This new-type boat we designate as It
Because no other pronoun seems to fit.
No water-laden craft could be a He,
Nor one unspoken could be rated She.
The Germans call it unter: O. U. Cargo!
They aim to close the bar on the embargo.
Beneath the waves no lurching doth it feel
But speeds its course upon an even keel.
With duplex engines and a double crew,
(It's "manned" by mermaids when it's hid from view).