(a) whether the Government have developed a plan for undertaking the production of a 20,000 tonne air defence ship;
(b) whether the Government have now plan to undertake production or procure a 30,000 tonne aircraft carrier;
(c) if so, the details thereof;
(d) the shipyards where the preliminary work has been started;
(e) the steps being taken to meet the emerging need of the Navy; and
(f) the progress made to fill up the gap developed due to discarding of INS `Vikrant` and `Virat`?