At her cruising speed of 14 knots, Planet Nine has a range of more than 6,000 nautical miles – thanks to the 90,000 gallons of fuel she can carry. Slow her twin Caterpillar 3516 engines down to a respectable 10 knots and that range rises to more than 10,000 miles, enough to cross from Sydney to Ushuaia, Argentina, and on up to the Caribbean, without halting for fuel. “That’s including fuel for the generators,” says Captain Rob Williamson, who oversaw the redesign of the power systems to reduce the hotel load to a single 275kW Cat genset, although there are three aboard. Couple that with her ice class hull, 2,400 gallons of aviation fuel (“around 10 times the range of an Agusta Grand,” says Williamson), 10,500 gallons of fresh water,…