Navigational warnings, week 2011-W16

2011-04-18 to 2011-04-24 UTC

  1. 04-18
    19
  2. 04-19
    23
  3. 04-20
    23
  4. 04-21
    34
  5. 04-22
    14
  6. 04-23
    14
  7. 04-24
    14
issued
141
cancelled
159
in force at end
272
of these still in force
0

What this reporting period contains

141 messages have issue dates in this period, and 159 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 22 of 141 recorded messages (16%), the largest category group in this selection.

HYDROPAC accounts for 66 of 141 recorded messages (47%), 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

Exercises22
Other21
Incidents18
Nav aids17
Cable ops16
Quakes12
Missiles12
Piracy10
Surveys6
Derelicts5
Debris1
Ordnance1

Issued · by sea

North Pacific Ocean20
South Atlantic Ocean12
South Pacific Ocean6
North Atlantic Ocean6
Indian Ocean5
South China Sea4
Bay of Bengal4
Mediterranean Sea - Eastern Basin3

HYDROPAC 66 · HYDROLANT 48 · USGS earthquakes 12 · HYDROARC 6 · NAVAREA XII 5 · NAVAREA IV 4

Issued · 141

Cancelled · 159

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 2011-W16 (2011-04-18 to 2011-04-24) · seahazards