#2 From the FAS page on Virginia class subs:The New Attack Submarine's sail configuration houses two new photonics masts for improved imaging functions, and improved electronics support measures mast, and multi-mission masts that cover the frequency domain for full-spectrum, high data-rate communications. The sail is also designed for future installation of a special mission-configurable mast for enhanced flexibility and warfighting performance.
Sounds to me like they just replaced the old goes-up-and-down periscope tube with something more modern. You still have a way to look around outside. |