Optimizing a Low-cost Multi Sensor System for Hydrographic Depth Determination

Surveying devices with lower costs are being welcomed by hobbyists eager to determine water depth. The Department of Geodesy and Geomatics at HafenCity University (HCU) in Hamburg has been working on cost-efficient solutions in recent years. With shallow water surveys not required to be performed with the accuracy and precision of industrial projects, surveying devices with lower costs are being welcomed by hobbyists eager to determine water depth. With this low-cost demand rising, the investigative development of these products has become a scientific research issue. The Department of Geodesy and Geomatics at HafenCity University (HCU) in Hamburg has been working on cost-efficient solutions in recent years.  The Old Openseamap Project During a project with openseamap.org, a Multi Sensor System (MSS) including an Echo sounder, GPS and inertial measurement unit (IMU) was built up and tested. Despite... (read more)
2019-04-08 01:44:05

A18D in Business for AUV Survey Services

ECA Group demonstrates the high-performance of its mid-size AUV during deep survey missions
As announced in early 2018, ECA Group signed a cooperation agreement for subsea robotic services to Oil & Gas companies with a leasing offer on its latest generation A18D AUV creating a new dimension for its AUV services activity. Throughout 2018, ECA Group conducted several successful deep survey missions. The next generation AUV demonstrated its capabilities to perform multi-sensor surveys during deep sea operations (around 2,500m water depth) in the Mediterranean Sea.   A Comprehensive Survey Solution The A18D is the most compact multi-sensor AUV on the market for long-endurance deep water surveys (up to 3,000m). The AUV can capture... (read more)
2019-04-05 01:31:24

AutoNaut Launches Communication Hub at Ocean Business 2019

AutoNaut is to launch its 3.5 Comms Hub product at Ocean Business 2019, taking place at the National Oceanography Centre, Southampton, UK, 9-11 April 2019. The 3.5m Comms Hub is specifically designed for deployment as a long-duration surface gateway. Flexibility in sensor fit enables tasks including data harvesting, precision positioning and communications from and to a subsea asset. Onward relay can be via satellite for over-the-horizon missions. Payload versatility means that secondary sensors can also be fitted. Robust and compact design AutoNaut’s near-silent sound profile – the wave-foil technology involves just a few moving parts - reduces noise interference to almost... (read more)
2019-04-04 09:16:21

The Study of Mapping the Seafloor

What is the Difference Between a Bathymetry Chart and a Hydrographic Chart?
This article will immerse you into the deep water of Bathymetry. It explains in detail what a bathymetry map is, what it shows, what methods we use to collect the bathymetry data and last but not least, how to create a good quality bathymetry map. It will also cover the difference between a bathymetry chart and a hydrographic chart and the techniques our ancestors used in the past to collect and record depths? What is Bathymetry? Bathymetry is the study of mapping the seafloor. Bathymetric maps represent the ocean (sea) depth as a function of geographical coordinates, just as topographic maps... (read more)
2019-01-15 08:58:54

Valeport Sensors Selected for New Micro AUV

Valeport has recently collaborated with ecoSUB who produce a micro AUV that is both advanced and cost-effective. The small and robust sensors are assisting Autonomous Underwater Vehicle (AUV) manufacturers and users to not only get the data they require, but to make AUVs more accessible in the marine environment. ecoSUB is a micro AUV (0.5 metres long) that uses Valeport’s sensors to autonomously acquire sound velocity profiles and has been jointly developed by Planet Ocean and Marine Autonomous Robotics Systems (MARS) group at the National Oceanography Centre (NOC) in Southampton. Part funded by Innovate UK and the UK Defence Science... (read more)
2018-12-17 09:16:40

Hydrographic Surveying: Where Do We Stand

The Ever-increasing Accuracy of Mapping the Surface Waters
Hydrographic surveying is highly specific and requires a suite of advanced acquisition and positioning sensors attached to a mobile survey platform as well as sophisticated software to allow the correct combination of all the data. For those within the industry, the advances over the last decade may feel more like an evolution rather than a revolution. If we look back one, two or even three decades, we can see the enormous leap hydrographic surveying has taken. Where do we stand, and what can we expect for the near future? In this article, we will look at the present compared to... (read more)
2018-12-11 02:51:31

Collaborating to Make ROVs Small and User-friendly

Putting together a highly specified remotely operated underwater vehicle (ROV) is a complex business, requiring fluid integration of components and software from several different manufacturers. Getting it all to work together takes a high level of collaboration between professionals, located around the world. When VideoRay was designing a subsea vehicle so compact it could be checked in as luggage at the airport, it teamed up with Nortek to keep the size down, while keeping the positioning accuracy high. A case in point is the deployment of Nortek’s DVL1000 Doppler Velocity Log on the Defender models now being produced by Pennsylvania-based... (read more)
2018-10-23 09:44:24

The Making of RV 'Kronprins Haakon'

New Norwegian Ice-breaking Research Vessel
Norway is a maritime country with a very long coastline, plus it is very much a polar nation with 80% of its sea territory and 45% of its land mass north of the Arctic circle. It is the only country with territorial claims both in the Arctic and the Antarctic. In spite of this, Norway has not had a purpose-built polar research vessel since Roald Amundsen’s 'Maud' (1917), having instead relied on converted commercial vessels for such purposes. That has all changed, however, now that 'Kronprins Haakon' has come into service. This article provides insight into the making of this new multi-purpose research vessel.... (read more)
2018-04-17 10:51:23

Hemisphere GNSS Presents Atlas-capable Vector V1000 for Precise Marine Applications

Hemisphere GNSS has introduced the all-new Vector V1000 GNSS receiver, which provides high-accuracy heading, position, pitch, roll and heave data. The V1000 supports multi-frequency GPS, GLONASS, BeiDou, Galileo, QZSS and IRNSS (with future firmware upgrade and activation) for simultaneous satellite tracking. The V1000 is powered by Hemisphere’s innovative and industry-leading Athena RTK engine and is Atlas L-band capable. The new V1000 is designed for professional marine applications, such as hydrographic and bathymetric surveys, dredging, oil platform positioning, buoys and other applications that demand the highest-level 3D positioning accuracies. Based on Hemisphere’s Eclipse Vector technology, the V1000 uses the most accurate... (read more)
2018-03-27 09:10:24

SBG Releases Navsight Marine Solution

At this year’s Oceanology International in London, UK, SBG Systems released the Navsight Marine Solution, a full high-performance inertial navigation solution designed to make surveyors’ tasks easier in both shallow and deep water. Navsight Marine Solution integrates the latest generation of gyroscopes, accelerometers and GNSS receivers. Navsight provides high-performance motion and navigation data as well as a real-time heave accurate to 5cm. To allow surveying when wave frequencies are large or complex, the solution comes with a delayed heave feature. If higher performance is required, the surveyor can count on Qinertia, SBG’s INS/GNSS post-processing software. New calibration procedure for easy installation... (read more)
2018-03-20 11:25:57
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