To date, 58 U.S. nuclear submarines have been equipped with Sperry Marine VMS-based navigation systems, and 92 percent of them have been certified to use ECDIS-N as the primary navigation plot.
迄今为止，美国的58艘核潜艇都已配备了斯佩里海事VMS导航系统，其中92％已经获得认证，使用ECDIS-N作为主要的导航图。
ZetaTalk Explanation9/30/2009: Any plot of a magnetosphere will show output from the N Pole, regardless of what activity might be ongoing at the S Pole.
齐塔人之声2009.9.30解释：任何对磁气圈的描绘都将显示从北极的输出，无论南极在进行什么样的活动。
To date, 58 U. S. nuclear submarines have been equipped with Sperry Marine VMS-based navigation systems, and 92 percent of them have been certified to use ECDIS-N as the primary navigation plot.
迄今为止，美国的58艘核潜艇都已配备了斯佩里海事vms导航系统，其中92%已经获得认证，使用ECDIS - N作为主要的导航图。
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