Unofficial Group - La Famiglia di Smokeone

[Magoo!]

Solution (typing w/ one hand):

The Yacht had Cardi in the ventilation. Malta has the stuff in the air (unless the OCs wanted to chomp on some razor grass), so it would be reasonable to assume that a Yacht especially would have the stuff in the air. And, like air, any ship worth its salt would have an ample supply (of Cardamine).