If one or two cabins are accidentally damaged in the course of navigation, seawater will not flood the other cabins and the vessel will remain afloat.

UNESCO: CULTURE

And so the President would surely reiterate the principles that he has consistently articulated on the need for a peaceful resolution, for a diplomatic process that is collaborative and consensual, on the rejection of threats or use of force or the use of coercion, the importance of freedom of navigation, and of course on the unimpeded lawful conduct.

WHITEHOUSE: The White House

The prototypes have a unique intelligent navigation system which enables them to plot their own course.

BBC: Mars robots begin test campaign

Security researcher Hugo Teso was able to "hijack" the systems to feed false navigation information to a simulated jet that made it change course.

BBC: Hacker targets flight deck computer systems

"It will be every bit as luxurious as the original Titanic but of course it will have state-of-the-art 21st Century technology and the latest navigation and safety systems, " he said in a statement.

BBC: Australian billionaire Clive Palmer to build Titanic II