Navigational warnings, week 2011-W17

2011-04-25 to 2011-05-01 UTC

  1. 04-25
    26
  2. 04-26
    25
  3. 04-27
    27
  4. 04-28
    28
  5. 04-29
    19
  6. 04-30
    24
  7. 05-01
    22
issued
171
cancelled
152
in force at end
291
of these still in force
0

What this reporting period contains

171 messages have issue dates in this period, and 152 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 35 of 171 recorded messages (20%), the largest category group in this selection.

HYDROPAC accounts for 88 of 171 recorded messages (51%), 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

Exercises35
Nav aids26
Incidents26
Other21
Cable ops18
Missiles11
Quakes9
Piracy7
Derelicts6
Ordnance5
Surveys3
Debris2
Mines1
Containers1

Issued · by sea

North Pacific Ocean23
South Pacific Ocean19
South Atlantic Ocean17
Indian Ocean9
North Atlantic Ocean7
South China Sea6
Bay of Bengal6
Arabian Sea5

HYDROPAC 88 · HYDROLANT 48 · NAVAREA XII 12 · NAVAREA IV 12 · USGS earthquakes 9 · HYDROARC 2

Issued · 171

Cancelled · 152

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-W17 (2011-04-25 to 2011-05-01) · seahazards