Then they were in the underwater craft moving cautiously toward shore.

Not exactly an underwater craft to be taken lightly in 1894.

He has utilized various skycraft and underwater craft.

But this third underwater craft didn't look like a snake.

In 1902, Holland received a patent for his persistent pursuit to perfect the underwater naval craft.

An underwater craft was coming rapidly toward them from the south!

If we look in the water out there, I believe we'll find a propeller-driven underwater craft that this fellow used to get here.

The crane operator used great caution in swinging the underwater craft over the stern before lowering it gently into its cradle.

'And that's to send out all our underwater craft on a general search.'

The facility was built over a strange underwater craft of unknown origin which both nations study to determine its origin.