Mansard roof

I see a mansard roof
Through the trees
I see a salty message
Written in the eaves
The ground beneath my feet
The hot garbage and concrete
And now the tops of buildings
I can see them too

The Argentines
Collapse in defeat
The admiralty surveys
The remnants of the fleet
The ground beneath their feet
Is a nautically-mapped sheet
As thin as paper
While it slips away from view