asked the Parliamentary Secretary to the Admiralty whether he can give an assurance that anti-submarine craft now under construction have an adequate margin of speed over that of submarines belonging to foreign nations.

Yes, Sir.

In view of the extreme importance of this matter, can the hon. Gentleman give an assurance that Admiralty experts are absolutely satisfied that there is an adequate margin of speed over that of Russian submarines?

There is a later question about that.

Is the Admiralty bearing in mind the paramount importance of the speed and number of anti-submarine craft?

Yes, Sir.

Would the hon. Gentleman bear in mind that it is essential that these vessels, besides having extra speed, should have equipment suitable for use at that speed?

That is also under consideration and is being implemented.