Lined up on the manufacturing floor of the Bourne-based company, Hydroid, the underwater robots look like torpedoes, with tail fins and rear propellers. They're different sizes, some six feet long, others more than double that length. The biggest one is painted a bright yellow submarine color, while the smaller ones are dark gray with black, so they're less easy to see when underwater.
"Two-thirds of our business is with the US Navy," said Hydroid president Duane Fotheringham. "We're also in 17 navies around the world. "