Soon we had reached a depth of four feet or more.
It also shows the technology used to reach such depths.
The main shaft had reached a depth of 213m by 1902.
Water pressure will hold the air until we reach operational depth.
He may, however, finally have reached a political depth from which it will be impossible to rise.
The submarine is said to be able to reach a depth of 328 feet.
That knowledge seemed to reach depths in him which it had never touched before.
If that race is any guide, this year's presidential campaign may reach new depths.
It was clear to me that my singing voice would never reach traditional male depths.
It is 5,770 m long and reaches depth of 165m below sea level.