The Amazonas class comprises three offshore patrol vessels (OPVs) built by VT Shipbuilding (now BAE Systems Surface Ships).

[7] They are designed to perform a range of Economic Exclusion Zone (EEZ) management, special operations and maritime law enforcement tasks.

The first vessel was named Port of Spain at her launch at BAE Systems Surface Ships’ Portsmouth facility, on 18 November 2009.

The second was named Scarborough on her launch a day later at Scotstoun in Glasgow, and began sea trials in July 2010, reaching 25.38 knots (47.00 km/h; 29.21 mph).

Then, despite two of the vessels having been completed at the time and awaiting delivery, and with crew training ongoing in the United Kingdom,[10] the Government of the Republic of Trinidad and Tobago (GORTT) cancelled the order in September 2010.