Attach a Transponder to Relocate Underwater Assets

Press Release
Monday, April 01, 2013
Diver with Interrogator, Inset Transponders: Image credit JW Fishers

JW Fishers, manufacturers of underwater search equipment, advise that transponders make locating underwater objects easy.

Attempting to relocate underwater objects in a low visibility environment can be a difficult and time consuming task.  Acoustic transponders solve this problem. Not long ago transponders were expensive pieces of equipment used primarily by the military, oil and gas industries, and oceanographic institutions. Today these underwater locating beacons are being employed by a wide range of users including commercial diving companies, law enforcement agencies, universities, environmentalists, and companies in the energy industry.

JW Fishers, has introduced a line of low cost transponders and an interrogator used to locate them. Fishers MFT-1 multifrequency transponder is capable of transmitting 9 different frequencies between 24 kHz and 33 kHz. Having transponders with different frequencies allows many to be deployed in the same area with each transmitting a unique signal. The standard MFT-1 will operate from 4 to 8 months depending on the type of batteries installed. An optional extended housing is available that accepts more batteries, tripling the operating time. A Very Long Duration housing is also an option which holds enough batteries to operate the transponder for several years.

Fishers DHI-1 interrogator is compatible with other manufacturer’s transponders as well as its own, and will detect transponders with frequencies in the range between 24 and 33 kHz. To get the transponder to start sending a signal, the interrogator first hits it with a 26 kHz coded pulse. The two devices will communicate with each other at a distance of up to 3,000 feet. The transponder then starts broadcasting its signal which is picked up by the interrogator, guiding the operator directly to it. The DHI-1 can either be carried by a diver or deployed from a boat. An earphone alerts the diver or topside operator to the detection of a signal, and a digital readout shows the distance, with a built-in compass providing the heading.  The DHI-1 has a rechargeable NiCad battery pack that powers the interrogator for 12 continuous hours.

For more information click here.

 

Maritime Reporter March 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

At Hamburg port E-mobility Project, BESIC enters crucial phase

Ten battery-operated heavy goods vehicles now transport containers between ships and the yard at the highly automated handling facility in the HHLA Container Terminal Altenwerder (CTA).

Rolls-Royce Wins Heyerdahl Award

Rolls-Royce has been awarded the maritime Heyerdahl Award 2014. The award was presented by His Majesty King Harald at the Norwegian Shipowners’ Associations Annual Conference in Oslo March 31.

Imtech Extends VSAT Coverage Above Europe

Imtech Marine expanded its Global Ku-band VSAT network with additional coverage above Europe. Next to the Telstar 12 satellite and the Intelsat 21, the Eutelsat

Subsea Defense

Maritime Reporter @ 75: The Daily Cartoon

Maritime Reporter & Engineering News was founded by John J. O'Malley (1905-1980) in 1939, and today ranks as the world's largest audited trade publication in the world serving the maritime industry,

Russian Navy Take Over Crimea Combat Dolphins

The combat dolphin program in the Crimean city of Sevastopol will be preserved and redirected towards the interests of the Russian Navy, according to a report by official news agency RIA Novosti.

KVH Precision Sensors for Geodetics' Inertial Navigation Systems

KVH Industries entered into a strategic partnership with Geodetics Inc., a leader in the development of real-time, high-precision position and navigation solutions.

Underwater Engineering

Oceanteam Financial Transformation Aids 2013 Business

Diversified offshore shipping company Oceanteam's CEO, Haico Halbesma, writes in the Annual Report 2013 that it was a year of consolidation and operational focus for Oceanteam Shipping ASA.

STEM: SeaPerch Underwater Robotic Championships

University of Southern Mississippi Site for Fourth National SeaPerch Challenge – Underwater Robotic Championships Excitement continues to build for the Fourth Annual National SeaPerch Challenge,

McDermott Elect G.P. Luquette Board Chairman

Provider of integrated engineering, procurement, construction and installation (EPCI) services for upstream field developments worldwide, McDermott International, say that Gary P.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Offshore Oil Pipelines Pod Propulsion Salvage Ship Repair Ship Simulators Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1905 sec (5 req/sec)