Design Report Guided Missile Submarine SSG(X) - AOE - Virginia ...

SSG(X) Design – VT Team 3 Page 80
4.6.3 Ship Service Electrical Distribution
The submarine’s integrated power system (IPS) is used to power the propulsion system, provide ship service
power, and charge the batteries. Power from the PEM fuel cell is sent to the main switchboard where it can then be
distributed to any of the three areas previously described. Ship service power is first sent to the zonal buses where it
is then distributed to the Power Conversion Modules (PCM) where it can be converted from DC to AC or AC to DC
as needed. These PCMs provide circuit protection and automatic reconfiguration for their particular area. Power
from the CAT 3512 diesel engines is converted from AC to DC in the same manor. SSG(X) will only use the CAT
3512 power while under snorkel for transiting, ship services and charging batteries as necessary.
4.7 Manning
The specific mission and smaller size of SSG(X) will require manning to have some special considerations.
Through expert opinion, the number of officers was set at 8. In concept exploration, the number of enlisted
personnel was calculated to be 21 with a manning automation and reduction factor of 0.54. Manning automation is
focused in on areas where technology or automation can simplify a process. Motor, pump, and generator
improvements over the past several years have allowed for these systems to have less maintenance and be more
reliable. Damage Control (DC) requires a large number of personnel to perform the various tasks. An on-going DC
Arms program is underway to reduce the required DC personnel to half. The focus is on advance detection, smart
valves, zonal water and smoke control, and an intelligent Supervisory Control System (SCS).
The SSG(X) manning breakdown was created using the SSN21 manning as a guide. The total crew for the
SSG(X) is 29, with 21 enlisted men and 8 officers. Manning is split into the following departments:
• Engineering
• Combat Systems
• Executive
• Navigation/Operations
• Supply
These departments were further broken down into divisions as described in Table 53 which lists the department,
division, and the enlisted rate for the manning breakdown. MM is the rating for a Machinist Mate; EM is the rating
for the Electrician’s Mate; ET is the rating for Electronics Technician; YN, PN is the rating for Yeoman Personal
Man; STS is the rating for Sonar Technician Submarine; SK is the rating for Storekeeper.
Table 53 - Manning Departments, Divisions, and Rates
Department Division Rate
Engineering AUX MM
Engineering MM MM
Engineering E EM
Combat Systems Weps MM
Combat Systems ST STS
Executive Exec YN, PN
Navigation/Operations COM ET
Navigation/Operations NAV ET
Supply S SK
Table 54 lists the manning summary for the SSG(X). Figure 73 shows the manning hierarchy.