I guess that is a plausible explanation (for the ship), I can roll with that, just seemed awfully tony for Jorah and also a bit risky to send Daenerys around in a single identified ship with Euron around.

I wonder what could have been if the Tyrion strategizing at the beginning of this season (or before this latest idiotic plan) had been listening to the Tyrion lecturing Daenerys about strategy during this episode?