others are used for several different applications. In the
next section, we will first cover shipboard computer
networks and workstations, followed by a discussion of
SHF satellite broadcasts and HF facsimile broadcasts.
We will complete the chapter with a discussion of
shipboard HF radio systems.
What is the purpose of the PMSV?
What does the proword "WILCO" indicate?
What would be the proper pronunciation of a
wind direction of 250° at 17 knots?
When relaying a current U.S. Navy ship
observation to a pilot over PMSV, what
information must not be released?
LEARNING OBJECTIVES: Identify the
components of the Tactical Environmental
Support System (TESS). Identify the systems
associated with the Navy Integrated Tactical
Environmental Subsystem (NITES). Identify
the components of the Interim Mobile
Oceanographic Support System (IMOSS).
Identify the basic functions of TESS and
There have been dramatic changes to shipboard
communications over the last several years. The advent
of the Internet and other advancements in
communications technology have improved
connectivity between ships and shore-based facilities.
These changes have greatly enhanced the quality of
environmental support provided by shipboard
Aerographers Mates. To make the most of these
changes, several new environmental computer
workstations and communication networks have been,
and will continue to be, introduced.
TACTICAL ENVIRONMENTAL SUPPORT
Aboard ship, a large portion of your workday will
be spent working at one of the Tactical Environmental
Support System (TESS) workstations. TESS is a
modular, interactive, computer-based system that
collects, processes, analyzes, displays, and
disseminates METOC data and products. It has been
installed afloat on most major combatant ships, such as
aircraft carriers and command ships, as well as ashore at
NAVMETOCCOM regional centers and facilities, and
at Tactical Support Centers (TSC).
The original version of TESS was developed in the
mid 1980s as the first stand-alone environmental
workstation and has been the backbone of METOC-
related information for the shipboard Aerographers
Mate. TESS has gradually evolved into a complete
environmental and communications workstation. In
1990, the TESS (3) system was introduced. It provided
a larger selection of meteorological and oceanographic
products and was the first system that provided
connectivity between ships and shore-based METOC
activities. The Shipboard Meteorological and
Oceanographic Observing System (SMOOS) was also
introduced in conjunction with TESS (3). Since then,
technology advancements such as the Internet have
made enormous amounts of environmental information
readily available. As a result, TESS-Next Century
(TESS-NC) was introduced in 1997 to take advantage of
this technological surge. However, until TESS-NC is
fully fielded, an interim system, known as TESS-NC
Transition, has been made available to the fleet.
The environmental software programs in TESS are
ultimately designed to provide tailored meteorological
and oceanographic products, as well as electromagnetic
propagation, acoustic, and satellite products. This
information is used to provide direct tactical support to
naval air, surface, and USW operations. TESS assesses
the effects of the environment on fleet platforms,
weapons, and sensors. TESS products are designed to
be timely, valid, and practical. The analyses and
predictions from TESS are based on information
obtained from various telecommunications channels as
well as on-scene observations. In addition, TESS
makes use of radio teletype information, HF and
satellite information, scientific models, and historical
data. In chapter 2, we will describe some of the TESS
software programs and their applications.
The TESS-NC Transition system consists of
several personal computers and accessories. The
TESS-NC Transition takes advantage of a variety of
Commercial off-the-shelf (COTS) products, hardware,
and software. Installation of this system provides added
functionality not previously supported by TESS (3),
including direct ship-to-ship and ship-to-shore