ARC Antioquia was the name ship of her class of two destroyers built during the 1930s for the Armada Nacional República de Colombia.

The turbines, rated at 33,000 shaft horsepower (25,000 kW), were intended to give a maximum speed of 36 knots (67 km/h; 41 mph).

The destroyers carried enough fuel oil to give them a range of 5,400 nautical miles (10,000 km; 6,200 mi) at 15 knots (28 km/h; 17 mph).

[2] Antioquia was built in Lisbon, Portugal, as a Douro-class destroyer for the Portuguese Navy (the Marinha Portuguesa), and originally named NRP Douro.

The design of the six ships of the Douro class was by the British company Yarrow Shipbuilders, based on that of the Royal Navy's prototype destroyer HMS Ambuscade.

As the firing was to commence at 08:00 (on 21 January), and it was thought unlikely any vessels would be in the danger area, it was decided to proceed with the salute, ensuring the guns were elevated for maximum range (8,000 yards (7,300 m)), out to sea.