The patrol vessels are propelled by two shafts powered by two Caterpillar 3616 V16 diesel engines rated at 6,197 horsepower (4,621 kW).

[2] The patrol vessels are armed with a single Bofors 57 mm (2.2 in)/70 caliber gun Mk 3 mounted forward capable of firing 220 rounds/minute to a range of 17 kilometers (11 mi).

The ships mount an Alenia 2 combat data system and Saab EOS 450 optronic director for fire control.

[3] On 6 December 2009, Durango, in a joint operation with a United States Coast Guard ship, intercepted four boats 55 nautical miles (102 km) from the Guatemalan – Mexico border in the Pacific Ocean.

Using the embarked Panther helicopter, Durango evacuated the two downed aircrew to a nearby naval hospital.