Ordered 1971, laid down at the Howaldtswerke at Kiel, Germany 1973, launched 21 August 1975 and commissioned July 1976. A type 209 design of Ingenieurskontor, Lubeck and sold via Ferrostaal at Essen, both in Germany. Armed with 8-21" torpedo tubes. Sister ship Congrio. Displacement 990 tons surfaced and 1.350 tons submerged and dimensions 177'1"x 20'3"x 18'0". Speed 10 knots surfaced and 22 knots submerged. Her crew numbered 31 men.
