A depth charge fitted with a nuclear warhead is known as a nuclear depth bomb.
From the en.wikipedia.org
The depth penetration of bomb tritium can be separated into 3 distinct layers.
From the en.wikipedia.org
A submarine captain handles Tokyo Bay, depth charges, a lodged bomb and a crewman's rush appendectomy.
From the post-gazette.com
A penetrating bomb may or may not reach that depth or, even if it could, take out the actual command and control center.
From the edition.cnn.com
Bomb-sounding, echo-train analysis and manometer were some of the techniques used to determine the depth of the trench.
From the en.wikipedia.org
The very first blast took place in September of 1966, when a bomb with 1.5 times the power of the device that fell on Hiroshima was let loose at an ocean depth of 1.5 km.