Sea Ledger, May 2003

2003-05-01 to 2003-05-31 · archive

issued: 342
warning-days in force: 5,090
in force at month end: 165
sea × type cells: 169

baseline: same month, previous 5 years (2002-05, 2001-05, 2000-05, 1999-05, 1998-05)

By type

type	issued	warning-days	in force at end
Exercises	64	464.3	11
Incidents	47	682.5	24
Cable ops	44	416.8	17
Nav aids	43	1,315.2	40
Quakes	37	117.3	0
Surveys	21	471.2	16
Other	18	543.8	20
Derelicts	15	92.5	5
Icebergs	15	54.4	0
Spills	11	126	5
Missiles	9	70.7	2
Containers	7	33.7	2
Ordnance	4	71.6	2
Debris	3	7	2
Wrecks	1	535.1	16
Towing	1	6.4	0
Restricted	1	19.2	1
Mines	1	0.4	0
War risk	0	62	2

By sea and type · 169 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Ocean	28	103	4	35	1.1× / 26
Exercises · North Atlantic Ocean	11	46.8	2	36	1.4× / 7.6
Exercises · Laccadive Seasurge	10	47.9	1	36	5.0× / 2
Incidents · Coral Seasurge	10	3	0	—	2.9× / 3.4
Incidents · North Pacific Ocean	9	167.3	8	66	1.2× / 7.4
Missiles · North Pacific Ocean	9	70.7	2	37	2.0× / 4.6
Exercises · Arabian Seasurge	9	21.5	1	29	6.4× / 1.4
Nav aids · Celtic Seasurge	8	95.6	3	50	4.0× / 2
Icebergs · North Atlantic Oceansurge	8	8	0	—	2.7× / 3
Incidents · South China Seasurge	7	104.7	4	54	3.9× / 1.8
Quakes · South Pacific Ocean	7	21	0	—	1.1× / 6.4
Spills · Gulf of Mexicosurge	6	77	2	37	3.8× / 1.6
Nav aids · North Sea	6	46.5	1	110	1.1× / 5.6
Exercises · Bay of Bengalsurge	6	16.6	2	34	6.0× / 1
Exercises · Tyrrhenian Sea	5	64	1	32	1.7× / 3
Exercises · Adriatic Sea	5	30.8	0	—	1.9× / 2.6
Quakes · North Pacific Ocean	5	16.6	0	—	0.9× / 5.8
Incidents · Mediterranean Sea - Eastern Basinsurge	5	3.1	0	—	3.1× / 1.6
Surveys · North Atlantic Ocean	4	67.5	4	37	1.7× / 2.4
Derelicts · North Atlantic Oceansurge	4	49.4	3	240	3.3× / 1.2
Spills · North Atlantic Oceansurge	4	46	2	45	6.7× / 0.6
Cable ops · Mediterranean Sea - Eastern Basinsurge	4	37.5	3	51	6.7× / 0.6
Other · North Atlantic Ocean	4	35	1	89	0.8× / 4.8
Nav aids · Irish Sea and St. George's Channelsurge	4	25.9	0	—	6.7× / 0.6
Quakes · Indian Ocean	4	14.9	0	—	1.4× / 2.8
Derelicts · South Atlantic Oceansurge	4	3.9	1	28	2.5× / 1.6
Nav aids · South Pacific Oceansurge	3	131	3	240	2.5× / 1.2
Nav aids · South Atlantic Ocean	3	77.2	2	330	0.4× / 7
Icebergs · South Atlantic Oceansurge	3	19.9	0	—	3.8× / 0.8
Icebergs · Southern Ocean	3	19.9	0	—	1.3× / 2.4
Derelicts · Mediterranean Sea - Western Basinnew	3	11.2	0	—	new / 0
Quakes · Coral Seasurge	3	10.8	0	—	3.8× / 0.8
Incidents · South Atlantic Ocean	3	10.4	1	45	0.9× / 3.4
Exercises · North Pacific Ocean	3	9.4	0	—	0.3× / 11
Quakes · Mediterranean Sea - Western Basinnew	3	9	0	—	new / 0
Quakes · Molukka Seasurge	3	9	0	—	2.5× / 1.2
Other · Mediterranean Sea - Eastern Basinsurge	3	8.3	3	5	15× / 0.2
Other · North Pacific Oceansurge	3	6.5	0	—	5.0× / 0.6
Exercises · Indian Oceannew	3	5.9	1	10	new / 0
Surveys · Ionian Seasurge	3	5.9	0	—	3.8× / 0.8
Nav aids · Bristol Channelsurge	3	4.2	1	11	2.5× / 1.2
Incidents · South Pacific Ocean	3	1.3	0	—	0.7× / 4.6
Nav aids · Persian Gulflong running	2	117.1	4	543	1.4× / 1.4
Incidents · North Atlantic Ocean	2	95.1	2	47	0.5× / 3.8
Nav aids · Coral Sealong running	2	87.6	3	1,136	5.0× / 0.4
Incidents · Indian Ocean	2	77.8	2	54	0.6× / 3.4
Nav aids · North Atlantic Ocean	2	74.7	2	162	0.7× / 2.8
Other · Japan Sea	2	67.3	2	35	2.5× / 0.8
Incidents · Philippine Sea	2	55.8	2	64	0.8× / 2.6
Cable ops · Arabian Sea	2	47.4	2	136	2.0× / 1
Surveys · Arabian Seanew	2	41.7	1	92	new / 0
Surveys · North Sea	2	36.7	2	155	0.5× / 4.2
Exercises · Black Sea	2	23.5	0	—	1.1× / 1.8
Cable ops · Eastern China Sea	2	23.3	2	19	0.8× / 2.6
Derelicts · Bay of Bengalnew	2	20.7	1	14	new / 0
Surveys · South Atlantic Ocean	2	16.5	0	—	1.3× / 1.6
Exercises · Mediterranean Sea - Western Basin	2	15.7	1	39	0.7× / 3
Exercises · Red Sea	2	13.5	0	—	5.0× / 0.4
Containers · Tyrrhenian Seanew	2	8.8	1	16	new / 0
Ordnance · North Pacific Ocean	2	7.7	0	—	3.3× / 0.6
Derelicts · Mediterranean Sea - Eastern Basin	2	7.3	0	—	10× / 0.2
Quakes · Banda Sea	2	6	0	—	3.3× / 0.6
Quakes · Celebes Sea	2	6	0	—	3.3× / 0.6
Quakes · Philippine Sea	2	6	0	—	1.1× / 1.8
Containers · Indian Ocean	2	5.5	1	5	10× / 0.2
Exercises · Philippine Sea	2	2.6	0	—	5.0× / 0.4
Ordnance · Eastern China Seanew	2	1.9	0	—	new / 0
Nav aids · Gulf of Suez	1	98.6	4	58	2.5× / 0.4
Other · Black Sea	1	85.5	3	80	new / 0
Nav aids · Mediterranean Sea - Western Basin	1	81.9	3	219	0.7× / 1.4
Cable ops · North Atlantic Ocean	1	77.2	2	252	0.1× / 7.4
Nav aids · Red Sea	1	67.6	3	172	new / 0
Nav aids · Laccadive Sea	1	60.1	1	38	5.0× / 0.2
Exercises · Mediterranean Sea - Eastern Basin	1	54.2	0	—	0.8× / 1.2
Surveys · Mediterranean Sea - Western Basinlong running	1	52.7	2	403	0.7× / 1.4
Cable ops · Bay of Bengal	1	43.4	1	102	1.7× / 0.6
Nav aids · English Channel	1	32.7	1	145	0.3× / 3
Incidents · Tasman Sea	1	31.8	1	39	0.8× / 1.2
Nav aids · Bay of Bengal	1	29.6	1	29	new / 0
Wrecks · Java Sea	1	23.2	1	23	new / 0
Cable ops · Gulf of Suez	1	22.5	1	53	5.0× / 0.2
Surveys · Malacca Strait	1	22.4	1	22	new / 0
Restricted · North Atlantic Ocean	1	19.2	1	19	new / 0
Cable ops · Bass Strait	1	19	0	—	2.5× / 0.4
Incidents · Adriatic Sea	1	18.6	1	18	1.7× / 0.6
Nav aids · Tyrrhenian Sea	1	17.3	0	—	0.5× / 2.2
Surveys · Mediterranean Sea - Eastern Basin	1	16.6	0	—	0.6× / 1.8
Exercises · South Atlantic Ocean	1	16	0	—	0.5× / 2
Cable ops · Indian Ocean	1	14.5	0	—	1.3× / 0.8
Cable ops · English Channel	1	14.4	0	—	0.3× / 4
Other · North Sea	1	10.4	1	10	0.6× / 1.6
Nav aids · Arabian Sea	1	10	1	38	new / 0
Surveys · Philippine Sea	1	9.6	0	—	2.5× / 0.4
Icebergs · Barentsz Sea	1	6.6	0	—	new / 0
Containers · Mediterranean Sea - Eastern Basin	1	6.5	0	—	5.0× / 0.2
Cable ops · Mediterranean Sea - Western Basin	1	6.5	1	6	1.7× / 0.6
Containers · North Atlantic Ocean	1	6.5	0	—	1.3× / 0.8
Towing · Black Sea	1	6.4	0	—	new / 0
Containers · South Atlantic Ocean	1	6.4	0	—	new / 0
Other · Eastern China Sea	1	5.2	0	—	new / 0
Incidents · Andaman or Burma Sea	1	4.7	1	4	new / 0
Surveys · Celtic Sea	1	4.6	0	—	0.1× / 13
Debris · Mediterranean Sea - Western Basin	1	4.2	1	4	5.0× / 0.2
Quakes · Arabian Sea	1	3	0	—	new / 0
Quakes · Bismarck Sea	1	3	0	—	0.6× / 1.6
Quakes · Ceram Sea	1	3	0	—	5.0× / 0.2
Quakes · Makassar Strait	1	3	0	—	5.0× / 0.2
Quakes · Mediterranean Sea - Eastern Basin	1	3	0	—	1.7× / 0.6
Quakes · North Atlantic Ocean	1	3	0	—	1.3× / 0.8
Spills · The Coastal Waters of Southeast Alaska and British Columbia	1	3	1	3	new / 0
Surveys · Bass Strait	1	2.4	0	—	new / 0
Nav aids · Inner Seas off the West Coast of Scotland	1	2.4	0	—	0.4× / 2.4
Surveys · Gulf of Guinea	1	2.2	1	2	new / 0
Exercises · Gulf of Mexico	1	1.7	0	—	0.7× / 1.4
Other · Irish Sea and St. George's Channel	1	1.7	0	—	2.5× / 0.4
Debris · South Pacific Ocean	1	1.7	1	1	new / 0
Other · Arabian Sea	1	1.3	0	—	5.0× / 0.2
Debris · Bass Strait	1	1.1	0	—	new / 0
Surveys · Adriatic Sea	1	1	0	—	1.3× / 0.8
Exercises · Ionian Sea	1	1	0	—	0.8× / 1.2
Other · Mediterranean Sea - Western Basin	1	0.7	0	—	5.0× / 0.2
Mines · North Sea	1	0.4	0	—	5.0× / 0.2
Cable ops · South China Sea	1	0.4	1	0	0.6× / 1.6
Nav aids · Bass Strait	1	0.1	0	—	1.0× / 1
Incidents · Arafura Sea	1	0	0	—	2.5× / 0.4
Other · Persian Gulf	0	99.9	3	116	0.0× / 0.8
Surveys · Greenland Sea	0	93	3	94	— / 0
Wrecks · North Sealong running	0	93	3	709	0.0× / 0.4
Nav aids · Solomon Sealong running	0	93	3	461	0.0× / 0.2
Exercises · Aegean Sea	0	62	2	151	0.0× / 3.6
Wrecks · Baltic Sealong running	0	62	2	883	— / 0
Wrecks · North Atlantic Ocean	0	62	2	177	— / 0
War risk · Persian Gulflong running	0	62	2	484	— / 0
Surveys · English Channel	0	57.9	1	61	0.0× / 2.2
Wrecks · South China Sealong running	0	47.4	1	611	— / 0
Wrecks · Arabian Sea	0	31	1	171	0.0× / 0.4
Other · Bass Straitlong running	0	31	1	421	— / 0
Surveys · Black Sea	0	31	1	51	— / 0
Wrecks · English Channellong running	0	31	1	590	— / 0
Other · Greenland Sealong running	0	31	1	1,011	— / 0
Ordnance · Indian Oceanlong running	0	31	1	485	— / 0
Nav aids · Ionian Sea	0	31	1	140	— / 0
Wrecks · Japan Sea	0	31	1	122	— / 0
Wrecks · Kattegatlong running	0	31	1	831	— / 0
Other · Laccadive Sea	0	31	1	187	— / 0
Ordnance · Ligurian Sealong running	0	31	1	468	— / 0
Nav aids · Malacca Strait	0	31	1	117	— / 0
Other · Malacca Strait	0	31	1	247	0.0× / 0.2
Incidents · Mediterranean Sea - Western Basin	0	31	1	34	— / 0
Wrecks · Persian Gulf	0	31	1	64	— / 0
Nav aids · Savu Sealong running	0	31	1	452	— / 0
Other · Sea of Marmara	0	31	1	54	— / 0
Other · Sea of Okhotsk	0	31	1	79	— / 0
Wrecks · Skagerraklong running	0	31	1	934	— / 0
Incidents · Solomon Sea	0	31	1	39	0.0× / 0.2
Nav aids · Southern Ocean	0	31	1	133	— / 0
Wrecks · Southern Ocean	0	31	1	34	— / 0
Other · Tyrrhenian Sea	0	31	1	141	0.0× / 0.8
Exercises · Malacca Strait	0	30.7	0	—	0.0× / 0.2
Wrecks · Malacca Strait	0	30.5	0	—	— / 0
Incidents · Mozambique Channel	0	30.5	0	—	0.0× / 0.4
Nav aids · Bay of Biscay	0	21.7	0	—	— / 0
Incidents · Arabian Sea	0	16.4	0	—	0.0× / 0.6
Nav aids · Eastern China Sea	0	16.4	0	—	— / 0
Surveys · Persian Gulf	0	9.5	0	—	— / 0
Other · Celtic Sea	0	5	0	—	0.0× / 0.2
Cable ops · Gulf of Guinea	0	4	0	—	— / 0
Cable ops · Tyrrhenian Sea	0	3.7	0	—	— / 0
Exercises · Andaman or Burma Sea	0	0.5	0	—	0.0× / 0.2

Cite: seahazards.com Sea Ledger, 2003-05, 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.