Translation of "Submarinos" in English

Los submarinos echaron a pique muchos barcos.

The submarines sank a lot of ships.

Observó por el periscopio a los dos submarinos enemigos. Estaban en peligro y lo sabía, pero, ¿cómo escapar de ellos?

He looked at the two enemy submarines through the periscope. They were in danger and he knew it, but how were they going to escape from them?

La gente alaba a menudo a Cristóbal Colón por las tierras que descubrió, pero la mayoría no tiene ni idea de sus numerosos descubrimientos submarinos.

People often laud Christopher Columbus for all the lands that he discovered, but most are completely unaware of his numerous under-the-sea discoveries.