He had gone out with two others to do a 'bounce' - diving to a depth of 125 ft and then coming straight back up again.

After reaching a depth of 30 ft the craft began to lay down by the stern.

Lake Onega covers 3,764 m2, and reaches a depth of 400 ft (120 m).

It rests at a depth of 22-25 ft and is about 75 ft from shore.

The pit workings went down to a depth of 456 ft (138m).

"The digging goes on up to a depth of 500-600 ft," a geologist reasoned.

More recent soundings have revealed a depth of 487 ft (149 m).

The basin is deepest near Denver, where it reaches a depth of approximately 13,000 ft (3900 m) below the surface.

The Northern Stargazer can be found up to depths of 120 ft (36 m).

A quoted depth of 4.3m or 14 ft for the early 19th century is reflected by this evidence.