Sea Ledger, July 2015

2015-07-01 to 2015-07-31 · archive

issued: 584
warning-days in force: 9,818
in force at month end: 327
sea × type cells: 244

baseline: same month, previous 5 years (2014-07, 2013-07, 2012-07, 2011-07, 2010-07)

By type

type	issued	warning-days	in force at end
Incidents	167	1,164.8	47
Exercises	108	1,036.8	29
Nav aids	67	2,398.7	79
Cable ops	52	1,201.6	48
Quakes	38	113.4	5
Icebergs	31	36.7	2
Surveys	30	1,197.7	39
Missiles	26	198.3	3
Derelicts	19	172.6	5
Other	18	686.4	21
Spills	13	205	4
Restricted	3	263.7	9
Ordnance	3	62.9	2
Wrecks	2	828	24
Towing	2	28.5	1
Debris	2	5.3	1
Structures	2	71.6	3
Volcanic	1	70.1	3
War risk	0	62	2
Piracy	0	11.3	0
Mines	0	2.7	0

By sea and type · 200 cells, most issued first

cell	issued	warning-days	at end	longest d	vs 5 y
Incidents · Mediterranean Sea - Eastern Basinsurge	35	141.6	6	34	4.5× / 7.8
Incidents · North Pacific Ocean	31	93.3	6	46	1.5× / 20.6
Icebergs · Labrador Seasurge	30	32.9	2	32	3.8× / 8
Exercises · North Pacific Ocean	21	75.5	3	35	1.6× / 13
Exercises · Yellow Seasurge	20	161.1	4	37	2.2× / 9
Incidents · South China Sea	19	146	6	40	1.6× / 12
Incidents · North Atlantic Ocean	16	111.9	3	68	1.4× / 11.4
Quakes · South Pacific Ocean	13	37.3	2	32	1.1× / 12.4
Cable ops · North Atlantic Ocean	11	195.8	8	51	1.6× / 7
Nav aids · Indian Oceansurgelong running	11	120.4	5	527	14× / 0.8
Exercises · Black Sea	11	60.7	1	35	1.4× / 7.6
Incidents · South Pacific Ocean	10	30.4	0	—	1.7× / 6
Quakes · North Pacific Ocean	9	27	0	—	1.1× / 7.8
Nav aids · North Atlantic Oceanlong running	8	173.9	5	848	1.4× / 5.8
Cable ops · Gulf of Mexicosurge	8	135.7	9	64	20× / 0.4
Nav aids · North Sealong running	8	75.8	2	964	0.8× / 10
Missiles · North Atlantic Ocean	8	31	0	—	1.2× / 6.8
Nav aids · South Atlantic Ocean	7	504.7	16	211	1.1× / 6.6
Surveys · North Atlantic Oceansurgelong running	7	227.2	7	423	3.9× / 1.8
Other · South China Seasurgelong running	6	160.8	5	709	30× / 0.2
Incidents · Davis Straitsurge	6	52.6	4	56	2.7× / 2.2
Missiles · North Pacific Ocean	6	30.5	1	29	0.9× / 6.4
Cable ops · Arabian Seanew	6	24.9	2	20	new / 0
Exercises · Mediterranean Sea - Eastern Basin	6	15.7	1	28	1.1× / 5.2
Exercises · North Atlantic Oceansurge	6	11.5	0	—	3.8× / 1.6
Cable ops · South China Sea	5	127.2	5	296	1.0× / 4.8
Cable ops · North Sea	5	115.5	5	135	1.0× / 5.2
Exercises · Philippine Sea	5	83.1	2	35	1.3× / 3.8
Incidents · Indian Ocean	5	49.9	2	50	0.4× / 12.4
Missiles · Barentsz Seasurge	5	36.5	0	—	6.3× / 0.8
Surveys · Black Seasurge	5	36	3	18	3.1× / 1.6
Incidents · Arabian Seasurge	5	31.5	1	27	5.0× / 1
Exercises · South Atlantic Ocean	5	30.1	0	—	0.8× / 6.4
Other · Mediterranean Sea - Eastern Basinsurge	5	21.1	0	—	13× / 0.4
Exercises · South Pacific Ocean	5	19.3	2	21	1.8× / 2.8
Exercises · Bay of Bengal	4	89.1	2	38	0.8× / 4.8
Incidents · Gulf of Mexico	4	78.1	3	57	1.3× / 3.2
Surveys · North Seasurge	4	29.7	1	33	6.7× / 0.6
Nav aids · English Channel	4	25	1	25	1.8× / 2.2
Incidents · Philippine Sea	4	17.2	1	15	1.7× / 2.4
Incidents · Laccadive Seasurge	4	15.4	2	74	5.0× / 0.8
Derelicts · Bay of Bengalsurge	4	10.2	0	—	6.7× / 0.6
Exercises · Gulf of Mexicosurge	4	8.7	0	—	3.3× / 1.2
Exercises · Mediterranean Sea - Western Basinsurge	4	6.5	0	—	10× / 0.4
Nav aids · Beaufort Seasurge	4	4.6	1	28	20× / 0.2
Incidents · Coral Sea	4	0.6	0	—	0.8× / 4.8
Nav aids · Gulf of Mexicolong running	3	185.5	5	531	0.9× / 3.4
Nav aids · Coral Sealong running	3	109.7	4	469	1.5× / 2
Exercises · South China Sea	3	86.9	2	56	0.7× / 4.2
Incidents · Caribbean Sea	3	72.8	2	56	0.9× / 3.2
Spills · Gulf of Mexico	3	71	2	42	0.8× / 4
Nav aids · North Pacific Oceanlong running	3	69.5	3	385	0.9× / 3.2
Restricted · Black Seasurgelong running	3	60.3	3	786	15× / 0.2
Ordnance · Sea of Azovnew	3	56.6	2	37	new / 0
Incidents · Bay of Biscaysurge	3	54.7	2	60	15× / 0.2
Spills · Bering Seasurge	3	42	0	—	7.5× / 0.4
Incidents · South Atlantic Ocean	3	39	1	41	0.5× / 6.2
Spills · North Atlantic Ocean	3	36	2	34	1.9× / 1.6
Cable ops · Celtic Seasurge	3	32.2	1	36	3.8× / 0.8
Nav aids · South Pacific Ocean	3	17.2	2	19	1.7× / 1.8
Derelicts · Indian Ocean	3	14.3	0	—	0.6× / 4.8
Exercises · Baltic Sea	3	12.5	1	28	1.3× / 2.4
Quakes · Coral Seasurge	3	8	1	30	2.1× / 1.4
Derelicts · Laccadive Seanew	3	7.9	0	—	new / 0
Exercises · Coral Sea	3	6.9	0	—	1.7× / 1.8
Cable ops · Norwegian Sea	2	131.3	4	61	0.4× / 4.6
Nav aids · Arabian Sealong running	2	84.8	3	471	10× / 0.2
Incidents · Mediterranean Sea - Western Basin	2	63.9	3	43	2.5× / 0.8
Nav aids · Davis Strait	2	63.1	2	47	10× / 0.2
Surveys · South China Sea	2	53	3	39	3.3× / 0.6
Other · North Atlantic Oceanlong running	2	50.6	1	627	5.0× / 0.4
Other · Arabian Sea	2	40.8	2	161	2.5× / 0.8
Exercises · Arabian Sea	2	39.8	1	44	0.6× / 3.2
Structures · Persian Gulfnew	2	35.3	2	30	new / 0
Nav aids · Irish Sea and St. George's Channel	2	31.2	1	60	0.8× / 2.4
Cable ops · Caribbean Sea	2	30.2	2	26	10× / 0.2
Cable ops · Baltic Sea	2	28.6	1	28	10× / 0.2
Towing · Sea of Okhotsk	2	28.5	1	28	10× / 0.2
Spills · Caribbean Seanew	2	28	0	—	new / 0
Surveys · Gulf of Mexico	2	19.8	2	19	2.5× / 0.8
Surveys · Arabian Sea	2	17.6	0	—	10× / 0.2
Nav aids · Gulf of Alaska	2	8.7	0	—	1.7× / 1.2
Missiles · Japan Sea	2	7.9	0	—	3.3× / 0.6
Missiles · White Seanew	2	7	0	—	new / 0
Quakes · Indian Ocean	2	6	0	—	1.1× / 1.8
Quakes · North Atlantic Ocean	2	6	0	—	2.5× / 0.8
Quakes · Philippine Sea	2	6	0	—	2.5× / 0.8
Exercises · Bering Sea	2	4.7	0	—	1.4× / 1.4
Derelicts · Coral Sea	2	3.8	0	—	1.3× / 1.6
Incidents · Hudson Strait	2	1	0	—	5.0× / 0.4
Nav aids · Caribbean Sealong running	1	326.5	10	655	0.6× / 1.8
Exercises · Aegean Sea	1	213.2	7	210	2.5× / 0.4
Surveys · South Atlantic Oceanlong running	1	153.6	4	366	0.2× / 5
Cable ops · Sea of Okhotsk	1	82.6	3	60	0.8× / 1.2
Nav aids · Bass Straitlong running	1	65.8	3	851	1.7× / 0.6
Wrecks · North Atlantic Ocean	1	63.6	2	345	5.0× / 0.2
Other · North Pacific Oceanlong running	1	62.7	2	1,201	0.8× / 1.2
Cable ops · Barentsz Sea	1	43.5	1	99	0.8× / 1.2
Nav aids · Inner Seas off the West Coast of Scotland	1	40.6	1	97	0.5× / 2
Other · South Atlantic Oceanlong running	1	33	1	634	1.3× / 0.8
Exercises · Laccadive Sea	1	32.2	1	32	0.4× / 2.8
Surveys · Bering Sealong running	1	31	1	392	1.3× / 0.8
Cable ops · Kara Sea	1	28.2	1	28	0.6× / 1.8
Surveys · South Pacific Ocean	1	28	1	28	new / 0
Surveys · English Channel	1	26.4	0	—	5.0× / 0.2
Incidents · Persian Gulf	1	25.5	1	25	new / 0
Incidents · Japan Sea	1	25	1	25	5.0× / 0.2
Cable ops · Gulf of Suez	1	24.7	0	—	new / 0
Surveys · Kara Sea	1	16.6	1	16	1.3× / 0.8
Derelicts · South China Sea	1	15.2	0	—	0.8× / 1.2
Wrecks · English Channel	1	14	1	13	1.3× / 0.8
Spills · Gulf of Alaska	1	14	0	—	1.7× / 0.6
Spills · North Pacific Ocean	1	14	0	—	0.8× / 1.2
Exercises · Barentsz Sea	1	10.6	0	—	5.0× / 0.2
Derelicts · Mozambique Channel	1	9	0	—	new / 0
Surveys · Bass Strait	1	8.7	0	—	new / 0
Volcanic · Caribbean Sea	1	8.1	1	8	new / 0
Incidents · Eastern China Sea	1	7.2	0	—	5.0× / 0.2
Incidents · Ionian Sea	1	6.8	0	—	5.0× / 0.2
Surveys · Gulf of Suez	1	6.7	0	—	1.7× / 0.6
Missiles · Indian Ocean	1	6.4	0	—	5.0× / 0.2
Cable ops · Tasman Sea	1	6.1	0	—	new / 0
Quakes · Solomon Sea	1	5.2	0	—	0.4× / 2.8
Cable ops · Bristol Channel	1	5.1	0	—	new / 0
Missiles · Laccadive Sea	1	4.9	0	—	1.0× / 1
Surveys · Barentsz Sea	1	4.8	0	—	1.7× / 0.6
Derelicts · Gulf of Mexico	1	4.6	0	—	1.3× / 0.8
Nav aids · Tasman Sea	1	4.4	0	—	2.5× / 0.4
Incidents · Gulf of Boni	1	4	0	—	new / 0
Cable ops · North Pacific Ocean	1	4	1	3	new / 0
Exercises · Celtic Sea	1	3.7	0	—	2.5× / 0.4
Quakes · Andaman or Burma Sea	1	3	0	—	5.0× / 0.2
Derelicts · Arafura Sea	1	3	0	—	0.8× / 1.2
Debris · Bay of Biscay	1	3	0	—	new / 0
Quakes · Bering Sea	1	3	0	—	0.8× / 1.2
Quakes · Caribbean Sea	1	3	1	2	new / 0
Derelicts · Mediterranean Sea - Eastern Basin	1	3	0	—	5.0× / 0.2
Quakes · Molukka Sea	1	3	0	—	5.0× / 0.2
Quakes · South Atlantic Ocean	1	3	0	—	1.0× / 1
Icebergs · South Atlantic Ocean	1	3	0	—	0.3× / 3
Quakes · Gulf of Alaska	1	2.9	1	2	1.7× / 0.6
Missiles · South Pacific Ocean	1	2.6	1	2	0.5× / 2
Incidents · Bay of Bengal	1	2	0	—	0.4× / 2.6
Derelicts · Bass Strait	1	1.4	1	1	new / 0
Nav aids · Bristol Channel	1	0.8	0	—	5.0× / 0.2
Incidents · Solomon Sea	1	0.8	1	0	1.7× / 0.6
Debris · South Pacific Ocean	1	0.8	1	0	5.0× / 0.2
Cable ops · Philippine Sea	1	0.7	0	—	new / 0
Incidents · Sea of Okhotsk	1	0.7	1	0	5.0× / 0.2
Incidents · The Northwestern Passages	1	0.6	0	—	5.0× / 0.2
Incidents · Bass Strait	1	0.3	0	—	5.0× / 0.2
Derelicts · South Atlantic Ocean	1	0.2	1	0	0.7× / 1.4
Other · Arafura Sea	1	0.1	0	—	0.8× / 1.2
Incidents · Banda Sea	1	0	0	—	2.5× / 0.4
Surveys · Arctic Oceanlong running	0	186	6	1,740	0.0× / 1.6
Wrecks · Arabian Sealong running	0	168.4	5	834	0.0× / 0.4
Surveys · Beaufort Sealong running	0	155	5	1,815	0.0× / 3.4
Restricted · North Sealong running	0	155	5	1,226	0.0× / 1
Wrecks · Solomon Sea	0	93	3	143	— / 0
Nav aids · South China Sealong running	0	93	3	1,446	— / 0
Exercises · Ionian Sea	0	62	2	206	— / 0
Nav aids · Kara Sealong running	0	62	2	1,423	— / 0
Cable ops · Mediterranean Sea - Eastern Basin	0	62	2	52	0.0× / 1.6
Nav aids · Mediterranean Sea - Eastern Basin	0	62	2	210	— / 0
War risk · Mediterranean Sea - Eastern Basinlong running	0	62	2	1,528	— / 0
Other · North Sealong running	0	62	2	672	0.0× / 1
Other · Persian Gulf	0	62	2	112	0.0× / 0.6
Nav aids · Sea of Okhotsklong running	0	62	2	1,319	— / 0
Wrecks · Persian Gulf	0	55.4	1	138	— / 0
Wrecks · South China Sealong running	0	48.4	1	445	0.0× / 0.6
Other · Caribbean Sea	0	36.3	1	192	0.0× / 0.2
Derelicts · Arabian Sea	0	32.7	1	154	0.0× / 1.2
Nav aids · Eastern China Sealong running	0	31.3	1	1,263	— / 0
Missiles · Aegean Sea	0	31	1	210	— / 0
Other · Bay of Bengal	0	31	1	63	— / 0
Surveys · Caribbean Sea	0	31	1	171	— / 0
Wrecks · Caribbean Sea	0	31	1	290	— / 0
Nav aids · Celtic Sealong running	0	31	1	1,009	0.0× / 2
Surveys · Chukchi Sea	0	31	1	310	0.0× / 0.2
Other · Coral Sea	0	31	1	107	0.0× / 0.4
Wrecks · East Siberian Sea	0	31	1	283	— / 0
Cable ops · Eastern China Sea	0	31	1	121	— / 0
Volcanic · Eastern China Sea	0	31	1	63	— / 0
Other · English Channel	0	31	1	53	0.0× / 0.4
Nav aids · Great Australian Bight	0	31	1	149	0.0× / 0.6
Wrecks · Gulf of Guinea	0	31	1	71	— / 0
Wrecks · Gulf of Mexico	0	31	1	116	0.0× / 0.4
Other · Gulf of Suez	0	31	1	39	— / 0
Surveys · Indian Ocean	0	31	1	202	— / 0
Wrecks · Irish Sea and St. George's Channel	0	31	1	42	— / 0
Cable ops · Japan Sea	0	31	1	45	— / 0
Wrecks · Japan Sealong running	0	31	1	449	— / 0
Wrecks · Kara Sea	0	31	1	267	— / 0
Wrecks · Makassar Straitlong running	0	31	1	376	0.0× / 0.2
Nav aids · Malacca Strait	0	31	1	78	— / 0
Wrecks · Malacca Strait	0	31	1	113	— / 0
Nav aids · Mozambique Channel	0	31	1	80	0.0× / 0.2
Derelicts · North Atlantic Ocean	0	31	1	345	0.0× / 2.6
Structures · North Atlantic Oceanlong running	0	31	1	710	— / 0
Incidents · North Sea	0	31	1	39	— / 0

Cite: seahazards.com Sea Ledger, 2015-07, 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.