the.com/dreadnought

the battleship so dominant it instantly made every other navy on Earth obsolete overnight

means A class of large, heavily armored battleship with big-caliber guns, so powerful its 1906 debut rendered all earlier battleships outdated — or, more loosely, anything formidable and unstoppable.

from A literal compound from English: 'dread' (fear) + 'nought' (nothing) — one who dreads nothing, fears nothing. The word existed for centuries as a name for a fearless person and for a thick coat that braved foul weather, but it became immortal when Britain's Royal Navy launched HMS Dreadnought, a battleship so revolutionary it gave its name to an entire class — and to a naval arms race.

name origin: HMS Dreadnought launched 1906, meaning fear nothing
arms race: triggered the naval buildup that fed World War I
all big guns: first warship armed with uniform heavy main guns
turbine power: steam turbines made it faster than every rival
u-boat kill: the original Dreadnought is the only battleship to sink a submarine

for instance

hms dreadnought — british battleship launched 1906, first all-big-gun warship that revolutionized naval warfare

sms dreadnought — german naval response launched 1908, sparked the pre-wwi arms race

uss dreadnought — american nuclear submarine launched 1941, first true submarine to submerge