The Navy says it does not know what the attack submarine hit while it was submerged in the eastern Marianas Basin, some 560 kilometers south of Guam.
英
美
- 美国海军说,目前还不清楚这艘攻击潜艇在关岛以南560公里处的马里亚纳海盆东部潜航时撞到了什么物体。