HWT

heavyweight torpedo

IMU

inertial measurement unit

INS

inertial navigation system

IOC

initial operating capability

IRAD

independent research and development

LELFAS

low-endurance low-frequency active surveillance

LHT

lightweight torpedo

LPI

low probability of intercept

LRIP

low rate initial production

LWT

lightweight hybrid torpedo

MEM

microelectromechanical

MODS

modifications

MSII

milestone two

NETSAT

networked sensors and torpedoes

NRC

National Research Council

NSWC/CD

Naval Surface Warfare Center, Carderock Division

NSWC/IH

Naval Surface Warfare Center, Indian Head

NUWC

Naval Undersea Warfare Center

OEG

Operations Evaluation Group

O&MN

operations and maintenance, Navy

ONR

Office of Naval Research

OSD

Office of the Secretary of Defense

OTIIB

part “B” of the operational evaluation (conducted prior to the Milestone III decision)

PEO-USW

Program Executive Office, Undersea Weapons

PMS

Program Manager, Naval Sea Systems Command

R&D

research and development

RDT&E

research, development, testing, and evaluation

RMS

Remote Minehunting System

S&T

science and technology

SCEPS

Stored Chemical Energy Propulsion System

SNR

signal-to-noise ratio

SSN

nuclear-powered submarine

STEP

Stealth Torpedo Enhancement Program

TLWR

Top Level Warfare Requirements

TSE

tactical support element



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