Performance of Waterjet Propulsion Systems- A Review of the State-of-the-Art

full of gas suspended on an umbilical 100 ft above one's base. The field of diving from submerged bases is as yet young. A relatively small amount of experience has been accumulated. It is too early to be able to say that one concept of life-support equipment is superior and another is unsatisfactory. Much more research, development, and field trial is needed. Each concept and procedure must be analyzed by the diving team with reference to situations existing at the time and place of the dive. Safety in the developmental phase can be enhanced if three basic guidelines are followed: