HSA Systems - News Archive

Deep Water Basin , Milford Sound – new Hydrographic Survey

Environment Southland recently contracted HSA Systems to provide a hydrographic survey of Deep Water Basin , Milford Sound. HSA, in conjunction with Discovery Marine Limited (DML), undertook the survey with the view to gathering accurate bathymetric data to enable a Zone of Confidence (ZOC) assessment to be undertaken and to identify any areas of shoaling. The survey was undertaken from 22-24 November 2004.

The survey area primarily consisted of Deep Water Basin, including the Arthur River. Particular emphasis was placed on the approach channel and the delineation of the extent of the shoal area protruding out from the mouth of the Cleddau River as depicted on the 1:15,000 insert of Chart NZ7622. The positions of all beacons were also confirmed.

An initial review of the survey data has indicates the edge of the tongue of debris extending out from the mouth of the Cleddau River would appear to have migrated into Deep water Basin by 30-40m.

Deep Water Basin, 3D view from SW. Deep Water Basin, depths, 2.5 metre contour interval.

In view of the recent Land Information New Zealand (LINZ) initiatives in assessing all New Zealand surveys for ZOC classification, this survey has been completed to ZOC B standards in accordance with International Hydrographic Organisation (IHO) guidelines. The survey will assist Environment Southland with its risk management planning for the area.

For more information contact: Kevin Smith, Operations Manager, ksmith@hsa.co.nz

New head of Spatial Business Group

Effective 1 October, 2004 Phil O’Neil was appointed Manager of the HSA Systems Spatial Business Group. Phil has been actively involved with the Group since its inception and is well equipped to manage this highly specialised and expanding business unit.

Phil is a ten year resident of Wollongong. He is keen on sports of all sorts which is reflected in his management style of leading from the front and team building. Phil and wife Megan have a family of three who resolve his family/work priorities for him.

A recent picture of Phil (hairless), and the team after the
HSA team won the local indoor soccer challenge.

On October 5th and 6th 2004, Mr. Ern Payne of SGS conducted a surveillance audit of HSA’s Wollongong and North Sydney facilities.

HSA successfully passed the audit which didn't identify any non-conformities.

HSA’s Quality Manager, Agapi Tsampazi, highlighted two of the strengths of HSA Systems quality system specifically identified by Mr. Payne during the audit:

The next audit will be HSA’s third Triennial audit, which is scheduled for October 2005.

ENC Cartographer - soon to join the suite of ENC Tools.

HSA's S-57 ENC to INT1 paper chart conversion software.

Zones of Confidence Assessing New Zealand ’s Hydrographic Surveys

HSA Systems has recently been awarded a contract to provide Zone of Confidence (ZOC) assessments for all of the hydrographic surveys used in the compilation of New Zealand ’s nautical charts from Land Information New Zealand (LINZ). The 18 month contract will include hydrographic survey personnel from Discovery Marine Limited who will undertake a review of 134 nautical charts and approximately 2,000 hydrographic surveys.

Zones of Confidence (ZOC) are quality values applied to hydrographic survey data. Each hydrographic survey used in the production of a nautical chart will be assessed and assigned a value from A to D with a further provision for Un-assessed data. The assessment will take into account positional accuracy, depth accuracy, sea floor coverage and the typical survey characteristics for each survey. The ZOC assessment process is based upon the International Hydrographic Organisations (IHO) S57 CATZOC criteria.

When complete the project will be the first in the world to assign ZOC values to all of its hydrographic surveys used on nautical charts. New Zealand is one of the few countries in the world to provide mariners with depth data quality indicators on all of its charts.

For more information contact: Kevin Smith , Operations Manager. ksmith@hsa.co.nz

HSA Produces Great Barrier Reef Marine Park Raster Zoning Charts - GBRMP RZC for the Great Barrier Reef Marine Park Authority - GBRMPA.

HSA Systems, on behalf of the Great Barrier Reef Marine Park Authority - GBRMPA, has produced a digital series of the authorities Marine Park Zoning Maps. This series of maps is called the Great Barrier Reef Marine Park Raster Zoning Charts or GBRMP RZC.

The Commonwealth Government of Australia, through the GBRMPA, has implemented a new protection regime for the Great Barrier Reef through the Representative Areas Program which is effective from July 1, 2004.

The advantage of the digital chart product is the ability for the mariner to monitor their vessels position and progress accurately and in real time when used in conjunction with an Electronic Chart System (ECS) and Global Positioning System (GPS). This enables the user to confidently be aware of their location in relation to the Marine Park Zone boundaries and avoid encroaching into restricted areas.

HSA Systems releases version 5.3 of its popular Endeavour^® navigation software.

Version 5.3 has over 20 major and minor enhancements including the eagerly awaited USB dongle option.

Enhancements made to this new version include: AIS capabilities updated to the new NMEA 0183 standard (version 3.01); additional enhancements to handle data in the S-63 encryption format; the list of data types that Endeavour^® handles continues to grow, with the recent release of the Western Australia Raster Nautical Charts (WARNC) and Great Barrier Reef Marine Park Raster Zoning Charts (GBRMP RZC).

ENC Analyzer modified to address the IHO Recommended ENC Validation Checks, Standard S-58.

ENC Analyzer 2.1.5 has been built with reference to the new IHO Recommended ENC Validation Checks Standard S-58, Edition 2.0. The IHO special publication 58 (S-58) had been written to replace the Annex C to Appendix B.1 of the S-57 Edition 3.1, Recommended ENC Validation Checks.

The IHO Recommended ENC Validation Checks Standard S-58 "specifies the checks that, at a minimum, producers of ENC validation tools should include in their validation software." The S-58 standard has been developed for the IHO with input from a number of hydrographic offices and software companies.

Aligning ENC Analyzer's checks with the S-58 standard meant that substantial changes where made to modify existing rules to match the standard and provide a cross reference to both the appropriate S-57 ENC address and the corresponding S-58 rule. ENC Analyzer is not only an ENC QC tool but reinforces the ENC standard by allowing the user to investigate encoding rules from the relevant IHO documents.

HSA Systems also took the opportunity to further improve ENC Analyzer by modifying checks to increase checking speeds and add enhancements identified in previous versions by our wide cross section of users.

News and media releases from HSA
2003

NZ Maritime School Purchases HSA's Endeavour® Navigator

HSA Systems Ltd has recently supplied eighteen licenses of Endeavour Navigator to the New Zealand Maritime School in Auckland. The school has recently put together an IMO, MSA approved, five day short course in ECDIS/AIS. Topics covered during the course include principal types of systems, electronic data, route planning, route monitoring and chart updating.

Endeavour will be used to allow students to undertake course work and case studies based upon actual marine incidents. Mariners interested in attending the course should contact reception at the New Zealand Maritime School in Auckland, tel 09-379-4997, fax 09-379-4999, web: www.maritime.ac.nz

HSA Systems Limited is the Platinum Sponsor of the Australasian Hydrographic Symposium

Australasian Hydrographic Symposium

We are proud to be the Platinum Sponsors for the upcoming Australasian Hydrographic Symposium to be held in Christchurch, New Zealand in November 2003. For further details on the conference go to:

The Western Australian paper chart series now available in digital format.

The Western Australian Raster Nautical Chart series has been produced in cooperation with HSA Systems Pty Ltd and the Western Australian Department for Planning and Infrastructure. This digital product is reproduction of the Department for Planning and Infrastructure's published paper chart series.

The advantage of the digital product is the ability for the mariner to monitor their vessels position and progress in real time when used in conjunction with an Electronic Chart System (ECS) and Global Positioning System (GPS).

HSA Systems Announces the release of ENC Analyzer 2.1.4

ENC Analyzer - The ENC Validation Tool.

This release of ENC Analyzer incorporates new functionality and 17 modifications or enhancements to existing checking functions.

The most obvious change to this software is that the log file has been changed to an XML format. ENC Analyzer log messages are now displayed in colour and in an expand/collapse tree structure in both the ENC Analyzer and ENC Designer. This enhancement makes navigation though the log file much easier than in previous versions.

HSA Systems hosts Australasian Hydro Society in North Sydney

Tuesday 19 August, HSA Systems (North Sydney office), hosted the Eastern Australian Region meeting of the Hydrographic Society.

The meeting was very well attended and included the current and two retired Hydrographers.

It was a great opportunity for HSA staff to meet with the local members and of course HSA is a member of the Society.

After the meeting there was a live demonstration of the Queensland REEFREP system highlighting HSA’s VTM technology. The system was on live feed from Hay Point and was projected onto a large screen. There was real time audio of Hay Point talking directly to the vessel crew whilst being able to watch that vessel (and many others including RAN vessels), tracking through the reef.

New web site for HSA Systems

Welcome to the new HSA Systems web site. It contains all of the information of the old site and more.

One of the aims of the new site is to reduce the amount of clutter and let you find what you need to know. You will find that each page will contain a brief overview and where necessary more detailed downloads will be included. These downloads can be read on the screen, saved to your machine or printed.

We have gathered together a page of links you may find useful and included some samples of our software and spatial services in action.

No doubt if you have got this far you will have a reasonable idea how the site is laid out, please feel free to explore some more.

HSA Systems Announces the release of ENC Analyzer 2.1.3

ENC Analyzer - The ENC Validation Tool.

ENC Analyzer is the result of 20 years combined experience with ENC's. SevenCs AG & Co. KG of Hamburg and HSA Systems of Sydney, have a long and successful history in the production of ENC's, the development of ENC production and QA software and Electronic Chart Display Information Systems (ECDIS).

SevenCs AG & Co. KG and HSA have shown a strong commitment to the international hydrographic community with both companies being actively involved in international working groups and committees associated with the development of the S-57 standard.

During the 1990's the two companies independently developed ENC Quality Assurance tools; DXaminer (HSA) and Analyzer (SevenC's). Both these products were widely used in the ENC production community.

In 1999 SevenCs and HSA joined forces through the ENCore Project to rationalise their independent ENC QA tools into a single product. The result, ENC Analyzer, was a comprehensive QA tool that went beyond the combined capabilities of either of the previous products due to enhanced functionality and the addition of many new checks.

A large proportion of the development effort involved testing ENC data sets from many different Hydrographic Authorities and ENC producers. This testing exposed the product to a wide variety of scales and encoding practices especially at the geometry level.

Inspecting ENC data sets as they are made available by producers around the world is ongoing. This practice guarantees an extremely well tested product across a wide range of ENC products.

The use of ENC Analyzer has been growing rapidly and the product has found a place in many Hydrographic Offices and commercial ENC production houses around the world. The expanding use of ENC Analyzer has generated important customer feedback that has fuelled continuous refinement and enhancements to the underlying checks. These refinements have been reflected in the latest release - ENC Analyzer 2.1.3.

Currently ENC Analyzer is being used by more than 20 Hydrographic Offices and commercial enterprises, including:

Hydrographic Office, Australia (AHS)

Hydrographic Office, Hong Kong

Hydrographic Office, Taiwan

Hydrographic Office, Estonia

Hydrographic Office, Portugal

Hydrographic Office, United Kingdom (UKHO)

Hydrographic Office, Italy

Hydrographic Office, Turkey

Hydrographic Office, France (EPSHOM)

Ryerson University, Canada

Hydrographic Office, Peru

Hydrographic Office, Canada

Swedish Maritime Authority

Amt für Militärisches Geow., Germany

Tenix, Australia

MapTech, USA

QPS Netherlands

Softnet Singapore

STN Atlas

Terra Corporation, Japan

University of Mississippi, USA

HSA Systems moves house

We have moved down the hill and are now located on the 1st floor of 121 Walker Street, North Sydney.

The building where we had been since the mid 1990s in Berry Street, North Sydney, is now a hole in the ground and will slowly be turned into a multi story apartment block. Don't believe the sign!

News and media releases from HSA
2002

HSA Systems Announces Version 5 of Endeavour� Navigator with NZMariner Support

HSA Systems Ltd (formerly Hydrolink Limited) has announced the release of the new version of the popular Endeavour ECS product range. The new Version 5 range consists of two products; Endeavour Navigator and Endeavour ECDIS. All products support the newly released NZMariner raster chart series and HSA is offering a bundled package of Endeavour with NZMariner, starting from $NZ499.00 (including GST) for Endeavour Navigator.

Improvements in the new versions cover features such as route creation, editing and tracking, a redesigned interface and a larger range of sensors available across all three products. Also, raster chart data (NZMariner, Seafarer, ARCS, Maptech, BSB) and S57 ENC chart data can be loaded and displayed in all three products.

According to Brian O�Neil, Managing Director of HSA, �We are pleased with the Endeavour Navigator Version 5 as it incorporates a number of enhancements requested by our clients, in particular, the user interface. We held back the release of Navigator to coordinate it with the release of NZMariner and this allowed us to add extra features and perform additional beta testing.�

The Endeavour Navigator range has a product suitable for all maritime navigation needs; Endeavour Navigator is for the recreational sailor, commercial vessels and Endeavour ECDIS if a Type Approved navigation system is required.

Figure 1: Brian O�Neil, Managing Director of HSA, with the first copy of Endeavour Navigator V5.

Figure 2: The new user interface of Endeavour Navigator V5 displaying part of the NZMariner chart of Auckland Harbour.

To find out more about Endeavour view our Endeavour page.

To purchase Endeavour contact us directly or contact one of our resellers.

LINZ have released the raster chart folio for New Zealand. The chart folio is comprised of approximately 145 charts of New Zealand and adjacent waters. NZ Mariner is comprised of a Chart CD-ROM and is offered with an optional 12 month Update subscription service. The subscription service consists of an Update CD-ROM sent out to the mariner every 4 weeks for 12 months from the date subscription the subscription was taken up.

To purchase NZ Mariner either visit our e-commerce site at www.charts.co.nz or contact us directly.

HSA Systems Limited is the Platinum Sponsor of the Australasian Hydrographic Symposium

We are proud to be the Platinum Sponsors for the upcoming Australasian Hydrographic Symposium to be held in Christchurch, New Zealand in 2003. For further details on the conference go to:

New Name, New Look

HSA (formerly Hydrolink) has some exciting news ...

We have a new image for our company. The first thing you will notice is our new logo is a fresh, new, simple design and we are very proud to present it in conjunction with our new name we are now..

HSA Systems Ltd We have the same company number, only the name has changed. Our mailing address has not changed: 16 Nicolaus Street, Trentham, Upper Hutt, New Zealand. Our phone and fax contacts are still the same, too.

Our new look will extend to our web site, which is being completely redesigned and enhanced. Our email and web address details will remain until mid October 02. From then on we plan to have our new email addresses and web address.

Maps now for sale online from Hydrolink

Hydrographic company Hydrolink Limited has expanded their online Map and Chart Shop to sell maps of New Zealand and the Pacific.

The online shop, at www.charts.co.nz, now offers the full range of topographical maps from Land Information New Zealand, as well as other maps of New Zealand, offshore islands and the Pacific.

�The Map and Chart Shop provides tourists, hikers, trampers, mountain bikers and anyone else needing maps of New Zealand with a quick, easy and convenient way to buy these,� says Hydrolink�s Operations Manager, Kevin Smith.

Secure online credit card ordering is a feature of the shop. It really is the easiest way possible to buy maps of New Zealand.

The Map and Chart Shop also sells New Zealand hydrographic charts and other official hydrographic publications.

News and media releases from HSA
2001

Electronic navigation tool from Hydrolink helps chart Cook's voyage

When Captain James Cook sailed around the coastline of New Zealand in 1769, he navigated his way using a compass and sextant.

Cook's journey of discovery was recently retraced for the TV series Captain's Log. The show's presenter, Peter Elliott, sailed around New Zealand on twenty different boats, exploring the coastline and revealing the events that have shaped NZ's maritime heritage.

Tools for navigation have changed enormously since the days of Cook, and for Captain's Log Elliott's series of voyages were plotted and displayed on screen using cutting-edge technology � the electronic marine navigation software Endeavour, provided by Hydrolink.

The Endeavour software integrates a vessel's sensor equipment with electronic charts. It brings together electronic charts, GPS, autopilot and other sensors and provides complete voyage planning and vessel-monitoring functions. It also allows voyage replay from the saved log files of sensor input.

Following in Cook's footsteps... some scenes from Captain's Log

The software was used as a base for the graphics displaying the routes followed by Elliott around New Zealand.

Hydrolink installed the software on the computers of production company Livingstone Productions, along with Land Information New Zealand's hydrographic raster charts, and provided training for the users.

'Endeavour is an extraordinary tool for marine navigation,' says Hydrolink's Operations Manager, Kevin Smith. 'We were thrilled to work with the producers of Captain's Log, retracing the travels of Cook and examining important events in New Zealand marine history � and looking at the ways in which navigation technology has changed so hugely over the years.'

Hydrolink has revamped both its websites. The Hydrolink website at www.hydrolink.co.nz now features a clean new look and easier navigation, while the e-commerce Chart Shop selling hydrographic charts and publications online has not only been redesigned but also includes thumbnails of the charts available. Hydrolink's Chart Shop is at www.charts.co.nz.

Milburn cements relationship with Hydrolink

Milburn New Zealand Ltd has contracted Hydrolink for the supply of electronic navigation software, digital chart data and survey data conversion tools.

Milburn has two specialised bulk cement carrying vessels, which are required to navigate around the New Zealand coast and in particular the bar harbour entrances of Westport and Onehunga. The bar entrance at Westport in particular is ever changing due to the littoral drift of sand along the South Island West Coast and so requires regular dredging. This means a constantly changing bar requiring regular surveying.
Milburn is committed to increasing safety and efficiency as well as reducing environmental risks in transiting these routes � especially the entrances to the ports.

This commitment has been demonstrated by introducing the system, implemented by Hydrolink.

Milburn cement carrier at Westport

The Westport harbour entrance

The system involves:

A data translator, which converts the latest survey information (in DXF format) into an exchange format able to be read by the navigation systems on board the vessels.

On board navigation systems or Electronic Chart Systems (ECS) able to read the survey data and display this information as a graphic overlay on official electronic charts.

Electronic charts for the areas of concern and for use with the on board navigation system.

Endeavour - transiting Westport bar

Westport bar survey

The survey data is collected and converted using the translator. This converted information is then e-mailed to a vessel in transit. The on board ECS is able to import and display the information. Typically the displayed information contains depth soundings and depth contours, which gives the vessel master an accurate and up-to-date model of the ocean bottom.

Endeavour is an Electronic Chart System (ECS) developed by Hydrolink's parent company Hydrographic Sciences Australia. The product has been widely available for several years and is extensively used by the Australian Defence Forces, government, professional and recreational mariners. Version 5 is currently under ECDIS Type Approval by DNV of Norway.

Both the raster (HCRF) and vector (S57) data used by Endeavour were produced by Hydrolink and HSA to International Hydrographic Organisations (IHO) specifications under authority from Land Information New Zealand (LINZ).

Read more about Endeavour marine navigation software.

Hydrolink wins 3 year distribution contract

Hydrolink has been awarded a 3 year contract for the storage, correction and distribution of New Zealand's hydrographic charts and topographic maps by Land Information New Zealand (LINZ).

The Hydrolink Map & Chart Centre is housed within a new 2000 square metre facility established by Hydrolink in Upper Hutt. Anne Amer has been appointed Manager of the new facility. The Map & Chart Centre became operational 6 weeks after the signing of the contract. At the opening function, Brian O'Neil, Hydrolink's Managing Director, said: �The new facility is a credit to the Hydrolink team and will be used as the national base for Hydrolink's expansion program. This will include printed and digital document management storage and services plus development of the Geospatial and IT groups."

Hydrolink is an accredited provider of hydrographic services to Land Information New Zealand (LINZ). A range of hydrographic services is provided to the New Zealand Government including the production of hydrographic charts and surveys.

Hydrolink is a subsidiary of Hydrographic Sciences Australia (HSA). HSA have been providing specialist hydrographic charting and navigation products to the Royal Australian Navy and the maritime public in general for several years.

Hydrolink sells topo maps

Hydrolink is now a Land Information (LINZ) approved topographic map retailer. The full range of New Zealand's 1:50,000 topographic maps are available for sale from Hydrolink's Map & Chart Centre.

Hydrolink produces more charts

Hydrolink has once again been successful in winning a hydrographic charting contract from Land Information New Zealand (LINZ). LINZ releases packets of hydrographic charts each year for tender by accredited hydrographic service providers. This year LINZ released a total of 16 charts for compilation and revision of which Hydrolink won 1 New Chart and 9 New Editions. All charts are for the national folio and will be completed to LINZ/IHO INT paper chart specifications. The charts will be compiled using digital techniques. Hydrolink is a subsidiary of Hydrographic Sciences Australia (HSA) who have been providing similar services to the Royal Australian Navy for some years.

LINZ is pioneering the way worldwide in the release of hydrographic services for competitive tender. The fact that Hydrolink has once again been successful demonstrates that private industry can complete such work to a high level of quality, on time and to budget. Hydrolink has consistently been awarded charting work since 1997 when the competitive environment within New Zealand was first established.

News and media releases from HSA
2000

Prices come down in updated Chart Shop

Hydrolink's online Chart Shop has been updated in line with the latest edition of NZ202, New Zealand's official Chart Catalogue.

The site� which sells the full range of official New Zealand hydrographic charts and other official hydrography publications� now features cheaper prices for all products. It also includes updated graphics and some new hydrographic charts, which will be available in July 2000.

News and media releases from HSA
1999

Website offers hydrographic charts for sale online

Hydrolink Limited has launched its online Chart Shop, a website selling hydrographic charts, at www.charts.co.nz.

The secure e-commerce site has the full range of official New Zealand hydrographic charts and other official hydrography publications available for sale.

"The Chart Shop will be extremely useful for both local and international mariners, allowing them to easily access the full range of hydrographic publications for New Zealand and the Pacific," says Hydrolink�s Operations Manager, Kevin Smith.

Seaworks searches for gold in the southern ocean

This summer Seaworks placed two vessels in the southern ocean as part of its marine management of Hydrolink�s surveying contract. One of those vessels, the Seasurveyor, was subsequently used to search for the wreck of the General Grant in the sub-Antarctic Auckland Islands.

The Seasurveyor in the Auckland Islands

The General Grant sailed from Melbourne in 1866 with 83 souls and a cargo of gold aboard. After ten days at sea the forward lookout spotted the towering cliffs that comprise the west coast of the Auckland group. The ship was soon becalmed while the swells pushed it into a cave where it finally sank. Fifteen people survived the shipwreck. They spent 18 months on the islands in terrible conditions. Five of them died before the rest were rescued by a sealing party from New Zealand.

Over the past 130 years there have been 29 attempts to recover the gold from the General Grant. Bill Day, a director of Seaworks, is a veteran of two of those expeditions. This summer he took advantage of the presence of the Seasurveyor to mount a third expedition. A team of 11 people swam 40 nautical miles of the west coast of the main Auckland Island gathering data on wreck locations. The sub-Antarctic offered up its usual hospitality of horrific weather conditions and great ocean swells. The team were only able to dive for three and a half days on the 26 day expedition. Even on those days the swells were often in excess of three metres.

Like any treasure hunter Bill is tight lipped about his search results. It is known that he has found gold and silver coins on previous trips. He has not yet claimed to have found the General Grant.

Bill intends to spend the next few months analysing the new data from this expedition before announcing his future plans.

Hydrolink carries out high-tech hydrographic survey

New Zealand hydrographic surveying is being carried out using an advanced airborne surveying method never before deployed outside the American continent. Recently established hydrographic company Hydrolink Limited has been surveying the Snares and Solander Islands using the airborne surveying method SHOALS (Scanning Hydrographic Operational Airborne Lidar Survey).

The SHOALS system � in its first application outside the American continent � is being operated from a Canadian Twin Otter aircraft, in conjunction with survey vessels which survey areas of deeper water.

Hydrolink Operations Manager Kevin Smith says that airborne surveying is extremely safe, fast and efficient.

"The Snares and Solander Islands are pretty rugged. So SHOALS is ideal for surveying the shallower areas close to shore, far safer than using a ship. It�s also much faster than traditional vessel-based surveying, and meets the International Hydrographic Organisation�s standards."

The airborne section of the survey has now been completed and the deeper water areas are being surveyed by boat.

Unlike most marine surveying methods � which use echo sounders to chart the seabed � SHOALS uses a laser which can penetrate water up to 60 metres in depth. The infrared beam from the laser is reflected off the water�s surface, while the blue-green component of the laser beam penetrates the water and reflects off the sea floor. A computer calculates the depth from the time interval between the two readings.

SHOALS is also equipped with a geo-referenced and distance-calibrated video camera which records an image of the area as it is scanned by the laser.

After the airborne collection of data is complete, the raw lidar data is loaded for processing via a high density magnetic tape into the SHOALS Data Processing System, on a SUN SPARC computer workstation.

Fugro Survey Limited is using the Fugro-owned company John E Chance and the US Army of Engineers to operate SHOALS.

Hydrolink was awarded three major contracts from Land Information New Zealand (LINZ) in 1998. The other contracts are the national contract for maintenance and distribution of New Zealand�s hydrographic charts and a contract for hydrographic chart compilation and revision.

The Snares and Solander Islands are groups of islands west and south-west of Stewart Island, and form part of the base points of NZ�s Territorial Sea and Exclusive Economic Zone (EEZ).

Read more about our hydrographic surveying services