Se marcares, ao largo, o lampejo
De um farol a marcar o caminho
Saberás ser o nosso desejo
Que jamais tu navegues sozinho.
[Note: the above poem is not my original work, but is inscribed on a lighthouse marking the Easternmost point of South America (see my poem 'Earliest Sunrise') . The English translation below is mine.]
Song of the Hydrographer
If, as you set sail, you take note of the flash
Of a lighthouse to mark the way
You will know it to be our desire
That you never sail alone.
Kim Barney
http://www.poemhunter.com/poem/can-o-do-hidr-grafo/