Will change his form in battle.( battle) 

Ship ‘Sandhyak’: Ship ‘Sandhyak’ (Yard 3025), the first of four special survey vessels for the Indian Navy, was handed over to the Indian Navy on 4 December. The ship will provide limited security to the military in a secondary role other than survey and serve as a hospital during war and emergencies.( battle) 
The ship ‘Sandhyak’ has a displacement of approximately 3,400 tonnes and is 110 meters long. This is India’s largest survey vessel so far. At present the work of this ship is to conduct complete coastal and deep-water hydrographic survey of the routes leading to the port or harbour. Also, navigation channels or routes have to be determined.
According to the Defense Ministry, its operational area includes EEZ and maritime boundaries up to the Extended Continental Shelf. This vessel will also be used for defense and civilian work such as collecting oceanographic and geophysical data.
‘Sandhyak’ is equipped with state-of-the-art hydrographic equipment such as data acquisition and processing system, autonomous underwater vehicle, remote piloted vehicle, DGPS Long Range Positioning System, digital side scan sonar. Powered by two diesel engines, the vessel can move at a speed of more than 18 knots.
According to the Defense Ministry, the process of construction of this ship started on 12 March 2019 and it was launched on 5 December 2021. The ship has undergone extensive trials in port and at sea. After this, it was handed over to the Indian Navy on 4 December 2023. In terms of cost, Sandhyak has more than 80 percent indigenous content.
The Defense Ministry says that the delivery of Sandhyak is a confirmation of the encouragement being given by the Government of India and the Indian Navy towards ‘self-reliant India’. The induction of Sandhyak, despite Covid and other geopolitical challenges during construction, is the result of collaborative efforts of a large number of stakeholders, MSMEs and Indian industry towards enhancing the nation’s maritime power in the Indian Ocean Region