What will affect the value of this surface speed for mild steel, is the cutting conditions:

That was the U-32'S top surface speed, he had to get into patrol position as swiftly as possible.

It was a missile boat, with a considerable surface speed, yet able to dive and move underwater.

Relative to the surface speed of the swift, the worker turns quite slowly.

They may have a surface speed of a few knots but generally their underwater speed is less than a knot.

This was selected to give them the necessary surface speed to keep up with the British battle fleet.

More phenomenal than her forty-knot surface speed was the ship's underwater pace of thirty!

The 1500s were built to a 92 metre double-hulled design, with an emphasis on surface speed and a long range.

This device can also be used to measure the surface speed of water and continuously manufactured materials.

This led to a significant reduction of surface speed from 15 to 8 knots.