NRP João de Lisboa

NRP João de Lisboa was a 2nd class sloop (or aviso) of the Portuguese Navy. She was designed to operate in the Overseas territories of Portugal.

History
Portugal
Name	NRP João de Lisboa
Builder	Arsenal da Marinha - Lisboa
Launched	21 May 1936
Fate	1961 converted to hydrographic vessel
General characteristics
Class and type	Pedro Nunes class
Displacement	1,017 tons standard, 1,217 tons full load
Length	70.5 m (231 ft)
Beam	10.0 m (32.8 ft)
Draught	3.1 m (10 ft)
Propulsion	2 MAN Diesels; 2,400 hp
Speed	16 knots (30 km/h)
Complement	140
Armament	2 × 120 mm guns, 4 × 40 mm guns, 2 × throwers for depth charges

Its name was given in honor of the Portuguese explorer and cartographer João de Lisboa. It became a research vessel from 1961 until 1966. [1]