A Sail on the Ferry

Someone said that while crossing Cook Strait in stormy weather and surrounded by tourists, the idea came to her that everyone vomits in the same language.

Is it in some retched Esperanto, a thesaurus of Pelorus Sound
with chunder under thunder [or drowned]?
No matter! The view will comfort as you spew the yogurt
and spatter or barf that carafe into the drink.
Tough if haematemesis is your nemesis,
best undo the orange vest
and go below
if you think
you'll throw