Indian steel tycoon Naveen Jindal is on a mission to get more of his countrymen to fly the national flag . He's setting an example by flying flags the size of tennis courts.
It is the biggest private yacht in existence and comes with a missile-detection system, two helipads, a luxury spa, swimming pool and a miniature submarine.
But when you're Russian oligarch Roman Abramovich, only the most ostentatious displays of wealth will do.