INS and DVL for Out-of-Straightness Surveying

Inertial and Doppler, the Perfect Combination for 3D Pipeline Buckle Surveys
The move to deeper water, the proliferation of subsea completions, and the continued drive to lower costs are driving the requirement for more accurate out-of-straightness surveys. Pipelines are being designed to higher tolerances and are carrying warmer products at higher pressure. It is assumed that pipes will expand and move throughout their lifetime. Surveys are required to confirm that there are no un-planned buckles in the line. This article shows how INS (Inertial Navigation System) and DVL (Doppler Velocity Log) may be combined to meet these requirements. Out-of-straightness surveys are required to confirm that the pipe has moved as expected... (read more)
2012-04-19 04:27:25

Oceaneering International Orders Six Deep-water DVLs

Rowe Technologies (USA) has received an order for six SeaPilot DVLs from Oceaneering International (USA). Rowe Technologies has also developed a 4,500-metre rated titanium SeaPilot DVL for deep-water deployments. The SeaPilot DVL provides a slightly smaller footprint when compared to other products in the market and also provides the industry's newest electronics platform. A leak detection sensor is integrated into the SeaPilot DVL .The leak sensor will provide ROV pilots with real time information on the status of the structural integrity of the DVL and will allow pilots the opportunity to shut down the DVL if the structural integrity is... (read more)
2014-08-26 12:34:45

Underwater Navigation Training

Teledyne RD Instruments (USA) will host a two-day training seminar focused on their Doppler Velocity Log (DVL) technology. This training will be hosted in Houston, USA, on 21 and 22 October 2014. DVLs are used extensively onboard underwater platforms and surface vessels to provide precision navigation capability. All current and potential DVL users are encouraged to attend this event to expand their working knowledge of their DVL and its application to their underwater platform.  (read more)
2014-08-19 03:24:55

Doppler Velocity Log Training

Teledyne RD Instruments (TRDI, USA) will host a 2-day training seminar focused on their Doppler Velocity Log (DVL) technology. DVLs are used extensively onboard underwater platforms and surface vessels to provide precision navigation capability. This training will be hosted in Houston, TX, USA on 18 and 19 April 2013. Attendees can sign up to attend one or both days of training. The first day is dedicated to basic DVL principals; 19 April is an advanced theory and application course. See the full details and online registration. All current and potential DVL users are encouraged to attend this event to quickly... (read more)
2013-03-08 09:33:48

Sonardyne Launches ‘Syrinx’ Doppler Velocity Log

Sonardyne International, UK, is introducing its first-ever Doppler Velocity Log, called Syrinx. Developed to meet the needs of surface and subsea vehicles that require high-integrity, high-performance navigation aiding over a wide range of water depths and seabed types, the new Syrinx DVL is making its worldwide debut at the Ocean Business exhibition in Southampton (14-16 April 2015). The introduction of Syrinx is a natural extension of the company’s existing 6G and SPRINT product lines and follows a major investment in research and engineering aimed at creating the industry’s best performing 600kHz DVL. The Syrinx DVL employs full linear signal processing... (read more)
2015-04-13 09:37:37

Underwater Navigation Training in Europe

Teledyne RD Instruments (TRDI, USA) is to host a two-day training seminar focused on the Doppler Velocity Log (DVL) technology. DVLs are used extensively onboard underwater platforms and surface vessels to provide precision navigation capability. All current and potential DVL users are encouraged to attend this event to expand their working knowledge of their DVL and its application to their underwater platform. This training will be hosted in Antibes, France, on 19 and 20 June 2014. Full details and online registration are available from Teledyne RDI’s website. (read more)
2014-04-28 10:33:27

Optimizing the Choice of DVLs for Noisy Environments

Reliable navigation and positioning underpin productive use of submerged vehicles, leading to optimized operations, expanded capabilities, and greater cost-effectiveness. For 25 years, Teledyne RDI Doppler Velocity Logs (DVLs) have been an industry-leading solution for this need. DVLs are sonar systems that accurately measure a vehicle’s speed over ground and altitude above the seabed. The high precision and fast update rates of Teledyne RDI’s data have enhanced subsea operations, from high-resolution spatial surveys to low-altitude stationkeeping. Moreover, Teledyne RDI DVLs have delivered robust navigation over highly demanding terrain, such as rugged hydrothermal vent fields on mid-ocean ridges. Field Trials To operate... (read more)
2019-10-03 11:27:57

Nortek Supplies New-generation Navigation System to Unique Group

Unique Group, a leading integrated subsea and offshore solution provider, has added the latest Nortek Doppler Velocity Log (DVL) 1000 to its global inventory, bringing the latest in navigation and positioning systems to clients. The DVL is an essential tool across a wide range of subsea operations where the quality and accuracy of data is key. “Nortek instruments have repeatedly proven to be exceptionally reliable and popular with our clients and we expect there to be significant demand for this new innovation,” says Alan Cameron, general manager of Unique System UK, about the new equipment. “Frequently used for ROV and... (read more)
2018-03-21 04:35:14

Record Number Users ADCPs in Action Industry Event

Teledyne RD Instruments (CA, USA) hosted its 6th ADCPs in Action Users' Conference in San Diego, California. Over 170 Teledyne RDI Acoustic Doppler Current Profiler (ADCP) and Doppler Velocity Log (DVL) users converged on Mission Bay to share information and learn from each other during this 3-day industry event. This year's event highlights included; - keynote speaker Mr. Steve Blanchard, Chief of the U.S. Geological Survey's Office of Surface Water - over 50 industry experts presenting their ADCP/DVL field work and data; - a full-day of Teledyne RDI product/software training - a DVL integration workshop; new product introductions; poster papers; -... (read more)
2007-11-29 10:03:21

Sonardyne Navigation for Thai AUV Programme

Marine robotics technology supplied by Sonardyne Asia Pte. Ltd, of Singapore has been selected to help navigate an autonomous underwater vehicle (AUV) being developed by a joint research programme between PTT Exploration and Production Public Company Limited (PTTEP) and Kasetsart University (KU), Bangkok, Thailand. The order for a SPRINT inertial navigation system (INS) and Syrinx doppler velocity log (DVL) was placed by the PTTEP-KU and will be integrated on a 4,000m-rated, long-endurance AUV being built for applications including pipeline maintenance and oil-spill detection. With a track record spanning 10 years, Sonardyne’s SPRINT technology makes use of aiding from data sources... (read more)
2017-05-16 01:35:27
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