Sea Ledger, July 2002

2002-07-01 to 2002-07-31 · archive

issued: 365
warning-days in force: 5,977
in force at month end: 215
sea × type cells: 179

baseline: same month, previous 5 years (2001-07, 2000-07, 1999-07, 1998-07, 1997-07)

By type

type	issued	warning-days	in force at end
Cable ops	82	744.9	23
Incidents	65	1,325.8	47
Nav aids	47	1,220.8	49
Exercises	40	358.8	10
Derelicts	21	110.2	6
Quakes	21	61.3	5
Other	20	528.1	16
Surveys	20	426.1	14
Icebergs	14	68.9	8
Debris	14	45.3	2
Ordnance	8	145.2	3
Wrecks	6	725.4	25
Missiles	5	62	2
Containers	2	11.5	1
War risk	0	62	2
Structures	0	18.4	0
Volcanic	0	62	2

By sea and type · 179 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · Celtic Seasurge	26	76.7	3	31	8.1× / 3.2
Cable ops · South Atlantic Ocean	23	104.2	4	39	0.9× / 24.4
Incidents · North Pacific Oceansurge	14	289.5	11	71	2.7× / 5.2
Nav aids · South Atlantic Oceansurge	11	99.5	6	100	3.1× / 3.6
Debris · North Atlantic Oceansurge	11	32.6	1	31	9.2× / 1.2
Incidents · South Atlantic Ocean	8	89.3	3	33	1.9× / 4.2
Cable ops · North Atlantic Ocean	8	86.5	2	28	0.9× / 8.8
Icebergs · Labrador Seasurge	8	37.6	6	8	6.7× / 1.2
Incidents · North Atlantic Oceansurge	8	27	1	33	2.4× / 3.4
Incidents · Philippine Sea	7	169.8	9	63	1.5× / 4.8
Incidents · South Pacific Oceansurge	7	164.9	4	67	2.1× / 3.4
Other · North Atlantic Ocean	7	7.3	0	—	1.9× / 3.6
Exercises · Laccadive Seanew	6	48.1	2	33	new / 0
Surveys · Celtic Sea	6	42.8	2	28	1.0× / 6
Exercises · Arabian Seanew	6	34.9	0	—	new / 0
Exercises · North Pacific Ocean	6	34	1	34	1.1× / 5.6
Derelicts · Mediterranean Sea - Eastern Basinsurge	6	32.8	3	16	15× / 0.4
Incidents · South China Seasurge	5	117.9	6	67	3.6× / 1.4
Missiles · North Pacific Ocean	5	62	2	35	1.6× / 3.2
Exercises · North Atlantic Ocean	5	38.6	1	41	0.9× / 5.4
Nav aids · Inner Seas off the West Coast of Scotland	5	25.8	0	—	1.9× / 2.6
Nav aids · North Sealong running	4	63.5	3	647	0.9× / 4.2
Incidents · Coral Sea	4	30.6	1	26	1.3× / 3
Cable ops · North Sea	4	23.4	2	15	0.8× / 5
Quakes · South Pacific Ocean	4	14.9	0	—	0.4× / 9.6
Exercises · Ionian Seasurge	4	13	0	—	2.9× / 1.4
Derelicts · North Atlantic Oceansurge	4	11.9	1	10	4.0× / 1
Quakes · North Pacific Ocean	4	10	1	22	0.9× / 4.4
Incidents · Indian Ocean	3	95.5	3	73	1.3× / 2.4
Nav aids · North Atlantic Oceanlong running	3	95.4	3	704	0.8× / 3.6
Incidents · Arabian Seasurge	3	72.1	2	42	5.0× / 0.6
Nav aids · South Pacific Oceansurge	3	65.1	3	246	3.0× / 1
Cable ops · Eastern China Seasurge	3	56.4	3	63	2.5× / 1.2
Nav aids · Celtic Sealong running	3	50.4	3	477	1.4× / 2.2
Nav aids · Tasman Seasurge	3	43.3	2	135	5.0× / 0.6
Surveys · Mediterranean Sea - Eastern Basinsurge	3	36.5	0	—	3.8× / 0.8
Exercises · Black Seasurge	3	28	0	—	7.5× / 0.4
Cable ops · Persian Gulfsurge	3	18.7	1	49	5.0× / 0.6
Icebergs · Indian Oceansurge	3	14.3	0	—	15× / 0.2
Exercises · Bay of Bengalsurge	3	11.5	1	19	5.0× / 0.6
Ordnance · North Atlantic Ocean	3	11.5	0	—	1.1× / 2.6
Quakes · Philippine Sea	3	8.7	1	20	0.6× / 4.8
Nav aids · Persian Gulf	2	114.5	5	239	3.3× / 0.6
Nav aids · Coral Sealong running	2	93.4	3	832	1.1× / 1.8
Nav aids · Tyrrhenian Sealong running	2	91	3	463	1.4× / 1.4
Other · Mediterranean Sea - Eastern Basin	2	72.5	2	82	5.0× / 0.4
Surveys · English Channel	2	70	2	47	0.6× / 3.4
Other · Japan Sea	2	68.2	2	34	5.0× / 0.4
Other · Yellow Sea	2	66.8	2	34	10× / 0.2
Cable ops · Aegean Seanew	2	66.2	0	—	new / 0
Incidents · Mediterranean Sea - Eastern Basin	2	61.6	1	69	3.3× / 0.6
Cable ops · Mediterranean Sea - Eastern Basin	2	44.6	2	33	5.0× / 0.4
Exercises · Mediterranean Sea - Eastern Basin	2	36.8	2	34	1.7× / 1.2
Wrecks · Mediterranean Sea - Eastern Basinnew	2	33.9	2	17	new / 0
Nav aids · Irish Sea and St. George's Channellong running	2	33.2	2	819	5.0× / 0.4
Nav aids · Mediterranean Sea - Eastern Basinnew	2	24.3	2	23	new / 0
Icebergs · South Atlantic Ocean	2	11.7	1	25	3.3× / 0.6
Derelicts · Arabian Sea	2	8.1	0	—	10× / 0.2
Derelicts · South Atlantic Ocean	2	7.9	0	—	5.0× / 0.4
Quakes · Bismarck Sea	2	6	0	—	2.5× / 0.8
Quakes · Indian Ocean	2	6	0	—	1.1× / 1.8
Ordnance · Greenland Sea	2	5.3	0	—	5.0× / 0.4
Surveys · Ionian Sea	2	4.5	0	—	10× / 0.2
Quakes · South Atlantic Ocean	2	4.4	2	2	2.0× / 1
Cable ops · Tyrrhenian Sea	2	4	0	—	3.3× / 0.6
Nav aids · Bass Strait	2	2.7	0	—	5.0× / 0.4
Wrecks · North Sealong running	1	99.8	3	405	5.0× / 0.2
Other · North Sealong running	1	92.9	3	849	0.6× / 1.6
Cable ops · South China Sea	1	87.7	2	102	0.6× / 1.6
Cable ops · Black Sea	1	78.9	1	94	new / 0
Surveys · North Atlantic Ocean	1	66.6	3	68	0.7× / 1.4
Wrecks · Coral Sealong running	1	64.9	3	541	new / 0
Other · Bass Strait	1	36.8	1	117	new / 0
Exercises · Malacca Strait	1	35.3	1	34	new / 0
Ordnance · North Pacific Ocean	1	32.1	1	293	5.0× / 0.2
Surveys · South Pacific Ocean	1	31	1	102	2.5× / 0.4
Surveys · Sea of Okhotsk	1	30.5	1	30	2.5× / 0.4
Wrecks · North Pacific Ocean	1	28.2	1	28	new / 0
Cable ops · Bass Strait	1	26.4	1	31	new / 0
Other · South Atlantic Ocean	1	24.5	1	24	new / 0
Other · Arabian Sea	1	19.4	1	19	new / 0
Incidents · Gulf of Guinea	1	16.2	1	16	2.5× / 0.4
Ordnance · Persian Gulf	1	15.5	0	—	5.0× / 0.2
Surveys · Gulf of Oman	1	13.7	1	13	new / 0
Cable ops · Mediterranean Sea - Western Basin	1	13.1	0	—	1.7× / 0.6
Cable ops · Tasman Sea	1	12	0	—	1.0× / 1
Other · Mediterranean Sea - Western Basin	1	10.1	0	—	new / 0
Derelicts · South Pacific Ocean	1	10.1	0	—	1.7× / 0.6
Derelicts · Timor Sea	1	8.7	0	—	new / 0
Cable ops · Arabian Sea	1	8.3	0	—	5.0× / 0.2
Exercises · Sea of Okhotsk	1	7.7	0	—	new / 0
Cable ops · Bay of Bengal	1	7.4	1	168	2.5× / 0.4
Derelicts · Ionian Sea	1	6.8	0	—	2.5× / 0.4
Derelicts · Mediterranean Sea - Western Basin	1	6.5	1	6	new / 0
Debris · Ionian Sea	1	6.3	0	—	new / 0
Derelicts · North Pacific Ocean	1	6.3	0	—	1.3× / 0.8
Surveys · Bass Strait	1	6.2	0	—	new / 0
Derelicts · Celtic Sea	1	6.2	0	—	1.7× / 0.6
Containers · Tasman Sea	1	6.2	0	—	2.5× / 0.4
Debris · English Channel	1	6	0	—	new / 0
Incidents · Gulf of Mexico	1	6	0	—	new / 0
Other · Sea of Marmara	1	5.5	1	5	new / 0
Exercises · Adriatic Sea	1	5.3	0	—	0.4× / 2.6
Containers · North Atlantic Ocean	1	5.3	1	5	5.0× / 0.2
Icebergs · Southern Ocean	1	5.3	1	5	0.6× / 1.8
Nav aids · Arabian Sea	1	4.8	1	38	2.5× / 0.4
Derelicts · South China Sea	1	3.9	1	3	5.0× / 0.2
Quakes · Celebes Sea	1	3	0	—	new / 0
Quakes · Sea of Okhotsk	1	3	0	—	5.0× / 0.2
Quakes · Solomon Sea	1	3	0	—	0.7× / 1.4
Cable ops · Irish Sea and St. George's Channel	1	2.9	0	—	1.3× / 0.8
Wrecks · South Pacific Ocean	1	2.6	0	—	5.0× / 0.2
Ordnance · Tyrrhenian Sea	1	1.9	0	—	2.5× / 0.4
Exercises · Bering Sea	1	1.8	0	—	new / 0
Exercises · Japan Sea	1	1.8	0	—	1.3× / 0.8
Cable ops · Sulu Sea	1	1.6	1	1	new / 0
Surveys · Persian Gulf	1	1.3	1	1	new / 0
Quakes · Banda Sea	1	1.2	1	1	1.3× / 0.8
Nav aids · English Channel	1	1	0	—	0.4× / 2.6
Nav aids · Indian Ocean	1	0.8	0	—	2.5× / 0.4
Surveys · Bay of Biscay	1	0.5	1	0	1.7× / 0.6
Other · Philippine Sea	1	0.5	0	—	new / 0
Incidents · Barentsz Sea	1	0.4	0	—	new / 0
Debris · Yellow Sea	1	0.4	1	0	new / 0
Incidents · Arafura Sea	1	0.2	0	—	new / 0
Wrecks · English Channellong running	0	124	4	1,127	0.0× / 0.2
Exercises · Aegean Sea	0	62	2	209	0.0× / 0.6
Wrecks · Baltic Sealong running	0	62	2	579	0.0× / 0.2
Wrecks · Irish Sea and St. George's Channellong running	0	62	2	758	0.0× / 0.4
War risk · Persian Gulf	0	62	2	180	— / 0
Volcanic · Philippine Sea	0	62	2	313	— / 0
Nav aids · Skagerraklong running	0	62	2	393	0.0× / 0.2
Wrecks · South China Sea	0	62	2	307	0.0× / 0.6
Wrecks · Tyrrhenian Sealong running	0	62	2	538	0.0× / 0.2
Incidents · Tyrrhenian Sea	0	49.4	1	59	— / 0
Nav aids · Adriatic Sealong running	0	31	1	425	— / 0
Incidents · Bismarck Sea	0	31	1	37	— / 0
Wrecks · Celtic Sea	0	31	1	257	— / 0
Nav aids · Eastern China Sealong running	0	31	1	646	— / 0
Surveys · Eastern China Sea	0	31	1	39	— / 0
Other · Greenland Sealong running	0	31	1	707	— / 0
Nav aids · Gulf of Suez	0	31	1	146	— / 0
Incidents · Gulf of Thailand	0	31	1	42	— / 0
Ordnance · Indian Ocean	0	31	1	181	0.0× / 0.2
Nav aids · Ionian Sea	0	31	1	50	0.0× / 0.2
Wrecks · Kattegatlong running	0	31	1	527	— / 0
Ordnance · Ligurian Sea	0	31	1	164	— / 0
Wrecks · Makassar Strait	0	31	1	50	0.0× / 0.2
Nav aids · Malacca Strait	0	31	1	96	0.0× / 0.2
Surveys · Mediterranean Sea - Western Basin	0	31	1	99	0.0× / 0.6
Other · North Pacific Ocean	0	31	1	42	0.0× / 0.4
Other · Persian Gulf	0	31	1	81	— / 0
Incidents · Persian Gulf	0	31	1	100	— / 0
Nav aids · Red Sea	0	31	1	135	— / 0
Nav aids · Savu Sea	0	31	1	148	— / 0
Nav aids · Singapore Strait	0	31	1	216	0.0× / 0.6
Wrecks · Skagerraklong running	0	31	1	630	— / 0
Nav aids · Solomon Sea	0	31	1	157	— / 0
Nav aids · South China Sealong running	0	31	1	408	— / 0
Incidents · Sulu Sea	0	31	1	44	0.0× / 0.2
Nav aids · Timor Sealong running	0	31	1	918	— / 0
Surveys · Indian Ocean	0	29	0	—	— / 0
Cable ops · Balearic (Iberian Sea)	0	23.5	0	—	— / 0
Other · South China Sea	0	20	0	—	0.0× / 0.4
Structures · South China Sea	0	18.4	0	—	0.0× / 0.2
Surveys · Gulf of Aqaba	0	17	0	—	— / 0
Incidents · Bay of Bengal	0	11.4	0	—	— / 0
Ordnance · North Sea	0	10.4	0	—	0.0× / 0.6
Other · Gulf of Suez	0	10	0	—	— / 0
Nav aids · Gulf of Mexico	0	9.1	0	—	— / 0
Surveys · North Pacific Ocean	0	7	0	—	0.0× / 0.2
Ordnance · Philippine Sea	0	6.5	0	—	0.0× / 0.2
Surveys · Gulf of Suez	0	6	0	—	— / 0
Cable ops · English Channel	0	2.4	0	—	0.0× / 0.8
Surveys · South Atlantic Ocean	0	1.5	0	—	0.0× / 0.8
Quakes · Coral Sea	0	1.1	0	—	0.0× / 2
Derelicts · Laccadive Sea	0	1	0	—	— / 0
Other · Irish Sea and St. George's Channel	0	0.6	0	—	0.0× / 0.4
Other · Black Sea	0	0	0	—	— / 0

Cite: seahazards.com Sea Ledger, 2002-07, 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.