What is "u-boats"

Usage examples of "u-boats".

I understand that some of the latest U-boats are quite quick under water and one could easily be trailing us by Asdic without our knowing anything about it.

That, together with the fact that the number of operational U-boats in that same grim year rose from 91 to 212 made it certain that, by the law of diminishing returns, the British Merchant Navy would eventually cease to exist unless a miracle occurred.

Four-rotor Enigmas were restricted to U-boats and Sainte-Assise: correct?

Maybe now they'll be feeling like taking those gloves off, I shouldn't imagine that Admiral Doenitz will take too kindly to the idea of one of his U-boats having been sunk by a hospital ship.

But one depth-charge carries 450 lethal pounds of Amatol, and the Ulysses had destroyed two U-boats during the preceding winter.

But no one objected, no one grudged him his privilege: the Sirrus had an uncanny nose for trouble, an almost magnetic affinity for U-boats lying in ambush.

Why the U-boats had departed from their almost invariable practice of launching dawn attacks from the north, so as to have their targets between themselves and the sunrise, could only be guessed.

He was reasonably sure that the U-boats would be bunched-generally, they strung out only for the slow convoys.

The Adventurer, he knew, might remain there all day, unharmed-it was obvious that the Planter would be gone in a matter of minutes-but that would be a guarantee neither of the absence of U-boats nor of the sudden access of misguided enemy chivalry: the enemy would be there, would wait to the last possible second before dark in the hope that some rescue destroyer would heave to alongside the Adventurer.

That meant that the fog was gone-the fog that had saved the convoy, had hidden them from the U-boats when it had turned so sharply to the north.

His first thought was the numbing appreciation that the set must be smashed beyond recovery, that their last defence against the U-boats was gone.

About longitude 20° east, the convoy was heavily attacked by U-boats and aircraft.

Their fears, too, can be readily imagined, but even their darkest forebodings never conceived the dreadful reality: 23 merchant ships were sent to the bottom by U-boats and aircraft.

As for the rest, any more talk about U-boats would only put them off their lunch.

This could be a more effective way of stopping Allied supplies to Russia than all the U-boats in the North Atlantic and Arctic.