Sea Ledger, December 2003

2003-12-01 to 2003-12-31 · archive

issued: 357
warning-days in force: 6,494
in force at month end: 212
sea × type cells: 187

baseline: same month, previous 5 years (2002-12, 2001-12, 2000-12, 1999-12, 1998-12)

By type

type	issued	warning-days	in force at end
Incidents	69	933.8	37
Exercises	63	469.7	20
Nav aids	55	2,211.3	70
Quakes	41	123.6	4
Cable ops	35	484.1	16
Derelicts	20	127.6	4
Other	19	491.5	16
Spills	14	210	3
Surveys	10	596.4	16
Icebergs	7	35.1	2
Wrecks	6	454.7	15
Debris	6	35	0
Containers	5	27	1
Missiles	4	55	2
Ordnance	2	73.3	2
Restricted	1	42.8	1
Structures	0	31	1
War risk	0	62	2
Towing	0	30	0

By sea and type · 187 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Quakes · South Pacific Oceansurge	18	57.2	1	33	2.0× / 8.8
Cable ops · South Atlantic Ocean	14	81.3	1	50	0.5× / 26.2
Incidents · Philippine Seasurge	13	88.2	4	63	4.1× / 3.2
Exercises · Laccadive Seasurge	13	67.3	2	34	5.4× / 2.4
Incidents · South Atlantic Oceansurge	9	156.7	4	69	2.8× / 3.2
Exercises · North Atlantic Ocean	9	113.6	3	124	1.3× / 7
Nav aids · North Atlantic Oceansurge	9	96.1	3	266	5.0× / 1.8
Quakes · North Pacific Oceansurge	9	22.6	3	28	2.6× / 3.4
Cable ops · Arabian Seasurge	8	168.6	7	85	13× / 0.6
Incidents · South Pacific Ocean	8	80.4	6	44	1.5× / 5.2
Nav aids · South Atlantic Ocean	7	204.9	6	187	1.5× / 4.8
Incidents · North Pacific Ocean	7	202.1	4	65	0.9× / 7.6
Exercises · Aegean Seasurgelong running	7	69.3	9	365	3.5× / 2
Exercises · Ionian Seasurge	7	12.9	2	30	12× / 0.6
Nav aids · Solomon Seanewlong running	6	349	11	675	new / 0
Spills · North Atlantic Oceansurge	6	84	0	—	3.3× / 1.8
Icebergs · South Atlantic Ocean	6	29	2	29	1.1× / 5.4
Surveys · North Atlantic Oceansurge	6	25.8	0	—	30× / 0.2
Exercises · Bay of Bengal	6	24.7	1	33	1.8× / 3.4
Nav aids · North Sea	6	15	1	96	0.9× / 6.4
Spills · Gulf of Mexicosurge	5	100	0	—	2.5× / 2
Derelicts · North Atlantic Oceansurgelong running	5	60.5	2	454	2.3× / 2.2
Incidents · North Atlantic Ocean	5	53.4	2	60	0.8× / 6
Nav aids · Mediterranean Sea - Western Basinsurge	5	42.3	2	28	3.6× / 1.4
Nav aids · Coral Seasurge	4	75.3	2	283	2.0× / 2
Incidents · Mediterranean Sea - Eastern Basinsurge	4	64	2	49	3.3× / 1.2
Missiles · North Pacific Ocean	4	55	2	35	0.8× / 4.8
Incidents · Bay of Bengalsurge	4	47.1	4	12	20× / 0.2
Exercises · Black Seasurge	4	44.5	0	—	5.0× / 0.8
Exercises · North Pacific Ocean	4	22.9	0	—	0.6× / 6.4
Exercises · Arabian Seasurge	4	13.7	0	—	2.5× / 1.6
Wrecks · North Seasurge	3	105.4	4	355	2.5× / 1.2
Surveys · Mediterranean Sea - Eastern Basinsurge	3	90.7	3	51	5.0× / 0.6
Exercises · Mediterranean Sea - Eastern Basinsurge	3	50	0	—	2.5× / 1.2
Other · Great Australian Bightsurge	3	27.6	1	29	15× / 0.2
Cable ops · North Sea	3	24	0	—	1.0× / 3
Debris · North Atlantic Oceansurge	3	16.9	0	—	5.0× / 0.6
Quakes · Philippine Seasurge	3	9	0	—	2.1× / 1.4
Derelicts · South Atlantic Oceansurge	3	1.5	0	—	5.0× / 0.6
Nav aids · Bay of Bengal	2	100.5	3	243	10× / 0.2
Nav aids · Laccadive Sea	2	99	3	243	10× / 0.2
Incidents · Coral Sea	2	68.4	2	45	0.7× / 2.8
Other · Japan Sea	2	66.2	2	35	1.7× / 1.2
Incidents · South China Sea	2	62	2	71	0.4× / 4.8
Nav aids · Mediterranean Sea - Eastern Basinnew	2	49.8	2	167	new / 0
Nav aids · Ionian Seanew	2	36.5	1	37	new / 0
Cable ops · Bay of Bengal	2	29	2	21	10× / 0.2
Wrecks · South Atlantic Oceannew	2	24.1	1	28	new / 0
Debris · Philippine Seanew	2	11.9	0	—	new / 0
Exercises · South Pacific Ocean	2	10.5	0	—	0.9× / 2.2
Derelicts · North Pacific Ocean	2	8.4	0	—	2.5× / 0.8
Incidents · Timor Sea	2	7	0	—	10× / 0.2
Derelicts · Arabian Seanew	2	6.9	2	4	new / 0
Derelicts · Mediterranean Sea - Eastern Basin	2	6.7	0	—	1.4× / 1.4
Quakes · Solomon Sea	2	6	0	—	1.0× / 2
Quakes · South Atlantic Ocean	2	6	0	—	1.0× / 2
Incidents · Indian Ocean	2	4.5	1	22	0.8× / 2.6
Derelicts · Bay of Bengalnew	2	4.1	0	—	new / 0
Cable ops · English Channel	2	4.1	0	—	3.3× / 0.6
Other · North Pacific Ocean	2	1.3	0	—	10× / 0.2
Other · Irish Sea and St. George's Channelnew	2	1.2	0	—	new / 0
Nav aids · English Channel	1	89.2	3	359	0.1× / 7
Nav aids · South Pacific Oceanlong running	1	88.9	3	403	0.8× / 1.2
Nav aids · Mozambique Channel	1	68.4	2	68	2.5× / 0.4
Other · Persian Gulf	1	63.5	3	330	5.0× / 0.2
Nav aids · Persian Gulflong running	1	62.9	2	757	1.7× / 0.6
Surveys · Philippine Sea	1	51.6	1	33	2.5× / 0.4
Other · Yellow Sea	1	33.1	1	35	1.3× / 0.8
Nav aids · Arabian Sea	1	33	1	210	5.0× / 0.2
Nav aids · Alboran Sea	1	32.1	2	39	5.0× / 0.2
Nav aids · Inner Seas off the West Coast of Scotland	1	31.1	1	149	0.6× / 1.6
Cable ops · Makassar Strait	1	31	1	47	new / 0
Cable ops · Persian Gulf	1	30.6	0	—	5.0× / 0.2
Ordnance · Arabian Sea	1	28.3	1	28	new / 0
Other · Celtic Sea	1	26.6	1	26	2.5× / 0.4
Nav aids · Tasman Sea	1	24.5	1	24	0.6× / 1.6
Nav aids · Bass Strait	1	22.1	1	22	1.0× / 1
Incidents · Ionian Sea	1	19.3	1	19	5.0× / 0.2
Incidents · Solomon Sea	1	18.7	1	18	2.5× / 0.4
Other · Ionian Sea	1	18.3	1	18	2.5× / 0.4
Incidents · Arafura Sea	1	16.3	1	16	2.5× / 0.4
Ordnance · Gulf of Mexico	1	14	0	—	5.0× / 0.2
Spills · North Pacific Ocean	1	14	1	43	1.7× / 0.6
Restricted · Persian Gulf	1	11.8	0	—	new / 0
Exercises · Persian Gulf	1	10.3	0	—	new / 0
Spills · Caribbean Sea	1	10	1	10	2.5× / 0.4
Incidents · Mozambique Channel	1	9.1	1	72	5.0× / 0.2
Incidents · Tyrrhenian Sea	1	8.1	1	8	new / 0
Cable ops · Celtic Sea	1	7.9	0	—	0.3× / 3.2
Cable ops · North Atlantic Ocean	1	7.7	0	—	0.3× / 3.8
Incidents · Eastern China Sea	1	7.6	1	7	5.0× / 0.2
Derelicts · Arafura Sea	1	6.7	0	—	new / 0
Derelicts · Tyrrhenian Sea	1	6.7	0	—	new / 0
Incidents · Gulf of Mexico	1	6.6	0	—	new / 0
Containers · Philippine Sea	1	6.5	0	—	new / 0
Other · Indian Ocean	1	6.4	0	—	2.5× / 0.4
Derelicts · Coral Sea	1	6.3	0	—	2.5× / 0.4
Containers · Mediterranean Sea - Eastern Basin	1	6.3	0	—	new / 0
Containers · North Atlantic Ocean	1	6.3	0	—	0.6× / 1.8
Other · North Sea	1	6.3	0	—	1.3× / 0.8
Containers · Ionian Sea	1	6.2	0	—	new / 0
Debris · North Sea	1	6.2	0	—	new / 0
Icebergs · South Pacific Ocean	1	6.1	0	—	5.0× / 0.2
Exercises · Malacca Strait	1	4.5	1	4	2.5× / 0.4
Cable ops · Eastern China Sea	1	3.7	1	97	2.5× / 0.4
Cable ops · Gulf of Guinea	1	3.2	1	3	5.0× / 0.2
Quakes · Bering Sea	1	3	0	—	5.0× / 0.2
Quakes · Eastern China Sea	1	3	0	—	5.0× / 0.2
Quakes · Gulf of Tomini	1	3	0	—	2.5× / 0.4
Quakes · Indian Ocean	1	3	0	—	0.5× / 2.2
Quakes · Molukka Sea	1	3	0	—	0.6× / 1.8
Quakes · North Atlantic Ocean	1	3	0	—	0.6× / 1.8
Quakes · South China Sea	1	3	0	—	1.7× / 0.6
Nav aids · Rio de La Plata	1	2.9	1	2	new / 0
Other · Mediterranean Sea - Eastern Basin	1	2.6	0	—	2.5× / 0.4
Other · Tyrrhenian Sea	1	2.3	1	2	2.5× / 0.4
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	2	1	2	new / 0
Containers · Persian Gulf	1	1.7	1	1	5.0× / 0.2
Exercises · Indian Ocean	1	1.5	1	1	1.7× / 0.6
Other · North Atlantic Ocean	1	1.5	0	—	0.5× / 2.2
Incidents · Gulf of Oman	1	1.1	0	—	new / 0
Other · South Pacific Ocean	1	0.8	0	—	5.0× / 0.2
Wrecks · Gulf of Mexico	1	0.6	0	—	new / 0
Incidents · Bay of Biscay	1	0.4	0	—	1.3× / 0.8
Exercises · Red Sea	1	0.4	1	0	new / 0
Derelicts · English Channel	1	0.3	0	—	new / 0
Incidents · Great Australian Bight	1	0.2	0	—	5.0× / 0.2
Incidents · Arabian Sea	1	0.1	0	—	0.8× / 1.2
Nav aids · Gulf of Suez	0	153.2	3	265	— / 0
Nav aids · Celtic Sea	0	124	4	264	0.0× / 4.4
Surveys · Baffin Bay	0	93	3	90	— / 0
Nav aids · Great Australian Bight	0	63.4	2	85	0.0× / 1.2
Wrecks · Baltic Sealong running	0	62	2	1,097	0.0× / 0.8
Cable ops · Mediterranean Sea - Eastern Basin	0	62	2	128	— / 0
Surveys · North Sealong running	0	62	2	369	0.0× / 1
War risk · Persian Gulflong running	0	62	2	698	— / 0
Nav aids · Red Sealong running	0	62	2	386	0.0× / 0.2
Nav aids · Tyrrhenian Sea	0	62	2	76	0.0× / 2.8
Surveys · Indian Ocean	0	36.1	1	91	— / 0
Wrecks · Arabian Sealong running	0	31	1	385	0.0× / 0.2
Surveys · Balearic (Iberian Sea)	0	31	1	160	— / 0
Surveys · Bass Strait	0	31	1	37	— / 0
Other · Black Sea	0	31	1	294	— / 0
Other · Coral Sea	0	31	1	85	0.0× / 0.2
Wrecks · English Channellong running	0	31	1	804	0.0× / 0.6
Other · Greenland Sealong running	0	31	1	1,225	— / 0
Surveys · Greenland Sea	0	31	1	308	— / 0
Surveys · Gulf of Suez	0	31	1	76	— / 0
Cable ops · Indian Ocean	0	31	1	49	0.0× / 0.2
Nav aids · Indian Ocean	0	31	1	49	0.0× / 0.4
Restricted · Indian Ocean	0	31	1	204	— / 0
Nav aids · Japan Sea	0	31	1	75	0.0× / 0.2
Surveys · Japan Sea	0	31	1	78	0.0× / 0.2
Wrecks · Japan Sea	0	31	1	336	— / 0
Wrecks · Java Sea	0	31	1	237	— / 0
Wrecks · Kattegatlong running	0	31	1	1,045	— / 0
Other · Laccadive Sealong running	0	31	1	401	— / 0
Nav aids · Malacca Strait	0	31	1	331	0.0× / 0.4
Wrecks · North Atlantic Oceanlong running	0	31	1	391	0.0× / 0.2
Surveys · Persian Gulf	0	31	1	205	— / 0
Nav aids · Savu Sealong running	0	31	1	666	— / 0
Other · Sea of Marmara	0	31	1	63	— / 0
Ordnance · Sea of Okhotsk	0	31	1	84	— / 0
Other · Sea of Okhotsk	0	31	1	293	— / 0
Wrecks · Skagerraklong running	0	31	1	1,148	— / 0
Structures · South Atlantic Ocean	0	31	1	47	— / 0
Nav aids · South China Sea	0	31	1	196	0.0× / 0.2
Nav aids · Southern Ocean	0	31	1	96	— / 0
Wrecks · Sulu Sea	0	31	1	173	— / 0
Towing · Black Sea	0	30	0	—	— / 0
Surveys · Sea of Okhotsk	0	26.5	0	—	— / 0
Other · South China Sea	0	21	0	—	0.0× / 0.4
Derelicts · Indian Ocean	0	19.5	0	—	0.0× / 0.4
Other · South Atlantic Ocean	0	19	0	—	0.0× / 1.6
Exercises · Tyrrhenian Sea	0	18.8	0	—	0.0× / 1
Nav aids · Andaman or Burma Sea	0	18.5	0	—	0.0× / 0.6
Nav aids · Gulf of Aqaba	0	17.3	0	—	— / 0
Surveys · Tyrrhenian Sea	0	14.9	0	—	0.0× / 0.2
Incidents · Ligurian Sea	0	12.5	0	—	— / 0
Wrecks · Mediterranean Sea - Eastern Basin	0	11.5	0	—	— / 0
Surveys · Irish Sea and St. George's Channel	0	9.8	0	—	— / 0
Other · Gulf of Mexico	0	6	0	—	— / 0
Exercises · Mediterranean Sea - Western Basin	0	4.8	0	—	0.0× / 1.8
Wrecks · Coral Sea	0	3.1	0	—	— / 0
Other · Bass Strait	0	1.8	0	—	0.0× / 0.2
Quakes · Savu Sea	0	1.8	0	—	— / 0
Nav aids · Arafura Sea	0	1.4	0	—	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2003-12, 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.