The new 42-metre DP2 fast crew boats will support offshore energy support operations in the Caspian Sea, with construction now under way at Baku Shipyard.
Following an underwater volcano eruption on Saturday, Tonga has suffered significant damage and is blanketed in ash that closed runways and threatens water supplies.
Evidence from underwater landslides during New Zealand's 2016 Kaikōura earthquake could help scientists better understand the world's largest, tsunami-generating quakes.