SEM
standard electronic module
SMR
source, maintenance, and recoverability
SQCI
ship quality control inspector
ship's service diesel generator
SSDG
SSGTG
ship's service gas turbine generator
SSPU
ship's service power unit
TCPI
temperature compensated pitch indicator
TD
technical directive
TIT
turbine inlet temperature
TLI
tank level indicator
TOPS
turbine overload protection system
TRAMAN
training manual
TYCOM
type commander
UPS
uninterrupted power supply
WHB
waste heat boiler
AII-5