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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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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As an example, we have two special guests with us here today -- Marine Lance Corporal James Sperry and Hannah.

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