The News Corp chief's yacht was launched in 2006 and boasts "stunning/unique Christian Liagre interior" and a "unique six-cabin layout". It can reach a cruising speed of 13 knots and accommodate 12 guests and 10 crew members.
The sale of the 82-year old's yacht comes months after the media mogul announced he would be divorcing his third wife, Wendi Deng, after 14 years of marriage. Deng's share of $11bn (£7 billion) fortune will depend on the prenuptial agreement they signed before their 1999 wedding.
Rosehearty is described by Camper & Nicholsons, which manage the yachts of the world's richest people, as "majestic, innovative and full of character", boasting water skis, a wakeboard and diving gear.
"She was designed and constructed for worldwide cruising and is ideal for both private and charter use. Throughout her living areas, a neutral colour palette is used again pale oak woods and Hermes leather furnishings to create a truly luxurious feel.
"The formal dining area showcases a more intimate atmosphere with a dark wood table and chairs, soft lighting and warm red seating. She comfortably accommodates up to 12 guests in a full-beam master suite, two identical VIP staterooms, two doubles and a single with Pullman berth.
"The aft deck offers ample space for sun lounging with three steamer-style loungers while the large upper deck and flybridge feature sunpads, that extend the full width of the aft section with a large Jacuzzi in front.
"She sports aluminium masts and carbon furling booms with the latest in-boom furling for mainsail and mizzen and the trademark Perini captive reel winches, all designed and built by Perini Navi."
Murdoch's sale of Rosehearty is not the first time the media mogul has felt the need to make some extra money, after putting his yacht up for rent for £190,000 in 2009.