Sea Ledger, January 2013

2013-01-01 to 2013-01-31 · archive

issued: 466
warning-days in force: 7,732
in force at month end: 263
sea × type cells: 210

baseline: same month, previous 5 years (2012-01, 2011-01, 2010-01, 2009-01, 2008-01)

By type

type	issued	warning-days	in force at end
Incidents	112	733.6	22
Cable ops	78	1,197.1	40
Exercises	75	690.1	21
Nav aids	56	2,162.4	69
Derelicts	37	166.3	6
Quakes	20	42.5	7
Surveys	20	963.9	38
Missiles	15	131.4	3
Icebergs	15	31.3	3
Wrecks	14	816.7	30
Other	9	274.3	10
Debris	5	15	0
Piracy	3	18.8	0
Spills	3	94	1
Containers	3	9	0
Ordnance	1	75.4	3
Restricted	0	186	6
War risk	0	62	2
Structures	0	31	1
Volcanic	0	31	1

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Cable ops · South Atlantic Ocean	52	268.9	7	96	1.9× / 26.8
Nav aids · North Sea	23	446.7	15	356	1.8× / 12.8
Incidents · North Pacific Ocean	22	53.1	2	36	1.4× / 16.2
Incidents · North Atlantic Ocean	16	95.3	4	49	1.4× / 11.4
Incidents · Indian Oceansurge	16	56.4	2	33	3.6× / 4.4
Incidents · South China Sea	15	189.1	3	47	1.9× / 7.8
Exercises · Bay of Bengal	10	87.1	4	38	1.4× / 7.4
Exercises · South Atlantic Ocean	10	57.3	0	—	1.9× / 5.4
Exercises · Mediterranean Sea - Eastern Basinsurge	10	54.1	2	34	13× / 0.8
Icebergs · South Atlantic Oceansurge	8	22.8	2	28	2.0× / 4
Surveys · South Atlantic Oceansurge	7	116.6	7	201	3.5× / 2
Exercises · Yellow Sea	7	48.8	2	34	1.5× / 4.6
Exercises · North Pacific Ocean	7	48.5	2	35	0.8× / 9
Derelicts · North Atlantic Oceansurge	7	21.7	0	—	12× / 0.6
Derelicts · Indian Oceansurge	7	21	0	—	2.9× / 2.4
Icebergs · Gulf of St. Lawrencenew	7	7.5	1	24	new / 0
Cable ops · North Atlantic Ocean	6	94.9	5	89	1.8× / 3.4
Exercises · Aegean Seasurgelong running	6	94.4	3	397	2.5× / 2.4
Exercises · Arabian Sea	6	62	1	35	1.2× / 5
Incidents · South Pacific Ocean	6	4.9	0	—	0.7× / 8.6
Nav aids · South Atlantic Oceanlong running	5	528.5	18	1,625	0.6× / 8.4
Incidents · Caribbean Seasurge	5	85.5	2	56	2.5× / 2
Incidents · South Atlantic Ocean	5	78.2	2	35	1.0× / 5.2
Derelicts · South Pacific Oceansurge	5	43.9	1	218	5.0× / 1
Incidents · Gulf of Mexicosurge	5	37.5	1	42	3.6× / 1.4
Exercises · South Pacific Oceansurge	5	25	0	—	2.3× / 2.2
Quakes · Coral Sea	5	4.3	5	1	1.6× / 3.2
Cable ops · Bay of Bengal	4	149.3	4	92	1.8× / 2.2
Quakes · South Pacific Ocean	4	10.2	1	23	0.3× / 11.6
Quakes · North Pacific Ocean	4	6.7	1	26	0.7× / 5.4
Nav aids · North Atlantic Ocean	3	131	5	124	0.8× / 3.8
Nav aids · North Pacific Oceanlong running	3	99.3	3	627	0.6× / 5
Nav aids · Celtic Sea	3	67.4	2	118	0.8× / 3.6
Spills · Gulf of Mexico	3	50	0	—	0.5× / 5.8
Nav aids · Inner Seas off the West Coast of Scotland	3	32.8	1	54	0.7× / 4.6
Incidents · Philippine Sea	3	12.8	0	—	0.7× / 4.4
Incidents · Bismarck Seasurge	3	11.7	0	—	2.5× / 1.2
Derelicts · South Atlantic Oceansurge	3	9	0	—	3.0× / 1
Derelicts · South China Seasurge	3	7.3	0	—	3.0× / 1
Surveys · Tasman Seasurge	3	6	0	—	3.8× / 0.8
Derelicts · Coral Seasurge	3	5.9	1	6	3.0× / 1
Nav aids · Coral Sea	3	3.8	0	—	1.9× / 1.6
Wrecks · Indian Oceannew	2	70.8	2	43	new / 0
Surveys · Mediterranean Sea - Eastern Basin	2	69.4	3	62	0.6× / 3.6
Exercises · South China Sea	2	68.8	2	34	2.5× / 0.8
Cable ops · South China Sea	2	64.5	4	63	3.3× / 0.6
Nav aids · Irish Sea and St. George's Channel	2	62	2	134	0.6× / 3.2
Cable ops · Gulf of Mexico	2	38.2	2	120	2.5× / 0.8
Missiles · North Pacific Ocean	2	35.5	1	62	0.4× / 5
Nav aids · Bristol Channel	2	34	2	358	2.5× / 0.8
Wrecks · English Channel	2	22.4	2	17	5.0× / 0.4
Cable ops · Mediterranean Sea - Eastern Basin	2	15.3	1	20	0.8× / 2.6
Missiles · Laccadive Sea	2	10	0	—	3.3× / 0.6
Missiles · Philippine Sea	2	9.2	0	—	5.0× / 0.4
Missiles · Bay of Bengal	2	7.7	0	—	2.0× / 1
Derelicts · Gulf of Mexico	2	6	0	—	10× / 0.2
Missiles · Arctic Oceannew	2	3.5	0	—	new / 0
Wrecks · Mozambique Channelnew	2	2.9	0	—	new / 0
Incidents · English Channelnew	2	2.3	1	2	new / 0
Derelicts · Arafura Sea	2	1.7	1	1	10× / 0.2
Cable ops · Mediterranean Sea - Western Basin	2	1.4	0	—	10× / 0.2
Surveys · Mediterranean Sea - Western Basinnew	2	0.7	2	0	new / 0
Incidents · Coral Sea	2	0.1	0	—	0.6× / 3.2
Nav aids · Arabian Sealong running	1	162.2	5	601	new / 0
Nav aids · Gulf of Mexicolong running	1	136.7	3	450	0.3× / 3
Cable ops · Persian Gulflong running	1	120.1	4	378	0.3× / 3.2
Wrecks · South Atlantic Oceanlong running	1	93.9	4	995	new / 0
Ordnance · North Sealong running	1	75.4	3	1,553	1.7× / 0.6
Cable ops · Black Sea	1	73.5	1	89	1.7× / 0.6
Other · North Atlantic Ocean	1	73.3	2	164	1.7× / 0.6
Surveys · Andaman or Burma Sea	1	41.9	1	33	new / 0
Other · Persian Gulflong running	1	34	1	508	5.0× / 0.2
Exercises · Laccadive Sea	1	33	1	31	0.3× / 3.6
Other · North Sea	1	32.2	2	141	0.8× / 1.2
Nav aids · South Pacific Ocean	1	32.1	1	210	1.0× / 1
Missiles · Aegean Sealong running	1	29.4	1	397	new / 0
Exercises · Ionian Sea	1	29.4	1	29	new / 0
Wrecks · Mediterranean Sea - Eastern Basin	1	29.2	1	29	5.0× / 0.2
Other · South Atlantic Ocean	1	28.6	1	28	0.8× / 1.2
Surveys · Arabian Sea	1	28.5	1	28	1.7× / 0.6
Exercises · Persian Gulf	1	27	1	27	2.5× / 0.4
Missiles · Indian Ocean	1	23.7	1	23	new / 0
Cable ops · Tasman Sea	1	23.4	1	23	0.6× / 1.8
Exercises · Philippine Sea	1	22.3	0	—	0.8× / 1.2
Cable ops · Philippine Sea	1	20	1	20	5.0× / 0.2
Surveys · Laccadive Sea	1	18.5	0	—	new / 0
Exercises · Red Sea	1	18.1	0	—	2.5× / 0.4
Incidents · Gulf of Guinea	1	17.8	1	17	new / 0
Incidents · Singapore Strait	1	17.3	0	—	new / 0
Surveys · North Atlantic Ocean	1	16.9	1	142	1.0× / 1
Cable ops · Yellow Sea	1	15.5	0	—	2.5× / 0.4
Wrecks · Baltic Sea	1	13.5	1	13	new / 0
Surveys · Sulu Sea	1	13	1	13	new / 0
Wrecks · North Pacific Ocean	1	10.1	1	10	new / 0
Cable ops · Sulu Sea	1	9.8	1	9	new / 0
Wrecks · Andaman or Burma Sea	1	9.5	1	9	new / 0
Derelicts · Bay of Bengal	1	8.8	1	8	new / 0
Wrecks · Red Sea	1	8.5	1	8	new / 0
Other · Coral Sea	1	8.3	1	8	1.3× / 0.8
Incidents · Laccadive Sea	1	8	0	—	1.3× / 0.8
Piracy · Arabian Sea	1	7.5	0	—	0.1× / 10.2
Wrecks · Gulf of Thailand	1	7.4	0	—	new / 0
Incidents · Andaman or Burma Sea	1	7.3	0	—	new / 0
Piracy · Indian Ocean	1	6.9	0	—	0.2× / 6.4
Nav aids · Mediterranean Sea - Eastern Basin	1	6.9	0	—	1.0× / 1
Missiles · Barentsz Sea	1	5.5	0	—	2.5× / 0.4
Other · South China Sea	1	5.5	1	5	new / 0
Wrecks · South Pacific Ocean	1	4.7	0	—	new / 0
Cable ops · North Sea	1	4.5	1	4	1.7× / 0.6
Piracy · Singapore Strait	1	4.4	0	—	new / 0
Exercises · Baltic Sea	1	4.2	0	—	1.0× / 1
Exercises · Andaman or Burma Sea	1	4	0	—	2.5× / 0.4
Incidents · Flores Sea	1	4	0	—	new / 0
Missiles · North Atlantic Ocean	1	3.8	0	—	5.0× / 0.2
Incidents · Adriatic Sea	1	3.1	1	3	2.5× / 0.4
Missiles · Arabian Sea	1	3.1	0	—	5.0× / 0.2
Nav aids · Gulf of Alaska	1	3.1	0	—	0.4× / 2.4
Quakes · Aegean Sea	1	3	0	—	5.0× / 0.2
Derelicts · Baltic Sea	1	3	0	—	new / 0
Containers · Coral Sea	1	3	0	—	new / 0
Debris · English Channel	1	3	0	—	new / 0
Derelicts · Flores Sea	1	3	0	—	new / 0
Quakes · Gulf of California	1	3	0	—	5.0× / 0.2
Debris · Gulf of Mexico	1	3	0	—	new / 0
Quakes · Indian Ocean	1	3	0	—	0.3× / 3.2
Incidents · Japan Sea	1	3	1	2	1.7× / 0.6
Quakes · Malacca Strait	1	3	0	—	new / 0
Quakes · Molukka Sea	1	3	0	—	1.3× / 0.8
Containers · North Atlantic Ocean	1	3	0	—	0.6× / 1.6
Quakes · North Atlantic Ocean	1	3	0	—	1.7× / 0.6
Debris · North Pacific Ocean	1	3	0	—	1.7× / 0.6
Other · Philippine Sea	1	3	0	—	5.0× / 0.2
Debris · South Atlantic Ocean	1	3	0	—	5.0× / 0.2
Containers · South Pacific Ocean	1	3	0	—	5.0× / 0.2
Quakes · Southern Ocean	1	3	0	—	0.8× / 1.2
Debris · Tasman Sea	1	3	0	—	new / 0
Derelicts · Bismarck Sea	1	2.2	0	—	new / 0
Exercises · Coral Sea	1	2.2	1	2	2.5× / 0.4
Cable ops · Mozambique Channel	1	2.2	1	2	new / 0
Incidents · Gulf of Thailand	1	1.8	0	—	5.0× / 0.2
Derelicts · Solomon Sea	1	1.8	1	1	new / 0
Other · South Pacific Ocean	1	1.8	0	—	2.5× / 0.4
Incidents · Arabian Sea	1	1.7	1	1	0.5× / 2.2
Other · Irish Sea and St. George's Channel	1	1.6	0	—	new / 0
Surveys · Balearic (Iberian Sea)	1	1.4	1	1	new / 0
Exercises · North Atlantic Ocean	1	1.4	1	1	0.5× / 2.2
Exercises · Black Sea	1	1.1	0	—	2.5× / 0.4
Exercises · Indian Ocean	1	1.1	0	—	0.8× / 1.2
Nav aids · Andaman or Burma Sea	1	0.7	1	0	new / 0
Exercises · Gulf of Mexico	1	0.3	0	—	1.7× / 0.6
Nav aids · Indian Ocean	1	0.3	0	—	0.3× / 3
Nav aids · Great Australian Bight	1	0.2	0	—	2.5× / 0.4
Nav aids · Tasman Sea	1	0.2	0	—	2.5× / 0.4
Incidents · Bass Strait	1	0.1	0	—	new / 0
Incidents · Java Sea	1	0.1	0	—	new / 0
Incidents · Great Australian Bight	1	0	0	—	5.0× / 0.2
Surveys · Arctic Oceanlong running	0	248	8	829	0.0× / 0.2
Surveys · Beaufort Sealong running	0	186	6	904	— / 0
Nav aids · English Channel	0	93	2	301	0.0× / 2.8
Wrecks · North Sealong running	0	93	3	486	0.0× / 1.2
Wrecks · Persian Gulf	0	93	3	149	0.0× / 0.4
Wrecks · Arabian Sea	0	78.8	2	50	— / 0
Cable ops · Andaman or Burma Sea	0	62	2	59	0.0× / 0.4
Restricted · Black Sea	0	62	2	168	— / 0
Nav aids · Kara Sealong running	0	62	2	512	— / 0
War risk · Mediterranean Sea - Eastern Basinlong running	0	62	2	617	0.0× / 0.2
Wrecks · North Atlantic Oceanlong running	0	62	2	531	— / 0
Other · North Pacific Ocean	0	62	2	290	0.0× / 0.4
Restricted · North Sealong running	0	62	2	528	0.0× / 0.2
Nav aids · Sea of Okhotsklong running	0	62	2	408	0.0× / 0.2
Nav aids · South China Sealong running	0	62	2	535	— / 0
Wrecks · South China Sea	0	62	2	357	0.0× / 0.4
Surveys · The Northwestern Passages	0	62	2	178	— / 0
Wrecks · The Northwestern Passageslong running	0	62	2	879	— / 0
Cable ops · Gulf of Guinea	0	54.1	1	78	0.0× / 1.2
Cable ops · Indian Ocean	0	39	1	40	0.0× / 1.4
Cable ops · Arabian Sea	0	31	1	38	0.0× / 3.4
Surveys · Bering Sea	0	31	1	185	— / 0
Nav aids · Caribbean Sea	0	31	1	69	0.0× / 0.6
Surveys · Chukchi Sea	0	31	1	59	— / 0
Cable ops · Eastern China Sea	0	31	1	106	0.0× / 0.4
Nav aids · Eastern China Sea	0	31	1	352	— / 0
Nav aids · Gulf of California	0	31	0	—	0.0× / 0.2
Derelicts · Gulf of Omanlong running	0	31	1	395	0.0× / 0.2
Wrecks · Irish Sea and St. George's Channel	0	31	1	224	0.0× / 0.2
Cable ops · Malacca Strait	0	31	1	59	0.0× / 0.2
Surveys · Mozambique Channel	0	31	1	56	0.0× / 0.2
Restricted · North Atlantic Ocean	0	31	1	34	0.0× / 0.8
Surveys · North Pacific Ocean	0	31	1	181	0.0× / 0.4
Structures · North Sealong running	0	31	1	535	— / 0
Nav aids · Persian Gulf	0	31	1	97	— / 0
Volcanic · Philippine Sea	0	31	1	277	0.0× / 0.2
Wrecks · Philippine Sea	0	31	1	262	— / 0
Surveys · Sea of Marmara	0	31	1	140	— / 0
Restricted · Sea of Okhotsklong running	0	31	1	476	— / 0
Spills · South Atlantic Oceanlong running	0	31	1	447	— / 0
Incidents · Tyrrhenian Sealong running	0	31	1	382	0.0× / 0.4
Wrecks · Yellow Sealong running	0	31	1	409	— / 0
Other · Mediterranean Sea - Eastern Basin	0	24	0	—	0.0× / 1.2
Cable ops · Alboran Sea	0	20.5	0	—	— / 0

Cite: seahazards.com Sea Ledger, 2013-01, 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.