The U.S. Department of Defense has officially confirmed that U.S. Navy has fielded the new W76-2 low-yield submarine-launched ballistic missile (SLBM) warhead.
美國國防部正式確認，美國海軍已經部署了新型W76-2低當量潛射彈道導彈(SLBM)彈頭。
The warhead is a modification of the existing W76, which is used to arm submarine-launched Trident II missiles.
該彈頭是現有W76的改裝，用於裝備潛艇發射的三叉戟II導彈。
The advanced W76-2 warhead was first announced in the Trump administration’s Nuclear Posture Review (NPR) unveiled in February 2018.
先進的W76-2彈頭最初是在2018年2月公佈的特朗普政府的核態勢評估(NPR)中宣佈的。
There, it was described as a capability to “help counter any mistaken perception of an exploitable ‘gap’ in U.S. regional deterrence capabilities,” a reference to Russia.
在那裡，它被描述為一種能力，“幫助消除對美國區域威懾能力中可利用的‘差距’的任何錯誤認識”，這裡指的是俄羅斯。
The justification voiced by the administration was that the United States did not have a “prompt” and useable nuclear capability that could counter – and thus deter – Russian use of its own tactical nuclear capabilities.
美國政府提出的理由是，美國沒有“迅速”和可用的核能力來對抗-從而威懾-俄羅斯使用其自己的戰術核能力。
The deployment of a new nuclear weapon aboard a submarine was first reported by Jan. 29 by the Federation of American Scientists.
1月29日，美國科學家聯合會首次報道了在潛艇上部署新的核武器。
Last week, The Federation of American Scientists published a report detailing their belief Ohio-class ballistic missile submarine USSTennessee(SSBN-734) left the Kings Bay Submarine Base, Ga., for a strategic deterrent patrol at the end of 2019 carrying at least one W76-2 low yield warhead on a Trident submarine-launched ballistic missile (SLBM).
上週，美國科學家聯合會發表了一份報告，詳細說明了他們相信俄亥俄級彈道導彈潛艇USSTennessee(SSBN-734)離開喬治亞州國王灣潛艇基地，在2019年底進行戰略威懾巡邏，攜帶至少一個三叉戟潛射彈道導彈(SLBM)上的W76-2低當量彈頭。
“We estimate that one or two of the 20 missiles on the USSTennesseeand subsequent subs will be armed with the W76-2, either singly or carrying multiple warheads. Each W76-2 is estimated to have an explosive yield of about five kilotons. The remaining 18 missiles on each submarine like theTennesseecarry either the 90-kiloton W76-1 or the 455-kiloton W88,” wrote Hans Kristensen, the director of the Nuclear Information Project at the Federation of American Scientists.
“我們估計，美國海軍20枚導彈中的一枚或兩枚以及隨後的潛艇將裝備W76-2，要麼是單枚，要麼是攜帶多枚彈頭。每個W76-2估計具有大約5千噸的爆炸當量。每艘潛艇上剩餘的18枚導彈，比如田納西州的Tennesseecarry，要麼是90千噸的W76-1，要麼是455千噸的W88，“美國科學家聯合會核信息項目主任漢斯·克里斯滕森(Hans Kristensen)寫道。
The Defense News reported that the warhead design is a modification of the W76-1 warhead for the Navy’s Trident ballistic missile, which has allowed NNSA to quickly turn around the design since it was ordered in last year’s Nuclear Posture Review.
“國防新聞”報道，彈頭設計是對海軍三叉戟彈道導彈W76-1彈頭的修改，自去年的“核態勢評估”訂購以來，這一設計使美國國家安全局得以迅速扭轉設計。
The warhead is designed to be smaller than the weapon detonated at Hiroshima, Japan, during World War II.
彈頭被設計成比第二次世界大戰期間在日本廣島引爆的武器更小。
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