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 TM 55-1905-242-14
0030 00
Manual Life Raft Deployment (continued)
5.
Roll the life raft from its rack (23) and allow it to roll over the life raft rail (19) on its way overboard.
6.
Once the raft is in the water, pull in the operating cord (22) until it is taut. Once the operating cord is taut, pull hard on
the cord to activate the raft's CO2 inflating system. Pressure from this system will break the two canister retaining straps,
separate the canister from the raft, and inflate the raft. The raft can be boarded in 30 seconds.
7.
Pull the life raft alongside the parent vessel, and board the life raft one at a time. Ensure that one Search and Rescue
Transponder (SART) is placed in each life raft, and that the Emergency Position Indicating Radio Beacon (EPIRB) is
deployed. Operation of the SART and EPIRB are described in the SART/EPIRB OPERATION section of this work
package.
8.
Once all personnel are onboard the life raft, cut the operating cord (22) to allow the life raft to move away from the parent
vessel.
Automatic Life Raft Deployment
1.
The life raft automatically deploys once the parent vessel has sunk. When the raft is submerged approximately 10 feet
(3.1 m), a hydrostatic release device (24) automatically releases the cradle restraining strap, which allows the raft to float
free of the cradle and parent vessel.
2.
The 100 foot (30.5 m) operating cord (22) connects the life raft to the parent vessel. When the parent vessel sinks beyond
the length of this cord, the raft's CO2 inflating system is activated.
3.
Pressure from the life raft's CO2 system will break the two canister retaining straps, separate the canister from the raft,
and inflate the raft.
4.
The buoyancy of the inflated raft will break the weak link connection on the operating cord (22) automatically, freeing the
raft from the parent vessel. The operating cord may also be cut to free the life raft.
SART/EPIRB OPERATION
SART
The SART provides location information to search radars operating in the X-band. Once activated, the SART detects the
radar signal of the search craft and sends a series of response pulses to the search radar of the search craft that causes a
series of 12 equally spaced arcs to appear on the radar display.
To operate the SART:
1.
Position the SART as high as possible in the life raft. The SART's range increases with its mounting height.
2.
Set to ON the ON/OFF/TEST switch (25).
3.
When the ON/OFF/TEST switch (25) is ON, the SART immediately enters the Test Mode. In this mode, both yellow
and green lights (26) and the buzzer are tested. After approximately 1 second, the SART enters Receive Mode.
4.
In Receive Mode, the yellow light (26) flashes slowly. The SART remains in Receive Mode until it receives a pulse
from a search radar.
5.
When a radar pulse is received, the SART switches to Reply Mode and transmits a series of pulses that appear on
the search radar display as a series of arcs leading away from the SART's position. Reply Mode is indicated by rapid
flashing of the red and yellow lights (26).
6.
With a fully charged battery pack, the SART will operate in Receive Mode for a minimum of 96 hours. After this time
period, it will still respond to normal interrogations for an additional 8 hours.
0030 00-6
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