NRP Gonçalo Velho
NRP "Gonçalo Velho" was a 2nd class sloop ("aviso de 2ª classe") of the Portuguese Navy. She was designed to operate in the overseas territories of Portugal. Construction and design. In 1930, Portugal set up a 10-year plan to modernise its Navy. As part of this programme, a contract was placed with the British shipbuilder Hawthorn Leslie for two sloops, to be named "Gonçalo Velho" and . They were based on the Royal Navy's s, but with a heavier armament and omitting the minesweeping equipment of the British ships. "Gonçalo Velho"s hull was long overall and  between perpendiculars, with a beam of and a draught of . Two Yarrow boilers fed Parsons geared steam turbines, giving and driving two propeller shafts, with a design speed of . 470 tons of oil were carried giving a range of at . Armament consisted of three 120 mm (4.7 in) guns in single mounts on the ship's centreline, with two forward and one aft. Four 2-pounder (40 mm) pom-pom anti aircraft guns were fitted, while four depth charge throwers provided an anti-submarine armament. "Gonçalo Velho" was laid down on 9 October 1931, and launched on 3 August 1932