Sea Ledger, August 2003

2003-08-01 to 2003-08-31 · archive

issued: 342
warning-days in force: 5,188
in force at month end: 172
sea × type cells: 191

baseline: same month, previous 5 years (2002-08, 2001-08, 2000-08, 1999-08, 1998-08)

By type

type	issued	warning-days	in force at end
Exercises	76	571	19
Incidents	59	731.3	25
Nav aids	41	1,312.1	42
Quakes	39	112	5
Cable ops	31	386.4	12
Other	22	515	16
Spills	14	179	9
Surveys	11	411.3	16
Derelicts	10	97.9	3
Debris	10	30.4	1
Ordnance	9	70.4	1
Icebergs	6	41.5	1
Missiles	5	62	2
Wrecks	5	463.6	15
Containers	2	9.4	0
Mines	1	0.4	0
Volcanic	1	0.9	0
War risk	0	62	2
Restricted	0	69.3	1
Towing	0	31	1
Structures	0	31	1

By sea and type · 191 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Exercises · North Atlantic Oceansurge	22	74.6	3	37	3.8× / 5.8
Incidents · North Pacific Oceansurge	18	223.1	11	77	2.0× / 9
Exercises · Black Seasurge	16	101.7	5	25	4.2× / 3.8
Cable ops · South Atlantic Ocean	16	70.5	2	109	0.6× / 26.4
Exercises · Laccadive Seasurge	12	70.5	3	37	10× / 1.2
Quakes · South Pacific Ocean	9	27	0	—	0.9× / 9.6
Nav aids · North Seasurge	9	24.6	1	23	2.1× / 4.2
Incidents · Coral Sea	9	2.3	0	—	2.0× / 4.6
Nav aids · South Atlantic Ocean	7	91.3	5	192	1.5× / 4.8
Spills · Gulf of Mexicosurge	7	91	4	41	7.0× / 1
Incidents · Indian Ocean	7	68.4	4	67	1.9× / 3.6
Nav aids · North Atlantic Ocean	7	63.9	1	144	1.8× / 4
Incidents · South Pacific Ocean	6	119.5	4	74	1.6× / 3.8
Exercises · North Pacific Ocean	6	69.9	0	—	1.1× / 5.6
Quakes · North Pacific Ocean	6	14.2	2	20	0.9× / 7
Incidents · Philippine Seasurge	5	78	2	75	2.1× / 2.4
Missiles · North Pacific Ocean	5	62	2	34	1.1× / 4.6
Icebergs · South Atlantic Ocean	5	34.9	1	36	1.8× / 2.8
Nav aids · Inner Seas off the West Coast of Scotlandsurge	5	33.1	1	70	2.8× / 1.8
Spills · Gulf of Alaskasurge	4	44	3	25	20× / 0.2
Incidents · North Atlantic Ocean	4	35.1	2	71	1.0× / 4
Other · Labrador Seasurge	4	24.3	0	—	2.0× / 2
Exercises · Bay of Bengalsurge	4	12.8	0	—	5.0× / 0.8
Quakes · Tasman Seanew	4	12	0	—	new / 0
Exercises · South Pacific Oceansurge	4	11.6	0	—	6.7× / 0.6
Debris · North Pacific Oceannew	4	3.7	1	4	new / 0
Wrecks · North Seasurge	3	84	3	233	15× / 0.2
Cable ops · North Atlantic Ocean	3	60.7	2	32	0.5× / 5.6
Quakes · Coral Sea	3	8	1	11	1.4× / 2.2
Surveys · South Atlantic Oceansurge	3	5.6	1	10	2.1× / 1.4
Nav aids · South Pacific Ocean	2	102.9	4	281	0.9× / 2.2
Other · Japan Sea	2	69.1	2	35	1.7× / 1.2
Nav aids · Coral Sea	2	63.4	1	161	1.1× / 1.8
Incidents · Adriatic Sea	2	56.9	2	57	10× / 0.2
Surveys · Gulf of Guineanew	2	54.3	2	94	new / 0
Incidents · Arabian Sea	2	39.5	0	—	2.5× / 0.8
Derelicts · North Atlantic Ocean	2	37.8	2	332	1.7× / 1.2
Nav aids · Andaman or Burma Seanew	2	27.5	1	47	new / 0
Spills · North Atlantic Ocean	2	24	2	38	1.7× / 1.2
Cable ops · Gulf of Guinea	2	19.8	1	27	5.0× / 0.4
Surveys · North Atlantic Ocean	2	18.8	0	—	0.8× / 2.6
Exercises · Japan Sea	2	14.6	0	—	3.3× / 0.6
Ordnance · Mediterranean Sea - Western Basinnew	2	14	0	—	new / 0
Other · North Atlantic Ocean	2	12.6	0	—	1.1× / 1.8
Debris · North Atlantic Ocean	2	12.3	0	—	3.3× / 0.6
Other · North Sea	2	9.1	1	26	0.8× / 2.6
Debris · North Seanew	2	7.7	0	—	new / 0
Ordnance · North Atlantic Ocean	2	7.6	0	—	1.0× / 2
Wrecks · Persian Gulfnew	2	7.6	1	7	new / 0
Exercises · Philippine Sea	2	7.6	0	—	10× / 0.2
Quakes · Southern Ocean	2	6.8	0	—	5.0× / 0.4
Ordnance · Sea of Azovnew	2	6.7	0	—	new / 0
Quakes · Halmahera Seanew	2	6	0	—	new / 0
Quakes · Ionian Seanew	2	6	0	—	new / 0
Quakes · North Atlantic Oceannew	2	6	0	—	new / 0
Quakes · South Atlantic Ocean	2	5.6	1	30	1.4× / 1.4
Cable ops · South Pacific Ocean	2	4.4	0	—	10× / 0.2
Derelicts · Mediterranean Sea - Eastern Basin	2	3.2	1	18	2.0× / 1
Exercises · Bering Seanew	2	2.5	0	—	new / 0
Ordnance · North Pacific Oceannew	2	2	0	—	new / 0
Derelicts · Coral Sea	2	1.4	0	—	3.3× / 0.6
Other · Bay of Bengalnew	2	1.2	0	—	new / 0
Incidents · Southern Ocean	2	0.9	0	—	10× / 0.2
Nav aids · Gulf of Suez	1	134.1	4	143	1.3× / 0.8
Exercises · Aegean Sea	1	67.5	2	243	0.7× / 1.4
Other · Black Sea	1	51.6	2	172	new / 0
Nav aids · Mozambique Channel	1	40.2	2	65	2.5× / 0.4
Nav aids · Mediterranean Sea - Eastern Basin	1	35.7	1	45	2.5× / 0.4
Other · Sea of Marmara	1	35.7	2	50	5.0× / 0.2
Exercises · Malacca Strait	1	34.3	1	34	2.5× / 0.4
Other · Yellow Sea	1	34.1	1	34	0.7× / 1.4
Exercises · Mediterranean Sea - Eastern Basin	1	30.5	1	31	0.5× / 2.2
Cable ops · Yellow Sea	1	26.5	1	26	2.5× / 0.4
Surveys · Black Sea	1	24.4	1	24	new / 0
Other · South China Sea	1	22.6	1	22	2.5× / 0.4
Spills · North Pacific Ocean	1	14	0	—	1.3× / 0.8
Nav aids · Tyrrhenian Sea	1	12.2	0	—	0.4× / 2.4
Cable ops · Eastern China Sea	1	11.6	0	—	0.4× / 2.6
Other · North Pacific Ocean	1	11.2	0	—	1.3× / 0.8
Nav aids · Ionian Sea	1	10.7	0	—	5.0× / 0.2
Cable ops · Adriatic Sea	1	10.5	1	10	5.0× / 0.2
Other · Celtic Sea	1	9.9	0	—	1.3× / 0.8
Surveys · Sea of Okhotsk	1	9.6	1	9	5.0× / 0.2
Cable ops · Irish Sea and St. George's Channel	1	8.6	0	—	5.0× / 0.2
Incidents · Bay of Bengal	1	7.1	0	—	2.5× / 0.4
Cable ops · Mediterranean Sea - Eastern Basin	1	6.7	1	6	1.3× / 0.8
Incidents · Yellow Sea	1	6.7	0	—	new / 0
Icebergs · Barentsz Sea	1	6.6	0	—	new / 0
Containers · Celtic Sea	1	6.5	0	—	new / 0
Derelicts · Bay of Bengal	1	6.4	0	—	5.0× / 0.2
Other · South Atlantic Ocean	1	6.4	0	—	2.5× / 0.4
Other · English Channel	1	6.3	0	—	new / 0
Derelicts · South Atlantic Ocean	1	6.3	0	—	0.5× / 2.2
Debris · Mediterranean Sea - Eastern Basin	1	5.1	0	—	new / 0
Exercises · Arabian Sea	1	5	0	—	1.3× / 0.8
Derelicts · English Channel	1	4.6	0	—	2.5× / 0.4
Exercises · Andaman or Burma Sea	1	4.4	1	4	5.0× / 0.2
Ordnance · Black Sea	1	4.1	0	—	new / 0
Cable ops · Mediterranean Sea - Western Basin	1	4.1	0	—	new / 0
Surveys · Bay of Biscay	1	3.5	1	3	5.0× / 0.2
Cable ops · Sulu Sea	1	3.4	1	3	new / 0
Quakes · Andaman or Burma Sea	1	3	0	—	1.7× / 0.6
Quakes · Arabian Sea	1	3	0	—	1.7× / 0.6
Quakes · Banda Sea	1	3	0	—	0.4× / 2.4
Quakes · Gulf of Alaska	1	3	0	—	5.0× / 0.2
Other · Irish Sea and St. George's Channel	1	3	0	—	new / 0
Quakes · Molukka Sea	1	3	0	—	1.0× / 1
Quakes · South China Sea	1	3	0	—	2.5× / 0.4
Debris · Gulf of Mexico	1	1.6	0	—	new / 0
Incidents · Mediterranean Sea - Eastern Basin	1	1.6	0	—	1.0× / 1
Exercises · Sea of Okhotsk	1	1.5	1	1	2.5× / 0.4
Derelicts · Bay of Biscay	1	1.1	0	—	5.0× / 0.2
Surveys · Mediterranean Sea - Western Basin	1	1.1	1	113	1.3× / 0.8
Nav aids · Bass Strait	1	1	0	—	5.0× / 0.2
Cable ops · Indian Ocean	1	1	1	1	new / 0
Other · Coral Sea	1	0.9	0	—	new / 0
Containers · English Channel	1	0.9	0	—	2.5× / 0.4
Volcanic · North Pacific Ocean	1	0.9	0	—	new / 0
Mines · Black Sea	1	0.4	0	—	new / 0
Incidents · Gulf of Oman	1	0.3	0	—	new / 0
Nav aids · Great Australian Bight	1	0.2	0	—	2.5× / 0.4
Quakes · Japan Sea	1	0	1	0	5.0× / 0.2
Nav aids · Solomon Sealong running	0	155	5	553	0.0× / 0.2
Nav aids · Celtic Sea	0	93	3	142	0.0× / 2.6
Surveys · Greenland Sea	0	93	3	186	— / 0
Nav aids · Arabian Sea	0	62	2	100	0.0× / 1
Wrecks · Baltic Sealong running	0	62	2	975	— / 0
Surveys · North Sea	0	62	2	247	0.0× / 5
Nav aids · Persian Gulflong running	0	62	2	635	0.0× / 1.4
War risk · Persian Gulflong running	0	62	2	576	— / 0
Nav aids · Red Sea	0	62	2	264	0.0× / 0.4
Cable ops · Bay of Bengal	0	56	0	—	0.0× / 0.6
Incidents · South China Sea	0	39.4	0	—	0.0× / 2.2
Surveys · Mediterranean Sea - Eastern Basin	0	33	1	37	0.0× / 1.2
Wrecks · Arabian Sea	0	31	1	263	— / 0
Surveys · Balearic (Iberian Sea)	0	31	1	38	— / 0
Surveys · Baltic Sea	0	31	1	64	— / 0
Other · Bass Straitlong running	0	31	1	513	— / 0
Nav aids · Bay of Bengal	0	31	1	121	— / 0
Wrecks · Bay of Bengal	0	31	1	80	0.0× / 0.2
Nav aids · English Channel	0	31	1	237	0.0× / 3
Wrecks · English Channellong running	0	31	1	682	— / 0
Other · Greenland Sealong running	0	31	1	1,103	0.0× / 0.2
Exercises · Indian Ocean	0	31	1	65	— / 0
Other · Indian Ocean	0	31	1	47	— / 0
Restricted · Indian Ocean	0	31	1	82	— / 0
Wrecks · Japan Sea	0	31	1	214	— / 0
Wrecks · Java Sea	0	31	1	115	— / 0
Wrecks · Kattegatlong running	0	31	1	923	— / 0
Nav aids · Laccadive Sea	0	31	1	121	— / 0
Other · Laccadive Sea	0	31	1	279	— / 0
Ordnance · Ligurian Sealong running	0	31	1	560	— / 0
Nav aids · Malacca Strait	0	31	1	209	— / 0
Other · Malacca Strait	0	31	1	339	— / 0
Wrecks · North Atlantic Ocean	0	31	1	269	— / 0
Structures · North Sea	0	31	1	58	— / 0
Cable ops · Persian Gulf	0	31	1	76	0.0× / 1.4
Other · Persian Gulf	0	31	1	208	0.0× / 0.2
Surveys · Persian Gulf	0	31	1	83	0.0× / 0.2
Nav aids · Savu Sealong running	0	31	1	544	— / 0
Cable ops · Sea of Okhotsk	0	31	1	33	0.0× / 0.2
Other · Sea of Okhotsk	0	31	1	171	— / 0
Towing · Sea of Okhotsk	0	31	1	61	— / 0
Wrecks · Skagerraklong running	0	31	1	1,026	— / 0
Nav aids · South China Sea	0	31	1	74	— / 0
Nav aids · Southern Ocean	0	31	1	225	— / 0
Wrecks · Sulu Sea	0	31	1	51	— / 0
Exercises · Tyrrhenian Sea	0	31	1	33	0.0× / 0.6
Wrecks · Southern Ocean	0	29.5	0	—	— / 0
Incidents · North Sea	0	27	0	—	0.0× / 0.2
Restricted · North Sea	0	25.5	0	—	— / 0
Derelicts · South Pacific Ocean	0	25.5	0	—	0.0× / 1.2
Cable ops · South China Sea	0	20.5	0	—	0.0× / 2.4
Nav aids · Irish Sea and St. George's Channel	0	16.9	0	—	0.0× / 2
Incidents · Mediterranean Sea - Western Basin	0	15.5	0	—	— / 0
Surveys · English Channel	0	13	0	—	0.0× / 3.6
Restricted · North Atlantic Ocean	0	12.8	0	—	— / 0
Cable ops · Black Sea	0	10.6	0	—	0.0× / 1.2
Derelicts · Indian Ocean	0	10.6	0	—	0.0× / 1.2
Cable ops · Strait of Gibraltar	0	8.5	0	—	— / 0
Spills · The Coastal Waters of Southeast Alaska and British Columbia	0	6	0	—	0.0× / 0.2
Incidents · Laccadive Sea	0	5.7	0	—	0.0× / 0.2
Ordnance · Persian Gulf	0	5	0	—	0.0× / 0.8
Nav aids · Alboran Sea	0	3.4	0	—	0.0× / 0.4
Incidents · South Atlantic Ocean	0	2.8	0	—	0.0× / 5.4
Quakes · Philippine Sea	0	2.4	0	—	0.0× / 2.2
Containers · Bay of Bengal	0	2	0	—	— / 0
Incidents · Celtic Sea	0	1.5	0	—	0.0× / 0.2
Wrecks · South China Sea	0	1.5	0	—	— / 0
Cable ops · Gulf of Suez	0	1	0	—	— / 0
Derelicts · North Pacific Ocean	0	1	0	—	0.0× / 0.8

Cite: seahazards.com Sea Ledger, 2003-08, 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.