Sea Ledger, October 2003

2003-10-01 to 2003-10-31 · archive

issued: 340
warning-days in force: 5,833
in force at month end: 200
sea × type cells: 180

baseline: same month, previous 5 years (2002-10, 2001-10, 2000-10, 1999-10, 1998-10)

By type

type	issued	warning-days	in force at end
Exercises	77	548.6	14
Incidents	54	824.4	26
Nav aids	49	1,884.8	69
Cable ops	40	526.9	18
Quakes	31	107.9	4
Derelicts	20	115.7	7
Other	18	448.3	14
Surveys	14	522.4	19
Ordnance	7	50.6	2
Containers	7	26.5	3
Missiles	6	64.6	2
Spills	6	58	3
Icebergs	5	45.2	0
Debris	2	12.4	0
Structures	1	23.8	1
Restricted	1	33.3	2
Wrecks	1	456.7	13
Towing	1	21.3	1
War risk	0	62	2

By sea and type · 180 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Ocean	19	69.9	2	77	0.8× / 25.4
Exercises · Laccadive Seasurge	13	74.5	1	35	8.1× / 1.6
Quakes · North Pacific Oceansurge	13	41.7	1	33	2.2× / 5.8
Exercises · North Atlantic Ocean	10	93	4	63	1.4× / 7.4
Exercises · Black Seasurge	10	63	0	—	2.2× / 4.6
Incidents · North Pacific Ocean	9	272.5	7	69	1.7× / 5.4
Nav aids · South Atlantic Ocean	8	214.7	6	126	1.4× / 5.8
Exercises · Bay of Bengalsurge	7	35.8	1	28	8.8× / 0.8
Incidents · South Atlantic Oceansurge	7	30.2	3	35	2.2× / 3.2
Missiles · North Pacific Ocean	6	62	2	36	1.4× / 4.2
Incidents · Coral Sea	6	33.9	2	17	1.8× / 3.4
Exercises · Arabian Seasurge	6	19.5	1	28	3.8× / 1.6
Nav aids · Celtic Seasurge	5	130.7	6	203	4.2× / 1.2
Cable ops · Arabian Seasurge	5	124.7	5	50	4.2× / 1.2
Incidents · North Atlantic Ocean	5	56.7	2	36	0.8× / 6.6
Exercises · Mediterranean Sea - Eastern Basinsurge	5	50	2	36	2.5× / 2
Derelicts · North Atlantic Oceansurgelong running	5	46.9	3	393	4.2× / 1.2
Quakes · South Pacific Ocean	5	25.5	0	—	0.4× / 12.2
Incidents · South Pacific Ocean	5	23.1	0	—	1.0× / 5
Incidents · South China Sea	4	100.3	4	51	1.8× / 2.2
Nav aids · North Sea	4	93	2	71	0.5× / 7.8
Incidents · Philippine Sea	4	91.3	2	62	1.1× / 3.6
Nav aids · Tyrrhenian Sea	4	33.7	2	32	1.0× / 4
Exercises · Adriatic Sea	4	20.1	0	—	0.9× / 4.2
Derelicts · Timor Seasurge	4	16.7	1	14	6.7× / 0.6
Exercises · North Pacific Ocean	4	15.1	0	—	0.8× / 4.8
Surveys · Baffin Baynew	3	89.1	3	29	new / 0
Nav aids · Mozambique Channelsurge	3	78	4	126	15× / 0.2
Cable ops · Mediterranean Sea - Eastern Basinsurge	3	60.9	3	67	2.1× / 1.4
Nav aids · Great Australian Bightsurge	3	50.3	2	24	15× / 0.2
Surveys · South Atlantic Ocean	3	46	3	31	1.3× / 2.4
Cable ops · Bay of Bengalsurge	3	32.3	0	—	15× / 0.2
Icebergs · South Atlantic Ocean	3	31.7	0	—	0.9× / 3.4
Incidents · Mediterranean Sea - Eastern Basinsurge	3	28.9	0	—	2.1× / 1.4
Derelicts · Tyrrhenian Seasurge	3	26.4	1	13	15× / 0.2
Containers · North Pacific Oceansurge	3	19.4	0	—	15× / 0.2
Other · North Atlantic Ocean	3	13.3	0	—	1.9× / 1.6
Ordnance · Greenland Seasurge	3	9.6	0	—	3.8× / 0.8
Quakes · Solomon Sea	3	9	0	—	1.5× / 2
Exercises · Ionian Sea	3	6.7	0	—	1.9× / 1.6
Nav aids · Solomon Seanewlong running	2	156.7	7	614	new / 0
Nav aids · South Pacific Ocean	2	115.5	3	342	0.9× / 2.2
Cable ops · Eastern China Sea	2	74.6	3	44	1.4× / 1.4
Other · Japan Sea	2	71.1	2	35	1.7× / 1.2
Nav aids · Inner Seas off the West Coast of Scotland	2	48.7	1	88	1.3× / 1.6
Incidents · Indian Ocean	2	48.6	0	—	0.5× / 4
Nav aids · Coral Sea	2	43.9	2	222	0.7× / 3
Cable ops · Gulf of Guineanew	2	42.6	0	—	new / 0
Nav aids · English Channel	2	41.5	3	298	0.6× / 3.4
Surveys · North Atlantic Ocean	2	31	1	30	5.0× / 0.4
Spills · Gulf of Mexico	2	23	1	15	2.0× / 1
Surveys · Japan Seanew	2	22.8	1	21	new / 0
Other · North Sea	2	22.1	1	13	2.5× / 0.8
Nav aids · Japan Seanew	2	18.6	2	14	new / 0
Cable ops · North Atlantic Ocean	2	16.9	0	—	0.9× / 2.2
Incidents · Timor Seanew	2	14.6	1	19	new / 0
Icebergs · Southern Ocean	2	13.5	0	—	1.3× / 1.6
Exercises · Mediterranean Sea - Western Basin	2	11.4	0	—	1.7× / 1.2
Exercises · Persian Gulf	2	10.7	0	—	2.5× / 0.8
Exercises · South Pacific Ocean	2	9.5	0	—	2.5× / 0.8
Exercises · Tyrrhenian Sea	2	8.3	2	32	2.0× / 1
Ordnance · Persian Gulf	2	8	0	—	3.3× / 0.6
Other · Indian Ocean	2	7.8	0	—	1.7× / 1.2
Derelicts · South Atlantic Ocean	2	7.3	0	—	2.5× / 0.8
Exercises · Andaman or Burma Seanew	2	6.9	0	—	new / 0
Quakes · Indian Ocean	2	5.1	1	14	1.3× / 1.6
Quakes · Bismarck Sea	2	4.7	1	7	3.3× / 0.6
Nav aids · Indian Ocean	2	4.5	1	5	1.7× / 1.2
Other · North Pacific Ocean	2	3.8	0	—	0.9× / 2.2
Derelicts · Mediterranean Sea - Eastern Basinnew	2	1.9	2	1	new / 0
Containers · North Atlantic Ocean	2	0.6	2	0	1.7× / 1.2
Derelicts · English Channelnew	2	0.5	0	—	new / 0
Nav aids · Gulf of Suez	1	168.5	6	204	5.0× / 0.2
Nav aids · Bay of Bengal	1	92.7	3	182	1.7× / 0.6
Nav aids · Persian Gulflong running	1	69.6	2	696	1.3× / 0.8
Cable ops · South China Sea	1	47.4	1	51	0.8× / 1.2
Exercises · Malacca Strait	1	35.3	1	35	2.5× / 0.4
Other · Yellow Sea	1	35	1	35	0.6× / 1.6
Incidents · Arabian Sea	1	33.8	2	31	1.3× / 0.8
Incidents · Bay of Bengal	1	33	0	—	2.5× / 0.4
Surveys · Indian Ocean	1	31	1	35	5.0× / 0.2
Other · Sea of Marmara	1	31	1	32	new / 0
Other · South Pacific Ocean	1	26.9	1	26	5.0× / 0.2
Other · Coral Sea	1	24.6	1	24	2.5× / 0.4
Structures · South Atlantic Ocean	1	23.8	1	23	new / 0
Other · Mediterranean Sea - Eastern Basin	1	23.4	0	—	5.0× / 0.2
Ordnance · Sea of Okhotsk	1	23.4	1	23	new / 0
Wrecks · Mediterranean Sea - Eastern Basin	1	21.6	0	—	new / 0
Towing · Black Sea	1	21.3	1	21	new / 0
Surveys · Adriatic Sea	1	17.4	1	17	new / 0
Incidents · Adriatic Sea	1	15.9	1	15	1.3× / 0.8
Surveys · Gulf of Suez	1	15.4	1	15	new / 0
Spills · North Atlantic Ocean	1	15	0	—	0.8× / 1.2
Spills · Bering Sea	1	14	0	—	new / 0
Cable ops · Great Australian Bight	1	11.5	1	11	new / 0
Incidents · Mozambique Channel	1	11.2	1	11	new / 0
Ordnance · North Atlantic Ocean	1	9.6	1	9	0.3× / 4
Exercises · Red Sea	1	8.3	0	—	new / 0
Exercises · Japan Sea	1	7.9	0	—	0.7× / 1.4
Surveys · Mediterranean Sea - Eastern Basin	1	7.7	1	7	0.6× / 1.8
Exercises · Alboran Sea	1	7.3	0	—	new / 0
Derelicts · North Pacific Ocean	1	7	0	—	0.8× / 1.2
Derelicts · South Pacific Ocean	1	7	0	—	0.8× / 1.2
Cable ops · Laccadive Sea	1	6.5	1	6	5.0× / 0.2
Containers · Tyrrhenian Sea	1	6.4	0	—	new / 0
Debris · Arafura Sea	1	6.3	0	—	new / 0
Debris · North Atlantic Ocean	1	6.1	0	—	1.0× / 1
Nav aids · North Pacific Ocean	1	5.5	0	—	1.7× / 0.6
Nav aids · Gulf of Aqaba	1	4.5	1	4	new / 0
Incidents · Ligurian Sea	1	4.2	1	4	new / 0
Quakes · Southern Ocean	1	4.1	1	31	new / 0
Nav aids · Ionian Sea	1	3.9	0	—	5.0× / 0.2
Exercises · Indian Ocean	1	3.3	0	—	5.0× / 0.2
Nav aids · Mediterranean Sea - Western Basin	1	3.3	1	3	5.0× / 0.2
Quakes · Banda Sea	1	3	0	—	0.5× / 2
Quakes · Coral Sea	1	3	0	—	0.8× / 1.2
Quakes · Molukka Sea	1	3	0	—	1.7× / 0.6
Quakes · South Atlantic Ocean	1	3	0	—	0.5× / 2
Quakes · South China Sea	1	3	0	—	1.7× / 0.6
Spills · Southern Ocean	1	3	1	3	new / 0
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	3	1	3	5.0× / 0.2
Cable ops · Aegean Sea	1	2.3	1	2	new / 0
Restricted · North Atlantic Ocean	1	2.3	1	2	new / 0
Incidents · Tasman Sea	1	1.2	0	—	1.0× / 1
Other · Inner Seas off the West Coast of Scotland	1	0.9	0	—	new / 0
Nav aids · Irish Sea and St. George's Channel	1	0.8	0	—	1.3× / 0.8
Incidents · Great Australian Bight	1	0.5	0	—	2.5× / 0.4
Containers · Caribbean Sea	1	0.1	1	0	new / 0
Other · English Channel	1	0	1	0	1.7× / 0.6
Nav aids · Laccadive Sea	0	93	3	182	— / 0
Wrecks · North Sea	0	93	3	294	— / 0
Nav aids · Red Sea	0	93	3	325	0.0× / 0.2
Nav aids · Mediterranean Sea - Eastern Basin	0	78.7	2	106	— / 0
Exercises · Aegean Sea	0	62	2	304	0.0× / 3
Nav aids · Arabian Sea	0	62	2	161	— / 0
Wrecks · Baltic Sealong running	0	62	2	1,036	— / 0
Surveys · North Sea	0	62	2	308	0.0× / 4.4
War risk · Persian Gulflong running	0	62	2	637	— / 0
Cable ops · Persian Gulf	0	35.3	1	137	0.0× / 1.2
Surveys · Greenland Sea	0	33	1	247	— / 0
Wrecks · Arabian Sea	0	31	1	324	— / 0
Surveys · Balearic (Iberian Sea)	0	31	1	99	— / 0
Surveys · Baltic Sea	0	31	1	125	— / 0
Other · Black Sea	0	31	1	233	0.0× / 0.2
Wrecks · English Channellong running	0	31	1	743	0.0× / 1.2
Other · Greenland Sealong running	0	31	1	1,164	— / 0
Surveys · Gulf of Guinea	0	31	1	58	— / 0
Restricted · Indian Ocean	0	31	1	143	— / 0
Wrecks · Japan Sea	0	31	1	275	— / 0
Wrecks · Java Sea	0	31	1	176	— / 0
Wrecks · Kattegatlong running	0	31	1	984	— / 0
Other · Laccadive Sea	0	31	1	340	— / 0
Nav aids · Malacca Strait	0	31	1	270	0.0× / 0.2
Nav aids · North Atlantic Ocean	0	31	1	205	0.0× / 2.8
Wrecks · North Atlantic Ocean	0	31	1	330	— / 0
Other · Persian Gulf	0	31	1	269	0.0× / 0.2
Surveys · Persian Gulf	0	31	1	144	— / 0
Nav aids · Savu Sealong running	0	31	1	605	— / 0
Other · Sea of Okhotsk	0	31	1	232	— / 0
Wrecks · Skagerraklong running	0	31	1	1,087	— / 0
Nav aids · South China Sea	0	31	1	135	— / 0
Other · South China Sea	0	31	1	83	0.0× / 0.4
Nav aids · Southern Ocean	0	31	1	35	— / 0
Wrecks · Sulu Sea	0	31	1	112	— / 0
Surveys · Philippine Sea	0	30	0	—	0.0× / 0.6
Wrecks · Bay of Bengal	0	24.5	0	—	— / 0
Incidents · Malacca Strait	0	24.5	0	—	0.0× / 0.2
Nav aids · Sea of Okhotsk	0	24.5	0	—	— / 0
Wrecks · Persian Gulf	0	7.6	0	—	0.0× / 0.6
Surveys · Tyrrhenian Sea	0	7	0	—	0.0× / 0.8
Surveys · Bay of Biscay	0	6	0	—	0.0× / 0.2
Quakes · Tasman Sea	0	2.8	0	—	— / 0
Missiles · South Pacific Ocean	0	2.6	0	—	— / 0
Other · Bass Strait	0	2.4	0	—	0.0× / 0.2
Derelicts · Gulf of Mexico	0	2	0	—	0.0× / 0.4
Cable ops · Sulu Sea	0	2	0	—	— / 0
Surveys · Bering Sea	0	0	0	—	— / 0
Icebergs · Indian Ocean	0	0	0	—	0.0× / 0.4
Cable ops · Sea of Okhotsk	0	0	0	—	— / 0
Towing · Sea of Okhotsk	0	0	0	—	— / 0

Cite: seahazards.com Sea Ledger, 2003-10, 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.