Navigational warnings, week 2012-W37

2012-09-10 to 2012-09-16 UTC

  1. 09-10
    24
  2. 09-11
    35
  3. 09-12
    15
  4. 09-13
    15
  5. 09-14
    31
  6. 09-15
    19
  7. 09-16
    18
issued
157
cancelled
139
in force at end
332
of these still in force
0

What this reporting period contains

157 messages have issue dates in this period, and 139 have cancellation dates in it. A cancellation can close a message issued earlier; subtracting these totals does not give a count of new incidents.

Exercises accounts for 28 of 157 recorded messages (18%), the largest category group in this selection.

HYDROPAC accounts for 64 of 157 recorded messages (41%), the largest source series group in this selection.

Separate updates to the same activity count as separate messages. The original records below show what was reported and when.

Issued · by type

Exercises28
Incidents22
Other20
Missiles18
Cable ops15
Surveys14
Nav aids13
Derelicts8
Icebergs8
Quakes7
Containers1
Ordnance1
Restricted1
Towing1

Issued · by sea

South Atlantic Ocean15
North Atlantic Ocean13
North Pacific Ocean13
South China Sea10
Indian Ocean9
Coral Sea7
Labrador Sea7
Black Sea6

HYDROPAC 64 · HYDROLANT 53 · HYDROARC 13 · NAVAREA IV 13 · NAVAREA XII 7 · USGS earthquakes 7

Issued · 157

Cancelled · 139

Not for navigation. Counts include only warnings we display; ongoing search-and-rescue traffic is excluded until 30 days after it closes.

Navigational warnings, week 2012-W37 (2012-09-10 to 2012-09-16) · seahazards