One side has studs and the other eyes so that the corset can be easily fastened and unfastened from the front.

There was yet another barrier for the passage-an enormous boom that could be easily fastened in place in any emergency, to rip out the bottom of any ship.

However, as shown in the illustration, by attaching a framing angle at each end of the stud (against one of its broad surfaces), the stud can then be fitted into place and easily fastened to the plates by nailing vertically.

The wooden toggle-fastenings were made to be easily fastened and unfastened while wearing gloves in cold weather at sea.

Finally, the engineer obtained wires from forty to fifty feet long, which could be easily fastened together and stretched over the distance of five miles, which separated the corral from the bounds of Granite House.