舰艇的原子防护问题是一个十分广泛的课题。 自从一九四五年美国相继在日本广岛、长崎上空扔下两枚原子弹,在世人面前显示出原子武器的巨大破坏威力以来,原子武器发展迅猛。五十年代出现了威力比原子弹大几十倍的氢弹。继而,各种小型战术核武器如带核弹头的导弹、炮弹、鱼雷等相继问世。新近,美国又研制成功纯粹起放射性破坏作用的中子弹。 The issue of the atomic defense of ships is a very broad topic. Since the United States dropped two atomic bombs over Hiroshima and Nagasaki in Japan in 1945 in succession, the atomic weapons have been developing rapidly since the United States has shown the enormous destruction power of atomic weapons before the world. In the fifties there were hydrogen bombs that were several times as powerful as atomic bombs. In turn, various small-scale tactical nuclear weapons such as missiles, shells and torpedoes with nuclear warheads have been launched one after another. Recently, the United States has also successfully developed a neutron bomb that succeeds solely in the role of radioactive sabotage.