The Obama administration is denying this and saying no American ship has been taken.
Technically true since there are very few American flagged cargo ships at sea. Most fly “flags of convenience,” like the Panamanian or Liberian flags. I saw another news report that said this cargo ship was flagged by the Marshall Islands.
CNN just said there are no Americans on board, too.
http://www.independent.co.uk/news/uk/home-news/irans-military-seizes-us-cargo-ship-10210291.html
Headline:
US Navy dispatches destroyer after Iran ‘fires warnings shots and boards cargo ship’
Better news source from the UK.
Technically it is not an American ship being that it is registered in Marshall Islands.
Go here and you can see the ship's position in real time and it is just outside Bandar Abbas exactly as is being reported by Reuters and denied by the liars in the White House.
http://www.marinetraffic.com/ais/home?centerx=30¢ery=25&zoom=2&level1=140