(160424) -- BUENOS AIRES, April 24, 2016 (Xinhua) -- Members of the Argentina's Navy orchestra play during the farewell to the midshipmen prior to starting their instruction travel in the frigate ARA Libertad (Q-2), at the port of Buenos Aires, capital of Argentina, on April 23, 2016. According to local press, the ship ARA Libertad (Q-2), began on Saturday its 45th instruction trip carrying on board the cadets of the last year of the Naval Military School and neighboring countries such as Brazil, Chile, Bolivia, Paraguay and Uruguay. (Xinhua/Martin Zabala)