Cable ops
Seismic survey 24 thru 31 dec by M/V nan hai 502 towing 7500 meter long cable in area bound by 20-20S…
HYDROLANT 2788/99
- issued
- 1999-12-23 06:10Z
- status
- cancelled 2000-01-01 06:00Z (archive)
- authority
- NAVAREA V 1172/99
- sea
- South Atlantic Ocean
- position
- -21.066, -39.342
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. SEISMIC SURVEY 24 THRU 31 DEC BY M/V NAN HAI 502 TOWING 7500 METER LONG CABLE IN AREA BOUND BY 20-20S 038-30W, 20-20S 040-00W, 21-40S 038-30W, 21-40S 040-20W. FOUR MILE BERTH REQUESTED. 2. CANCEL THIS MSG 01 JAN 2000.
This area · cable & pipeline work
1320 within 180 nm since 1998 · 0 in the last 12 months · 0 in force now
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- Underwater operations 1100Z to 2100Z daily 19 thru 24 apr by cableship intrepid in 20-22.45S 040-11.23W2021-04-18
- Seismic survey in progress until 23 apr by nps sigma in area bound by 21-10.6S 039-55.5W, 21-10.5S…2016-04-12
- Seismic survey 10 thru 16 apr by nps sigma in area bound by 21-19.4S 039-57.5W, 21-17.3S 039-57.5W, 21-11.2S…2016-04-09
- Seismic survey in progress until 09 apr by M/V nps sigma in area bound by 21-00.6S 039-44.0W, 21-11.4S…2016-04-01
- Seismic survey 26 mar thru 02 apr by M/V nps sigma in area bound by 21-00.6S 039-44.0W, 21-11.4S 039-39.3W,…2016-03-27
- Seismic survey 19 thru 26 mar by M/V nps sigma in area bound by 21-19.07S 039-57.08W, 21-17.05S 039-57.08W,…2016-03-18
Season · when cable & pipeline work happen here
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month of issue, all years in the archive
Nearby now · within 120 nm
- Underwater operations 0800Z to 1800Z daily 08 thru 22 aug by M/V marsanne and M/V comando b in 20-23.57S…Surveys · 60.7 nm
- Underwater operations 1100Z to 2100Z daily 12 thru 21 aug by M/V comando b and M/V faneromeni in 20-23.67S…Surveys · 61 nm
- Underwater operations 1100Z to 2100Z daily 13 thru 22 aug by M/V comando b and M/V am kirti in 20-23.90S…Surveys · 61 nm
- Underwater operations 0800Z to 1800Z daily 11 thru 25 aug by M/V comando b and M/V faneromeni in 20-23.00S…Surveys · 61.2 nm
- Underwater operations in progress until 27 aug by M/V navios felix and M/V comando b in 20-22.12S 040-08.38WSurveys · 61.3 nm
- Underwater operations 0800Z to 1800Z daily 02 thru 16 aug by M/V comando b and M/V royal topaz in 20-21.62S…Surveys · 61.4 nm
- Underwater operations 1100Z to 2100Z daily 15 thru 29 aug by M/V comando b and M/V rosco banyan in 20-23.37S…Surveys · 62.1 nm
- Foul ground until 06 dec 27 in area bound by 19-53.87S 039-59.68W, 19-54.15S 039-59.27W, 19-53.08S…Wrecks · 79.3 nm
- Survey operations in progress until 09 jul 27 by M/V bgp dragon towing 250 meter long cable in area bound by…Surveys · 82 nm
- Odas buoy temporarily established until 13 apr 27 in 21-34.20S 040-43.62WNav aids · 83.2 nm
- Barra de itabapoana light 21-18.80S 040-57.90W unlit until 08 sep 26Nav aids · 92.1 nm
- Underwater operations 281000Z jul to 192100Z aug by M/V umi polaris in area bound by 21-53.65S 040-49.70W,…Surveys · 94.1 nm
Worldwide now
40 cable & pipeline work in force · see all
Cable ops
Cable laying, pipeline and seismic operations. All current cable & pipeline work →
Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.