Which naval vessel is recognised as India first indigenously developed nuclear powered submarine forming an important part of the country strategic deterrence capability

Introduction / Context:
Nuclear powered submarines play a major role in the strategic defence capability of a country because they can remain underwater for long periods and carry strategic weapons. India worked for many years on an advanced technology vessel project to build such submarines within the country. This question tests your knowledge of the name of the first indigenously developed nuclear powered submarine of India.

Given Data / Assumptions:

• The question is about India first indigenously developed nuclear powered submarine.
• Four naval ships and submarines are listed as options.
• We assume a basic understanding of the difference between an aircraft carrier conventional submarine and nuclear powered submarine.

Concept / Approach:
The key idea is to connect the phrase nuclear powered submarine with the specific project name used in defence news. India indigenous nuclear submarine programme produced a class of submarines often referred to as Arihant class. Therefore if you can recall that Arihant is associated with nuclear propulsion and strategic missiles then the correct option becomes clear.

Step-by-Step Solution:
Step 1: INS Vikrant is the name used for an aircraft carrier not for a submarine. Step 2: INS Sindhurakshak is a conventional diesel electric submarine acquired from abroad and configured with Indian upgrades but it is not a nuclear powered submarine. Step 3: INS Trikhand is a frigate of the Indian Navy and again not a submarine. Step 4: INS Arihant is widely known as India first indigenously built nuclear powered ballistic missile submarine. Step 5: Therefore the vessel that fits the description in the question is INS Arihant.

Verification / Alternative check:
As an alternative check you can recall that India often names major strategic projects with meaningful Sanskrit names. Arihant means destroyer of enemies which matches the strategic role of a nuclear powered ballistic missile submarine. Official statements by the Indian Navy also describe INS Arihant as India first indigenous nuclear powered submarine which confirms that this is the correct answer.

Why Other Options Are Wrong:
INS Vikrant is an aircraft carrier and does not match the category of a submarine. INS Sindhurakshak is diesel electric and imported in origin so it is not an indigenous nuclear powered boat. INS Trikhand is a frigate focused on surface warfare and is not a submarine at all.

Common Pitfalls:
A frequent error is to choose a name that simply sounds familiar without remembering the type of vessel. Exam candidates sometimes mix up famous ship names across different classes carriers frigates and submarines. Another pitfall is to assume that any well publicised warship must be the nuclear submarine which is not correct. Always connect the vessel type with its known role in defence news.

Final Answer:
The first indigenously developed nuclear powered submarine of India is INS Arihant.