S.701 Search &
Rescue Transponder (SART) from SevenStar
Electronics Limited has been designed to fulfil and exceed the requirements
of X-band Marine Search & Rescue Radar Transponders as specified for use
GMDSS community. It has been designed and built using the most
modern components available, and offers several features which give it
significant advantages over earlier generation SARTs.
been Type Approved to both the
FCC and EU MED requirements
and carries the 'Wheelmark'
It was specifically designed with life-raft fitment in
mind, as well as conventional 'carry-off' use. It is
of auto activation in liferaft installations, and is
one of the smallest and
lightest SARTs available today.
low power consumption
made it the
first SART that could be
shipped globally as NON-HAZARDOUS goods
(*check with Sartech for latest shipping regulations). And
unique digital design
brings new levels of sophistication, with reduced component count and
The 12 dots in the picture are the clearly recognisable SART radar
models are currently available. The
model is the full
Carry-Off version, with mounting bracket, tether, and straps. It can be
fixed to any convenient bulkhead or wall. The
is the liferaft
version, supplied on its own to make the most of its ultra-slim profile
and stow easily inside the raft. It can also be arranged to activate
automatically as the raft inflates. An optional 1 meter telescopic
mounting pole is also available.
is the result of
many years experience in the specification, design, manufacture and use of
SARTs and related marine safety equipment. It brings together the ultimate in
high-reliability design, modern manufacturing techniques and 'designed-in' ease of
deployment. It produces an instantly recognizable “12 dot” radar
return to alert and then direct rescue vessels to the survivors.
More about SARTs:
And Rescue Transponders (SARTs) are mandatory carriage safety devices
that form part of the
Maritime Distress And Safety System
(GMDSS). SARTs are
transponders, and operate exclusively in the 'X-band' part of the radio
spectrum, receiving and transmitting at nominally 9,200 MHz to 9,500 MHz.
They are deployed during maritime emergencies as an aid to rapidly locating survivors who may be adrift in a life raft.
Many studies have shown that rescue time is absolutely critical in minimising
loss of life after abandoning ship. The conditions aboard a liferaft can be
unpleasant and disorienting!
Once activated, a SART
‘listens’ for an incoming radar signal from a passing vessel – note that
this can be from ANY vessel or aircraft equipped with a standard X-band radar set, and is
not restricted to specific Search & Rescue craft.
the SART receives a valid signal, it switches into Transmit mode, and responds
to each valid signal by transmitting
a series of twelve (12) sweeps through the band 9,200 to 9,500 MHz, each
transmission lasting just
over 100 microseconds in total. This signal is seen on the passing vessel’s or
aircraft's radar screen as a line of twelve dots, with the SART position being given by the
closest dot. This is a clear, unmistakable, Internationally
and shows the presence AND location of a vessel, survivor or life raft
with an active SART.
'CARRY-OFF' SART AND BRACKET
Where to buy=>
combination of extensive market knowledge, state-of-the-art microwave design and
highly relevant manufacturing experience has produced a new generation of SART
that delivers the following key benefits:
Physically small and light
(only 40mm thick, and
(*check with Sartech for latest shipping regulations)
The first SART to be
Easy to carry-off and deploy (easy shape to hold, light)
Easy to install permanently in liferafts
(smooth, very low profile)
of automatic activation as liferaft deploys
electronics that are
sealed for life,
no adjustable parts
to guarantee lifetime performance
It is one of the smallest
and lightest SARTs so far, and it was the
SART that could
be shipped as
goods* - this makes it a lot easier and cheaper to
arrange shipments anywhere in the world since the change in carriage legislation
in Jan 2003. It's small size and efficient packaging further reduces shipping
costs - a single liferaft model in its carton takes up less than 0.5kg
'volumetric weight'! (*please check with Sartech for latest shipping
the primary parameters are set and stored digitally within the S.701 SART,
ensuring that its performance will NOT 'drift off' over time as with
conventional analogue designs.
It has been designed to be equally applicable to the
‘Carry-Off’ SART market AND to the new liferaft-mounted requirements. (From
July 2004, one in
four liferafts on Ro-Ro ferries HAS to fit a SART. It obviously makes more
sense for ALL the liferafts to fit one.) Its sleek
appearance also makes it an attractive and highly effective safety addition for
both yachts and power cruisers.
be delivered to market at a price where it is cheaper to buy a new SevenStar
SART than it is to replace the battery pack on many older units!
Replacement battery pack:
The battery pack on the S.701 SevenStar SART should be changed every 5
years, or if the unit has been accidentally damaged or activated (a
brief period is allowed periodically for annual testing.) The S.701 was
the first SART that can be shipped
as non-hazardous goods*, and the
replacement battery pack was also able to be shipped as non-hazardous
goods for many years*. (*Please check with Sartech for the latest
replacement battery pack kit is available from our distributors, and is
capable of being fitted by a competent service engineer with only a
2.5mm hex driver. The kit includes a new gasket, screw and O-ring, as
shown in the photo.
The S.701 from SevenStar is also
unique in that the SART
electronics remain totally sealed
during battery pack removal and refitting - it is impossible to damage
or de-tune the electronics, or allow the accidental ingress of moisture.
S.701B Replacement Battery Pack