Describe a plotting board. Explain the method of computing the time from any plotted point to a mine. Act as plotter.
(d) Batteries, Generators, and Searchlights assigned to the Company of which the Candidate is a Member.
Name the batteries used in mine work. Describe the casemate battery. What precautions are necessary in keeping it in order? What is used as the signal battery in mine work? Describe a searchlight. Describe parts of generators and important points to be observed in caring for them.
(e) Apparatus and Operation of Casemate Switchboard and Care and Use of Telephone.
Name the apparatus of the switchboard. Explain how to fire a mine by judgment, and how to start the motor generator. Explain how to test mine and cable ends. How are boat telephones operated? Name the parts of fire-control telephones used in mine-commander stations, and give the principal points to be observed in operating them.
SECOND-CLASS GUNNERS.
General Information.
1. Gunnery is the science and art of operating and firing guns.
2. A gun is a machine which throws projectiles with great force in a certain direction under the expanding force of powder gas.
3. The army is composed of the following divisions: The line and the staff. The line is composed of Infantry, Cavalry, Artillery, Engineers, etc. The staff of Quartermaster Dept., Commissary Dept., Ordnance Dept., Signal Corps, Pay Dept., etc.