Jane's Defence Weekly reports that the US Navy is planning to have an Amphibious Ready Group (ARG) to support US Marines based in Darwin ("USN contemplates two-ship ARG concept to support Australia-based marines", Grace Jean, Jane's Defence Weekly, 29 October 201). This may include the Australian designed JHSVs (Joint High Speed Vessels). The JHSVs are a militarized car ferries, designed by Austral in Western Australia, built built in the USA. The potential for such vessels to be sued for military supply first came to the US Navy's attention when HMAS Jervis Bay was used by the Australian Navy to supply the peacekeeping forces in East Timor. The RAN will have a similar capability to a US ARG, with its two Canberra-class landing helicopter dock ships., but lacking the US Marines fixed wing aviation combat element.
Showing posts with label Darwin. Show all posts
Showing posts with label Darwin. Show all posts
Sunday, December 01, 2013
Australian Designed High Speed Warships for Australian Based US Marines
Jane's Defence Weekly reports that the US Navy is planning to have an Amphibious Ready Group (ARG) to support US Marines based in Darwin ("USN contemplates two-ship ARG concept to support Australia-based marines", Grace Jean, Jane's Defence Weekly, 29 October 201). This may include the Australian designed JHSVs (Joint High Speed Vessels). The JHSVs are a militarized car ferries, designed by Austral in Western Australia, built built in the USA. The potential for such vessels to be sued for military supply first came to the US Navy's attention when HMAS Jervis Bay was used by the Australian Navy to supply the peacekeeping forces in East Timor. The RAN will have a similar capability to a US ARG, with its two Canberra-class landing helicopter dock ships., but lacking the US Marines fixed wing aviation combat element.
Tuesday, June 01, 2010
Volcanic Ash Advisory from Darwin
The Volcanic Ash Advisory Centre Darwin issued a code "Orange" warning for New Britain in the South West Pacific on 31 May 2010. The advisory consists of a text message and map of the ash plume from a volcano identified from satellite imagery.
There are nine Volcanic Ash Advisory Centres covering most of the world and usually located in the national meteorological offices of countries near areas of volcanic activity. The Darwin Volcanic Ash Advisory Centre is run by the Australian Bureau of Meteorology and is located in Darwin, near the volcanically active areas of Indonesian, Papua New Guinea and the Philippines.
As with Tsunami warnings, the Volcanic Ash Advisory messages are formatted as upper case English text. One exception is that a web address is included in the message in lower case. This could be a problem for systems which handle only upper case. The message indicates the URL should be lower case, but this is human readable only. Sample message format:
There are nine Volcanic Ash Advisory Centres covering most of the world and usually located in the national meteorological offices of countries near areas of volcanic activity. The Darwin Volcanic Ash Advisory Centre is run by the Australian Bureau of Meteorology and is located in Darwin, near the volcanically active areas of Indonesian, Papua New Guinea and the Philippines.
As with Tsunami warnings, the Volcanic Ash Advisory messages are formatted as upper case English text. One exception is that a web address is included in the message in lower case. This could be a problem for systems which handle only upper case. The message indicates the URL should be lower case, but this is human readable only. Sample message format:
IDD41290From: "New_Britain SW_Pac",Volcanic Ash Advisory,
VA ADVISORY
DTG: 20100531/1627Z
VAAC: Darwin
VOLCANO: Ulawun 0502-12
PSN: S0503 E15120
AREA: New_Britain SW_Pac
SUMMIT ELEV: 2334M
ADVISORY NR: 2010/44
INFO SOURCE: MTSAT-1R
AVIATION COLOUR CODE: ORANGE
ERUPTION DETAILS: VA PLUME TO FL100 LAST OBS 70NM TO W AT 31/0430Z.
OBS VA DTG: 31/1630Z
OBS VA CLD:
SFC/FL100 S0520 E15130 - S0515 E14955 - S0420 E14955 -
S0440 E15130 - S0520 E15130 MOV W 10KT
FCST VA CLD +6HR: 31/2230Z
SFC/FL100 S0520 E15130 - S0515 E14950 - S0420 E14955 -
S0440 E15130 - S0520 E15130
FCST VA CLD +12HR: 01/0430Z
SFC/FL100 S0520 E15130 - S0515 E14940 - S0415 E14940 -
S0440 E15130 - S0520 E15130
FCST VA CLD +18HR: 01/1030Z
SFC/FL100 S0520 E15130 - S0525 E14940 - S0405 E14940 -
S0435 E15130 - S0520 E15130
RMK: VA PLUME NOT IDENTIFIABLE ON THE LATEST SAT IMAGERY,
BUT EXPECTED TO BE IN AREA. Graphic at [lower case]
http://www.bom.gov.au/info/vaac/advisories.shtml
NXT ADVISORY: NO LATER THAN 20100531/2230Z
Volcanic Ash Advisory Centre Darwin, 31 May 2010.
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