With all the GPS tracking devices and systems available today, how can piracy of large ships occur...  How can they hide?

Tader..They can Hijack the ships with rifles easier than Guys with Sissors ..Pens..Razors can Hijack Planes with 40 MEN..repeat MEN  on it.. and

Indian Navy takes no Prisoners ... They learned well from their Bwiteesh Colonialist Invading Naval Prowess ... Rule Britannia ... Britannia Rules the Waves  ... LOLOL ... Sip and Cargo are $250 Million ... PLus the 25 hostages ... They have been getting paid for their Piracy judging by the new Mansions in Suburban Moga-Diss-you Somalia ...Effen !!