The NBS tweeted that a corvette named "Soobrazitelny" with registration number 531 had been spotted just 4.8 kilometers from the maritime border.
Armed Forces on 6 DEC in LV EEZ 2,6 nmi from territ. waters spotted RU Navy's corvette 531 Soobrazitelny.
— NBS (@Latvijas_armija) December 6, 2014
The latest spot maintains a week-long trend of sightings, each getting slightly closer to the border line as Russia seemingly attempts to intimidate and test the patience of its neighbors.
'Soobrazitelny' is a modern Steregushchiy class ship, launched as recently as 2010. It is a formidable fighting ship with a top speed of 27 knots (50 km/h), a helicopter landing pad and surface-to-air missiles, torpedoes and anti-submarine depth charges.
On Sunday, the NBS reported a spate of Russian military aircraft flying over neutral waters in the Baltic Sea, also not far from the Latvian border.
NATO Baltic Air Policing QRA F-16 jets on 7 DEC scrambled to intercept RU Armed Forces 4x Tu-95; 2x Tu-22 over the Baltic Sea.
— NBS (@Latvijas_armija) December 7, 2014
Later, yet further sightings were reported:
NATO Baltic Air Policing QRA CF-188 jets on 7 DEC scrambled to intercept RU Armed Forces 3x Tu-134, 1x An-72 over the Baltic Sea.
— NBS (@Latvijas_armija) December 7, 2014