system, and the APU. We briefly described the LCAC's
permit the installation of service changes and other
maintenance actions requiring extended periods.
maintenance system and the troubleshooting techniques
used in isolating and repairing equipment malfunctions.
Depot Level Maintenance
In the last part of this chapter, we described the
propulsion and electrical control systems used on the
Depot level maintenance is conducted at a ship
PHM class ships. We covered the procedures used for
repair facility, at a shipyard, or at the shipbuilder's
foilborne and hullborne operations. We discussed the
facilities. The work accomplished at the depot level
components of the main propulsion system and the
consists of major repairs, overhauls, modifications,
ship's electrical system. We briefly described the
rework, and maintenance tasks beyond the scope of the
troubleshooting procedures used to repair the foilborne
MLSG. The depot repair point for the PHM LM2500
and hullborne control systems. You were given a brief
gas turbine is NADEP, North Island, California. The
description of the electrical distribution system used on
Garrett ME 831-800 gas turbine receives depot level
the PHM. You also read about how the PHM class ships
maintenance at the contractor's facilities.
receive shore power from a mobile electric power unit.
We also discussed some of the auxiliary systems that
interface with the main propulsion systems. Finally, we
described the unique maintenance system associated
This chapter has provided you with a variety of
with the PHM and the MLSG.
information to help you become familiar with the
propulsion systems and electrical systems on the LCAC
As a GSM, you may find yourself assigned to one
and PHM class ships.
of these classes of ships. This chapter should have
provided you with a basic understanding of the
In the first part of this chapter, we discussed several
of the control systems used on the LCAC. We also
engineering systems found on the LCAC and PHM class
discussed the control console, the vessel's electrical