Survey vessels searching for the lost Malaysian airliner are using a wide variety of sonar and other electronics. This image shows the deployment of several types of sonar: a magnetometer, a seismic system and an underwater vehicle.

Survey vessels searching for the lost Malaysian airliner are using a wide variety of sonar and other electronics. This image shows the deployment of several types of sonar: a magnetometer, a seismic system and an underwater vehicle.

Survey vessels searching for the lost Malaysian airliner are using a wide variety of sonar and other electronics. This image shows the deployment of several types of sonar: a magnetometer, a seismic system and an underwater vehicle.