As the Assurance IMO 8830920 and call sign NJMR. Of the Portuguese Dom Carlos I-class survey vessels. Building as the USNS Assurance (T-AGOS-5) of the Stalwart-class Ocean Surveillance Ships laid down on 31 May 1984, launched on 12 January 1985, commissioned on 1 May 1985, decommissioned on 6 January 1995, reserve since 30 November 1995, decommissioned on 9 December 1996, stricken on 6 February 1997, transferred to the Portuguese navy 28 October 1999, commissioned on 26 January 2000 as the Almirante Gago Coutinho. Displacement of 1.565 (light)-2,535 (full loaded), gross register tonnage 1.472 tons, deadweight 786 tons and as dimensions 62,10 (waterline)-68,28 x 13,10 x 4,57 metres. Her crew numbers 46 persons. Primarily for oceanographic research.
