re: #85 FormerDirtDart

OK, by riverine craft/boat they likely are referring to these, part of the Navy Coastal Riverine units

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And yet you’ll get media outlets thinking ships this size or larger:

JUST IN: Two Navy boats detained by Iran in the Persian Gulf https://t.co/80jvaOIghH pic.twitter.com/pK93suYZ8s

— New York Daily News (@NYDailyNews) January 12, 2016

That’s an Arleigh Burke destroyer - DDG 99.