An early arrival on the Clyde on Tuesday in advance of the forthcoming Joint Warrior exercise was the Brazilian Navy's frigate DEFENSORA. One of a group of sisters built in the 1970s by Vosper Thornycroft at Woolston to their 'Mark 10' design, DEFENSORA was launched in 1975 and commissioned two years later. An anti-submarine frigate of 129.2 metres length, she is equipped with a Vickers Mk 8 114mm gun forward, ASPIDE surface-to-air missiles and Exocet missiles as well as 2 x triple 12.75 inch torpedo tubes for Mk 46 torpedoes. Power comes from twin screws driven by four diesel engines, giving a speed of 22 knots, with additional power coming from two gas turbines giving a top speed of around 30 knots. One helicopter can be embarked.