Sonardyne UK (Head Office)
T. +44 (0) 1252 872288
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www.sonardyne.com
Datasheet
ORT and DORT Acoustic Release Transponders
Description
Oceanographic Release
Transponders (ORTs) and Deep
Oceanographic Release
Transponders (DORTs) are tough,
reliable acoustic releases designed
for deployment in either 2,000
metres or 6,000 metres of water.
Key Features
•
Safe Working Load of 1,275Kg
(Options for heavier loads)
•
2,000 Metre or 6,000 Metre
depth rated options
•
Highly reliable release mechanism
•
Up to 3 years deployment
•
Excellent corrosion resistance
The units are commonly used to moor
oceanographic instrument strings on
the seabed for periods of up to 36
months. However, their compact size
allows them to be easily
incorporated into subsea instrument
frames or installed on towfish and
AUVs to enable ballast to be
dropped in an emergency.
•
Compact and rugged design
Standard features include a Safe
Working Load of 1,275Kg (at 4:1)
and a spring-assisted release
mechanism. This type of release
mechanism was originally developed
by Sonardyne for navigation
transponders supplied to the offshore
industry of which there are now
many thousands reliably in service
around the world.
ORTs and DORTs are controlled
using frequency band specific
Lightweight Command Units (LCU)
which comprises of a dunking
transducer connected either to a
spray-proof Psion or, via supplied
software, to any PC. For security of
operation, a special coding system
provides protection against
accidental release by noise and
acoustic transmissions from other
vessels.
SONARDYNE [ SONARDYNE SOUND IN DEPTH ]
