · Inner Seas off the West Coast of Scotland	1	16.5	0	—	new / 0
Exercises · Mediterranean Sea - Western Basin	1	11.3	1	11	0.4× / 2.8
Other · North Sea	1	9.2	0	—	0.8× / 1.2
Derelicts · Celtic Sea	1	7	0	—	5.0× / 0.2
Icebergs · Southern Ocean	1	6.9	0	—	0.5× / 2
Derelicts · South China Sea	1	6.7	0	—	1.3× / 0.8
Icebergs · Indian Ocean	1	6.6	1	6	5.0× / 0.2
Debris · North Atlantic Ocean	1	6.6	0	—	1.3× / 0.8
Containers · South Pacific Ocean	1	6.6	0	—	2.5× / 0.4
Nav aids · Ionian Sea	1	6.3	0	—	5.0× / 0.2
Exercises · Andaman or Burma Sea	1	5.3	0	—	5.0× / 0.2
Surveys · Indian Ocean	1	4.6	1	4	new / 0
Quakes · Coral Sea	1	4	0	—	0.6× / 1.6
Nav aids · Mediterranean Sea - Western Basin	1	3.2	0	—	1.0× / 1
Ordnance · South China Sea	1	3.1	0	—	new / 0
Incidents · Bismarck Sea	1	3	0	—	2.5× / 0.4
Quakes · Eastern China Sea	1	3	0	—	5.0× / 0.2
Quakes · Gulf of Tomini	1	3	0	—	2.5× / 0.4
Quakes · Malacca Strait	1	3	0	—	new / 0
Quakes · Philippine Sea	1	3	0	—	0.3× / 3.4
Quakes · South China Sea	1	3	0	—	new / 0
Derelicts · Arafura Sea	1	1.7	0	—	new / 0
Nav aids · Tyrrhenian Sea	1	1.5	1	1	0.4× / 2.6
Ordnance · Indian Ocean	1	1.3	0	—	new / 0
Ordnance · Philippine Sea	1	1.3	0	—	2.5× / 0.4
Ordnance · Eastern China Sea	1	1.1	0	—	1.3× / 0.8
Incidents · Arafura Sea	1	1	0	—	1.3× / 0.8
Incidents · North Sea	1	0.8	0	—	5.0× / 0.2
Incidents · Arabian Sea	1	0.7	1	0	0.8× / 1.2
Missiles · South Pacific Ocean	1	0.7	1	0	new / 0
Quakes · Southern Ocean	1	0.7	1	0	1.7× / 0.6
Ordnance · Tyrrhenian Sea	1	0.6	0	—	2.5× / 0.4
Nav aids · Tasman Sea	1	0.4	0	—	0.6× / 1.6
Incidents · Gulf of Guinea	1	0.2	0	—	new / 0
Incidents · Coral Sea	1	0.1	0	—	0.3× / 3
Nav aids · Solomon Sealong running	0	150	5	583	— / 0
Surveys · Greenland Sea	0	90	3	216	— / 0
Wrecks · North Sea	0	90	3	263	0.0× / 0.4
Exercises · Aegean Sea	0	60	2	273	0.0× / 4.6
Nav aids · Arabian Sea	0	60	2	130	0.0× / 0.4
Wrecks · Baltic Sealong running	0	60	2	1,005	— / 0
Surveys · North Sea	0	60	2	277	0.0× / 3.6
War risk · Persian Gulflong running	0	60	2	606	— / 0
Other · Black Sea	0	48.4	1	202	— / 0
Incidents · Adriatic Sea	0	44.9	0	—	— / 0
Wrecks · Arabian Sea	0	30	1	293	0.0× / 0.2
Surveys · Balearic (Iberian Sea)	0	30	1	68	— / 0
Surveys · Baltic Sea	0	30	1	94	— / 0
Other · Bass Straitlong running	0	30	1	543	— / 0
Wrecks · Bay of Bengal	0	30	1	110	— / 0
Wrecks · English Channellong running	0	30	1	712	0.0× / 0.2
Other · Greenland Sealong running	0	30	1	1,133	— / 0
Cable ops · Gulf of Guinea	0	30	1	36	— / 0
Exercises · Indian Ocean	0	30	1	95	0.0× / 1.6
Restricted · Indian Ocean	0	30	1	112	— / 0
Nav aids · Inner Seas off the West Coast of Scotland	0	30	1	57	0.0× / 1.6
Wrecks · Japan Sea	0	30	1	244	— / 0
Wrecks · Java Sea	0	30	1	145	— / 0
Wrecks · Kattegatlong running	0	30	1	953	— / 0
Other · Laccadive Sea	0	30	1	309	— / 0
Nav aids · Malacca Strait	0	30	1	239	0.0× / 0.2
Wrecks · North Atlantic Ocean	0	30	1	299	— / 0
Other · Persian Gulf	0	30	1	238	0.0× / 0.8
Surveys · Persian Gulf	0	30	1	113	— / 0
Nav aids · Savu Sealong running	0	30	1	574	— / 0
Cable ops · Sea of Okhotsk	0	30	1	63	— / 0
Other · Sea of Okhotsk	0	30	1	201	— / 0
Towing · Sea of Okhotsk	0	30	1	91	— / 0
Wrecks · Skagerraklong running	0	30	1	1,056	— / 0
Nav aids · South China Sea	0	30	1	104	— / 0
Other · South China Sea	0	30	1	52	— / 0
Cable ops · Sulu Sea	0	30	1	33	— / 0
Wrecks · Sulu Sea	0	30	1	81	— / 0
Nav aids · Andaman or Burma Sea	0	29.6	0	—	0.0× / 0.4
Ordnance · Ligurian Sea	0	29.4	0	—	— / 0
Cable ops · Adriatic Sea	0	22.4	0	—	0.0× / 0.2
Surveys · Black Sea	0	21.4	0	—	0.0× / 0.4
Structures · North Sea	0	12.5	0	—	— / 0
Spills · Gulf of Alaska	0	12	0	—	0.0× / 0.6
Surveys · Sea of Okhotsk	0	8	0	—	0.0× / 0.2
Derelicts · Mediterranean Sea - Eastern Basin	0	6	0	—	0.0× / 0.4
Exercises · Sea of Okhotsk	0	4.5	0	—	0.0× / 0.4
Surveys · Mediterranean Sea - Eastern Basin	0	4.4	0	—	0.0× / 1.8
Cable ops · Indian Ocean	0	3.2	0	—	— / 0
Quakes · Japan Sea	0	3	0	—	— / 0
Cable ops · Yellow Sea	0	3	0	—	0.0× / 0.2
Other · Malacca Strait	0	0.3	0	—	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2003-09, 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.