Safe Navigation with Uncertain Hydrographic Data

The Representation of Data Quality in the IHO S-101 Data Model
Despite the best efforts of Hydrographic Offices (HOs) around the world, the ENCs that are on the market today do not always depict the real world as accurately as would be desired. This situation arises because gathering detailed hydrographic data is slow and consequently, ENCs (and paper charts) are compiled from multiple data sources, some modern and comprehensive, some old (even ancient) and others from all stages in between. When the IHO developed the S-57 standard this situation was recognised and the quality of survey data used to compile ENCs had to be encoded within a composite data quality indicator... (read more)
2012-06-06 03:40:19

Free Data onto the Web

Base data used in the development of marine mapping products are generally not made freely available and are normally at a price that is decided on by their owner. The Irish government has taken the decision to allow free access to all of its digital marine raw data. This poses the problem of how to best achieve this, given the large sizes of these individual units of data. This article lists the objectives of the Irish marine mapping programme and outlines the system devised to meet these objectives via web data distribution.<P>   The Integrated Mapping for the Sustainable Development... (read more)
2008-05-15 12:00:00

OceanWise Releases Innovative Global Raster Chart Dataset

OceanWise, the leading UK-based supplier of Intelligent Marine and Coastal Mapping Data is pleased to announce the release of its Global Raster Chart dataset of the world's oceans: ‘Raster Chart XL Oceans’. RCXL Oceans is a new fast service that is widely accessible using most GIS software. It is perfect for those practitioners and decision makers looking to add a familiar authoritative mapping source to their business proposals, GIS projects and Web Mapping Applications. OceanWise operations manager Caroline Levey commented: “We are really proud to be launching this extension to our mapping range and firmly believe that Raster Charts XL... (read more)
2020-05-28 01:31:10

First NOAA Chart Adequacy Workshop

The key objective of the NOAA Chart Adequacy Workshop was to demonstrate techniques to evaluate the suitability of nautical chart products using chart quality information and publicly-available information. The three-day workshop was held in Silver Spring, Maryland, USA, from 14 to 16 July 2015. The attendees were cartographers, hydrographers and potential chart producers from hydrographic offices and government agencies around the world. The nations of the participants in the workshop included: Indonesia, Israel, Japan, Kenya, Malaysia, Philippines, South Korea, Sri Lanka, United Kingdom, United States and Venezuela. The workshop began with a general overview of chart adequacy procedures, emphasising that... (read more)
2015-08-27 02:50:08

Crowdsourced Bathymetry

From Concept to Practice
There is definite appeal to the concept of crowdsourced bathymetric data. But from where I sit as a National Hydrographer and nautical chart producer, the issues around using crowdsourced data are complex. Data quality, data processing and liability are at the top of this list. Looking into the future, we need to take a measured approach to accepting third party data for use in nautical charting to help fill in the blanks. Crowdsourcing seems to be a great solution to the problem of nearly every national hydrographic office: too much water and not enough mapping resources to survey comprehensively. Maxim... (read more)
2013-12-03 04:43:48

Fugro Leads Marine Industry in Support of Global 'Seabed 2030' Initiative

Fugro is leading the marine survey industry in support of NF-GEBCO Seabed 2030, a global initiative to produce a definitive, high-resolution bathymetric map of the entire world’s ocean floor by the year 2030. The initiative is being facilitated by the General Bathymetric Chart of the Oceans (GEBCO) project in partnership with The Nippon Foundation (NF) as a means to inform global policy, improve sustainable use and advance scientific research. Much less than 20 percent of the world’s oceans are mapped using modern survey techniques and Fugro recognises the importance of accurate seabed measurements (bathymetry) to numerous government, scientific and industry... (read more)
2018-02-27 01:25:17

Marine Spatial Data Infrastructure (MSDI)

The Hydrographic Office (HO) is an important part of the National Geo-Spatial Data Infrastructure and, of course, the International Hydrographic Organization (IHO) has an important role to play in co-ordinating the requirements and demands for data collection, interoperability, dissemination, access, standards, security, pricing policy and possible funding models. It has been recognised at both national and international level that data and information collected for the production of navigational charts and the support of safety of navigation are also important to many other aspects of the science and management of the ocean and marine environment. In a demanding, globalised and constantly... (read more)
2007-03-02 12:00:00

The IMO e-Navigation Concept and the IHO S-100 Data Standard

e-Navigation is a concept being developed under the auspices of the UN’s International Maritime Organization (IMO) to bring about increased safety and security in commercial shipping through better organisation of data on ships and onshore, and better data exchange and communication between the two. The IHO is involved in the development of the e-Navigation concept to ensure that any underpinning hydrographic standards, products or services are in place from the beginning.   A significant challenge for e-Navigation is how to efficiently capture and subsequently transfer the many forms of non-hydrographic data and information in the e-navigation domain in a relatively... (read more)
2011-05-20 03:39:23

'As it Is'

By the Senior Hydrographer and Tidal Analyst of the United Arab Emirates
The Military Survey Department of the Armed Forces is the sole federal mapping agency and entity in the United Arab Emirates (UAE). It is responsible for co-ordinating, processing and disseminating up-to-date topographic, aeronautical and nautical information for various applications over the whole UAE territory. The Military Survey Department (MSD) was initially established in 1974 to serve the different military departments in their geospatial data activities and applications. However, it gradually assumed the role of the mapping agency and entity for the country, i.e. the only authority in the UAE producing and publishing maps for the whole UAE territory. In this... (read more)
2008-01-01 01:00:00

Hydrographic Information Databases

The availability of various sensors and sophisticated technology providing digital data means that today’s hydrographers must attune to the idea that the final products should be available in a hydrographic database. This will facilitate accessing marine data in hydrographic information systems. Almost all institutions of higher learning that specialise in geomatics-engineering now tend to provide education in marine geographic information systems (GIS) and this is already reflected in the syllabus in M8 of the IHO Standards of Competence for Nautical Cartographers. A database is a collection of interrelated data that can be accessed in various logical orders but is stored... (read more)
2007-07-13 12:00:00
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