HNLMS Van Amstel passing an Astute class submarine

While the HNLMS Van Amstel was sailing up the Firth of Clyde on a hazy Monday afternoon, an Astute class submarine was sailing out. The Dutch frigate F831 passed the submarine surprisingly closely at Inellan.

It is very unusual to see a nuclear submarine sailing on the Firth of Clyde without heavy protecting from about 7 police patrol boats.