Sagar Defence Engineering builds uncrewed boats that patrol and survey without anyone aboard

A patrol boat needs a crew, and a crew needs food, rest, safety margins and a reason to be at sea.

For long, dull, dangerous work- surveying a seabed, watching a stretch of coast, checking a pipeline- the crew is the most expensive and most limiting part of the vessel.

Removing them changes the arithmetic.

An uncrewed boat can be smaller, stay out longer, work in conditions that would be unsafe for people, and cost a fraction of what a manned equivalent does.

India, with a coastline of over 7,500 kilometres and a large offshore energy industry, has a great deal of that work to do.