As the search widens to the Andaman Sea and the west of Peninsular Malaysia, the multi-nation search party has deployed its air and sea assets to ﬁnd traces of MH370 and its passengers. Jermyn Chow reports on the assets used.
Countries using them: China and India
10 Chinese military satellites are capable of spotting an object as small as half a metre in size.
The Indian navy's Rukmini or GSAT-7 satellite has a nearly 2,000 nautical mile 'footprint' over the Indian Ocean region.
Including P-3 Orion, Seahawk naval helicopters and C-130
Countries using them: US, Singapore, Thailand, Vietnam, New Zealand, Australia
The P-3 plane's radar can spot something the size of a basketball if it is floating on water.
The helicopters, equipped with Forward Looking Infra-red cameras, can fly at night and cover up to 600 nautical square miles every 3 1/2 hours.
Unmanned Aerial Vehicles such as the ScanEagle on Singapore’s missile corvette can search for about 24 hours.
Submarine hunting sonar from Seahawkscan pick up tracking signals from the two black boxes and aircraft emergency beacons.
Countries: Malaysia, Singapore, US, China, Thailand, Vietnam
The ships have sonars that can "listen out" for echos that are reflected by debris or the black box in the water or the seabed.
Ships will usually rely on naked eye observations to spot items in the water before narrowing their search area and ﬁring up the sonars.
Submersible underwater craft
The free-swimming submersible DSAR 6 SRV, which is onboard the MV Swift Rescue Submarine Support and Rescue Vessel (SSRV), can search underwater to a depth of 500m.