to celebrate the 175th anniversary of the shipping line. After arriving at Liverpool the previous day, Queen Mary 2 made a brief excursion to the entrance of the River Mersey to welcome her two fleetmates into port in the early afternoon. The three Cunarders then sailed, in formation, towards Liverpool. The ships spent several hours together, before the departure of Queen Mary 2 to Saint Peter Port, Guernsey. On 2 July 2015, Queen Mary 2 began a 175th Anniversary Crossing in Southampton. She sailed first to Liverpool, leaving that city after a fireworks display on 4 July, the actual anniversary date of Cunard's first transatlantic voyage. Queen Mary 2 followed the route of the original ship Britannia, calling first at Halifax, Nova Scotia. After a day there, she headed first upriver into the harbor, using her bow thrusters and swivel-pod motors to negotiate the tight turnaround to come back down close to the cityfront. A 21-gun salute and bagpipe band honored the ship. From Halifax, the ship sailed to Boston and was there for a full day at the cruise terminal (Boston was the terminus of the original crossing in 1840). In the evening the ship backed out into Boston Harbor, where a fireworks display was presented before Queen Mary 2 sailed away. After a night and day at sea, the vessel entered New York Harbor early the morning of 14 July and docked at the Brooklyn Cruise Terminal. Later in the evening the vessel sailed to the lower harbor, between the Statue of Liberty and the Battery, for the Forever Cunard Queen Mary 2 Light Show. 2016 refit In June 2016, Queen Mary 2 underwent a $132 million/£90 million renovation at Blohm+Voss over 25 days. Major changes include the addition of fifteen single-occupancy staterooms, thirty additional balcony staterooms, and ten more animal cages for an enlarged kennels. According to Blohm+Voss, the refit included the installation of exhaust gas scrubbers and filters to reduce emissions. Atlantic rescue On 10 June 2017, Queen Mary 2, commanded by Captain Christopher Wells, came to the rescue of a stranded solo yachtsman, 73-year-old Mervyn Wheatley, whose craft Tamarind had been disabled by a strong storm while participating in the Observer Single-handed Trans-Atlantic Race. British and Canadian coastguards coordinated this long-range rescue after they detected Tamarind's distress beacon. Queen Mary 2 was guided to Wheatley's position by a Royal Air Force Lockheed C-130 Hercules aircraft.