Mk 25 Marine Location Marker
The Mk 25 marine location marker (fig. 8-24) is
launched from aircraft or surface craft. It is primarily
launched from aircraft to provide day or night reference
points in marking the course of enemy submarines. It is
suitable for any type of sea-surface reference-point
marking that calls for both smoke and flame for 10 to 20
Mk 58 Mod 1 Marine Location Marker
The Mk 58 Mod 1 marine location marker (fig.
8-25) is used for long burning, smoke and flame
reference-point marking on the ocean's surface. In
addition to being used for antisubmarine warfare, it is
also used for search and rescue operations. It is also
used for man-overboard markings and to provide a
target for practice bombing at sea. This marker
produces a yellow flame and white smoke for 40 to 60
minutes. The marker is visible from an aircraft for at
least 3 miles under normal operating conditions.
Define pyrotechnics as used in the military.
What are the two hand-held signaling devices
used by downed aircrew and personnel in
distress over land or at sea?
The Mk 25 Mod 0 aircraft parachute flare is
used for what purpose?
The Mk 58 Mod 1 Marine location marker is
used for what purpose?
LEARNING OBJECTIVE: Identify the
types, uses, and basic characteristics of
cartridges and cartridge-activated de-
With the advent of the high-performance jet
aircraft, aviation relies more and more on CADs. CADs
are small explosive-filled cartridges used to fire other
explosives or release mechanisms. CADs provide high
reliability and easy maintenance. The cartridges
undergo rigid quality control throughout design and
dependable only when they have been properly
handled and installed. In a personnel escape system,
Malfunction of a device or failure to fire when needed
usually results in injury or death to the pilot and/or crew
members. Escape operations performed by cartridges
and CADs are canopy removal, seat ejection, streaming
of ejection seat drogue chutes, and parachute opening.
It is not possible to discuss all the cartridges and
CADs in this TRAMAN. Therefore, a few representa-
tive cartridge systems are briefly discussed.
PERSONNEL ESCAPE DEVICE
High-speed aircraft have many designs, special
control features, and space limitations. As a result, a
sequence of emergency operations must be carried out
before it is possible for pilot and/or crew members to
escape. CADs allow several operations to be performed
concurrently (at the same time), or in rapid sequence, to
3.080 DIA. MAX.
2.976 DIA. MAX.
Figure 8-24.Mk 25 marine location marker.